atelNum int64 1 15.2k | title stringlengths 8 376 | authors stringlengths 3 6.6k | body stringlengths 11 5.12k | submissionDate stringlengths 19 19 | keywords stringlengths 4 185 |
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601 | Integral observes possible cyclotron line at 47 keV for 1A 0535+262 | P. Kretschmar (ESA/ESAC, Spain); I. Kreykenbohm (IAA Tuebingen/ISDC); K. Pottschmidt (CASS/UC San Diego); J. Wilms (Warwick); W. Coburn, S. Boggs (SSL/UC Berkeley); R. Staubert, A. Santangelo, E. Kendziorra (IAA Tuebingen); A. Segreto (IASF/CNR, Palermo), M. Orlandini (IASF/CNR, Roma), Lars Bildsten (KITP/UC Santa Bar... | The Be/X-ray binary 1A 0535+262 is known as the accreting X-ray pulsar with the highest observed magnetic field. Usually the field strength is quoted as approx. 1O^13 G, based on the strong cyclotron line feature at ~110 keV observed by CGRO/OSSE during a giant outburst in 1994 (Grove et al., 1995, ApJ 438, L25). Obser... | 2005-09-04 00:18:00 | optical,x-ray,gamma ray,binary,neutron star,pulsar,star,the sun,transient |
602 | Swift XRT position for XTE J1739-285 | M. A.P. Torres, D. Steeghs (CfA), R. Greimel (ING), T. Augusteijn (NOT) | Following the recent report of renewed activity in the X-ray transient XTE J1739-285 (ATEL #592, IAUC 7300 ), we have obtained a Swift TOO observation of the field covering this transient on 2005 Sept 03 05:54:51-06:12:41 UT. The X-ray Telescope (XRT) observation was obtained in Photon Counting mode recording a mean ev... | 2005-09-03 22:09:00 | optical,x-ray,binary,black hole,neutron star,star,transient |
603 | Discovery of CV ROTSE3 J214850-020622.2 | W. Rujopakarn (U. Mich.), T. A. McKay (U. Mich.) and F. Yuan (U. Mich.) on behalf of the ROTSE collaboration | Analysis of ROTSE-III sky patrol fields reveals of a probable new CV which we designate ROTSE3 J214850-020622.2. The object was first detected in unfiltered CCD images taken on September 2.32 UT using the 0.45m ROTSE-IIIb telescope at McDonald Observatory in Texas. The position of the object is (J1000) RA: 327.21052, D... | 2005-09-05 10:20:00 | optical,cataclysmic variable,transient,variables |
604 | Radio observations of XTE J1739-285 | M. P. Rupen (NRAO/GSFC), A. J. Mioduszewski, V. Dhawan (NRAO) | Very Large Array (VLA) observations of the X-ray transient XTE J1739-285 (IAUC 7300 ) during its on-going X-ray outburst (ATel #592, #602) have detected no radio source within the Swift error circle (ATel #602), and no variable source within the INTEGRAL or RXTE error circles (ATel #592; IAUC 7300 ). For the Swift erro... | 2005-09-13 04:28:00 | radio,optical,x-ray,binary,black hole,neutron star,star,transient,variables |
605 | RXTE confirms cyclotron line near 50 keV for A 0535+26 | Colleen A. Wilson (NASA/MSFC), Mark H. Finger (NSSTC) | The cyclotron feature near 50 keV in the spectrum of A 0535+26 measured with Integral (Atel #601) is visible in the count rate spectra of RXTE/HEXTE data from the current outburst. The feature is significant at the 17 sigma level in the 2.7-150 keV PCA/HEXTE energy spectrum from observations on August 28 between 13:55 ... | 2005-09-14 05:19:00 | x-ray,gamma ray,binary,neutron star,pulsar,star,transient |
606 | BRIGHTENED MIRA-LIKE VARIABLE IN M31 | Ovcharov E. (SU, Sofia), Koleva N. (SU, Sofia), Kostov A. (IA, Sofia), Valcheva A. (SU, Sofia), Stanev I. (SU, Sofia), Georgiev Ts. (IA, Sofia), Nedialkov P. (SU, Sofia) | BRIGHTENED MIRA-LIKE VARIABLE IN M31
We report that the POINT-AGAPE Survey Mira variable No. 91772 in M31, has brightened to 1.4 mag above it's previously detected maximum about 20.1 mag in R band. We discovered an unusually bright star located at R.A. = 0h42m44s.49, Decl. = +41o03'43".6 (equinox 2000.0), which is 0".... | 2005-09-15 19:02:00 | optical,star,variables |
607 | GRO J1655-40 returning to the hard state | Jeroen Homan (MIT), Jon M. Miller (U. Mich.), Rudy Wijnands (U. Amsterdam), Walter H. G. Lewin (MIT) | We have been monitoring the ongoing outburst of the black-hole X-ray transient GRO J1655-40 with more than 400 pointed RXTE observations since its start in mid February 2005 (ATel #414). During the last month the source brightness has been steadily declining while remaining relatively soft. However, in the last few day... | 2005-09-15 23:25:00 | radio,infra-red,optical,x-ray,binary,black hole,the sun,transient |
608 | Latest OIR observations of GRO J1655-40 | Michelle Buxton (Columbia Univ.) and Charles Bailyn (Yale Univ.) | We have been monitoring the black-hole X-ray transient GRO J1655-40 in optical and infrared (OIR) bands since the beginning of the current outburst (ATEL #414, #418). Observations are made daily (when possible) with the SMARTS 1.3m telescope at CTIO using the ANDICAM instrument. For approximately the last 130 days, GRO... | 2005-09-16 09:01:00 | infra-red,optical,x-ray,binary,black hole,transient |
609 | On-going radio observations of GRO J1655-40 | M. P. Rupen (NRAO/GSFC), V. Dhawan, A. J. Mioduszewski (NRAO) | We have been observing the black hole X-ray binary and microquasar GRO J1655-40 on a regular basis since the beginning of the current outburst (February 2005; ATel #414, 415, etc.). Following the report that the source was returning to the hard state (ATel #607), we made short observations on Sep. 17 UT, resulting in t... | 2005-09-19 00:26:00 | radio,infra-red,optical,x-ray,binary,black hole,transient,request for observations |
610 | Classification of SN 2005ec, a Type Ia Supernova | G. Aldering, S. Bailey, B. C. Lee, S. Loken, P. Nugent, S. Perlmutter, R. Scalzo, R. C. Thomas, L. Wang, B. A. Weaver (Lawrence Berkeley National Laboratory, Berkeley, CA), C. Bonnaud, E. Pecontal (Centre de Recherche Astronomique de Lyon), P. Antilogus, G. Garavini, S. Gilles, R. Pain (Laboratoire de Physique Nucleai... | The Nearby Supernova Factory reports that a spectrum (range 320-1000 nm) of SN2005ec (CBET #228), obtained September 21.6 UT with the Supernova Integral Field Spectrograph on the University of Hawaii 2.2-meter telescope, shows it to be a Type Ia supernova at an age of two weeks after maximum at a redshift of z = 0.03, ... | 2005-09-22 04:49:00 | supernovae |
611 | M31 Optical Transient | R. Quimby, P. Mondol, P. Hoeflich, J. C. Wheeler (University of Texas), and C. Gerardy (Imperial College) | We report the discovery of an optical transient near M31 using unfiltered CCD images taken on September 22.17 UT (about 16.3 mag) and September 23.21 (about 16.0 mag) using the 0.45m ROTSE-IIIb telescope at the McDonald Observatory. The object is located at RA = 00h38m54.63s DEC = +40o27'34.2" (J2000) and was not detec... | 2005-09-24 04:10:00 | optical,cataclysmic variable,nova,transient,variables |
612 | Renewed Radio Emission from GRO J1655-40 | Catherine Brocksopp (MSSL), Stephane Corbel (Univ. Paris & CEA Saclay), Michael Rupen (NRAO/GSFC),Bob Sault, Tasso Tzioumis (ATNF), Vivek Dhawan, Amy Mioduszewski (NRAO), Giuseppe Cimo (UTAS), Rob Fender (Southampton) | Following the return of the X-ray source of GRO J1655-40 to the low/hard state (ATel #607), we have continued to monitor the expected radio source with the Australia Telescope Compact Array (ATCA) and Very Large Array (VLA). Weak radio emission was detected on 21 Sept 2005, for the first time since May 2005. The flux w... | 2005-09-25 17:33:00 | radio,optical,x-ray,binary,black hole,transient,request for observations |
613 | Suzaku detection of cyclotron line near 50 keV for A0535+26 | H. Inoue (JAXA/Japan); H. Kunieda (Univ. Nagoya); N. White and R. Kelley (NASA/GSFC);T. Mihara and Y. Terada (RIKEN/Japan), H. Takahashi, M. Kokubun, and K. Makishima (Univ. Tokyo); and the Suzaku Team | We report on the Suzaku detection of a cyclotron resonance absorption feature from the transient binary X-ray pulsar A0535+26.
Since the middle of August, the Suzaku X-ray Observatory (launched on 2005 July 10) has made regular observations using the X-ray telescope (XRT) plus X-ray CCD camera (XIS) system sensitive o... | 2005-09-26 09:34:00 | x-ray,binary,pulsar,transient |
614 | Recent Swift Ultra-violet/Optical Observations of GRO J1655-40 | Albert K. H. Kong, Jeroen Homan, Walter H. G. Lewin (MIT) | We report Swift-UVOT observations of GRO J1655-40 during the recent hard X-ray state (ATEL #607). GRO J1655-40 was observed with Swift on 2005 Sept 23, two days after the radio detection (ATEL #612). The Ultra-Violet/Optical telescope (UVOT) obtained images through the U, B, V, UVW1, and UVW2 filters; GRO J1655-40 was ... | 2005-09-27 05:15:00 | radio,optical,ultra-violet,x-ray,binary,black hole,transient |
615 | INTEGRAL sees XTE J1739-285 change to hard state | S. E. Shaw (Southampton, UK / ISDC, Geneva); E. Kuulkers (ESA/ESAC, Spain); T. Oosterbroek (ESA/ESTEC, Netherlands); T. J.-L. Courvoisier (ISDC, Geneva); A. Paizis (ISDC, Geneva / IASF, Milano); K. Ebisawa (NASA/GSFC, USA); P. Kretschmar (ESA/ESAC, Spain); C. Markwardt (NASA/GSFC, USA); R. Wijnands (UvA, Nethe... | Continuing INTEGRAL Galactic Bulge Monitoring observations have detected the X-ray transient XTE J1739-285 above 20 keV.
XTE J1739-285 was first detected by INTEGRAL during JEM-X observations on 2005-08-25 with estimated fluxes of up to 120 and 70 mCrab in the 3-10 and 10-20 keV bands respectively (ATel #592). During ... | 2005-09-30 22:26:00 | x-ray,gamma ray,binary,black hole,transient |
616 | New X-ray transient IGR J17419-2802 discovered with INTEGRAL | S. A. Grebenev (IKI, Moscow), S. V. Molkov (IKI, Moscow), R. A. Sunyaev (IKI, Moscow; MPA, Garching) | We report the discovery with the IBIS/ISGRI telescope on board INTEGRAL of a previously unknown X-ray source IGR J17419-2802. The source was detected during deep Open Program observations of the Galactic center field carried out on September 29, 2005. The signal-to-noise ratio for this source at the mosaic image was S/... | 2005-10-01 14:23:00 | radio,infra-red,optical,x-ray,black hole,neutron star,star,transient,request for observations |
617 | Swift observations of IGR J17419-2802 | J. A. Kennea, D. N. Burrows, J. Nousek (PSU) and N. Gehrels (GSFC) | At 16:05:16 UT on October 3rd, 2005 Swift began a Target of Opportunity observation of the INTEGRAL discovered X-ray transient IGR J17419-2802 (ATEL #616). Analysis of data from this observation shows a bright previously uncatalogued X-ray point-source in the field at the following coordinates: RA = 17:41:56.4, Dec = -... | 2005-10-04 09:57:00 | x-ray,transient |
618 | Optical spectra of the M31 Optical Transient | P. Reig (U. of Crete), D. Hatzidimitriou (U. of Crete), A. Manousakis (U. of Crete), W. Pietsch (MPE), G. Papamastorakis (U. of Crete) | We carried out spectroscopic observations of the optical transient near M31 reported in ATel #611 (RA = 00h38m54.63s DEC =+40o27'34.2" (J2000)) from the 1.3m telescope of the Skinakas Observatory in Crete (Greece) on the nights 28 and 29 September 2005. The spectra covered the range 3800-7000 angstroms. All the lines o... | 2005-10-04 22:05:00 | optical,cataclysmic variable,nova,transient,variables |
619 | FIRST NEAR INFRARED SPECTRUM OF V1118Ori | A. Di Paola (INAF - Osservatorio Astronomico di Roma (Italy)), D. Lorenzetti (INAF - Osservatorio Astronomico di Roma (Italy)), L. Calzoletti (INAF - Osservatorio Astronomico di Roma (Italy)), T. Giannini (INAF - Osservatorio Astronomico di Roma (Italy)), A. A.Arkarov (Central Astronomical Observatory of Pulkovo, St. P... | On (Sept. 11, 2005) the first near infrared (0.87 – 2.35 μm) spectrum of the EXOR variable V1118Ori was obtained in low resolution mode (R ~ 250), with the AZT24 telescope at Campo Imperatore (Italy). It presents strong hydrogen recombination lines of the Brackett and Paschen series, some ionic emission features possib... | 2005-10-05 22:06:00 | infra-red,star,variables |
620 | Three Type Ia Supernovae: SN 2005eu, SNF20051003-003, SNF20051004-001 | The Nearby Supernova Factory: G. Aldering, S. Bailey, D. Kocevski, B. C. Lee, S. Loken, P. Nugent, S. Perlmutter, R. Scalzo, R. C. Thomas, L. Wang, B. A. Weaver (Lawrence Berkeley National Laboratory, Berkeley, CA), P. Antilogus, S. Gilles, R. Pain, R. Pereira (Laboratoire de Physique Nucleaire et de Haute Energies de... | The Nearby Supernova Factory reports that a preliminary spectrum (range 320-1000 nm) of SN 2005eu (IAUC # 8611 ), obtained Oct 6.5 UT with the Supernova Integral Field Spectrograph (SNIFS) on the University of Hawaii 2.2-meter telescope exhibits weak Si II 6100 AA absorption, Ca II IR triplet and S II "W." The supernov... | 2005-10-07 03:07:00 | optical,asteroid,supernovae |
621 | Radio Observations of SN2005bf | A. M. Soderberg, S. R. Kulkarni (Caltech) and D. A. Frail (NRAO) | We report on our monitoring of the Type Ibc supernova SN2005bf (IAUC 8507 ) with the Very Large Array between 2005 Apr 13 and Oct 6 UT. No radio emission is detected from the SN in any of our observations. At 8.46 GHz we place 2-sigma limits of 0.11 and 0.19 mJy for our first and last epochs (t ~ 20 and 200 days after ... | 2005-10-07 04:28:00 | radio,supernovae |
622 | Type-I X-ray bursts from XTE J1739-285 | S. Brandt (DNSC, Denmark), E. Kuulkers (ESA/ESAC, Spain), A. Bazzano (IASF/INAF, Rome), T. J.-L. Courvoisier (ISDC, Geneva), A. Domingo (LAEFF, Madrid), K. Ebisawa (NASA/GSFC, USA), N. Gehrels (NASA/GSFC, USA), P. Kretschmar (ESA/ESAC, Spain), R. Krivonos (IKI/RSDC, Moscow), N. Lund (DNSC, Denmark), C. Markwardt (NASA/... | During the Galactic Bulge Monitoring and Galactic Centre Scan observations performed with INTEGRAL, two X-ray flares coming from XTE J1739-285 were observed with the X-ray monitor JEM-X (3-25 keV). The events started on UT Sep 30, 2005 11:51:21 and UT Oct 04 2005 17:49:41, respectively, and reached a net-peak flux of ~... | 2005-10-09 06:36:00 | x-ray,binary,black hole,neutron star,star,transient |
623 | New X-ray Transient, XTE J1726-476 | A. M. Levine (MIT), D. Lin (MIT), and R. A. Remillard (MIT), for the ASM team at MIT and NASA/GSFC | Observations with the RXTE All-Sky Monitor reveal X-ray emission from a new transient at coordinates 261.585, -47.570 (degrees, J2000), with a position uncertainty of 0.07 degrees at 90% confidence. The source was first detected on 2005 October 4, with an average flux of 32 (4) mCrab at 2-12 keV. By 2005 October 6 the ... | 2005-10-10 23:03:00 | x-ray,binary,transient |
624 | New X-ray transient IGR J17269-4737 discovered with INTEGRAL | M. Turler (ISDC, Geneva); M. Cadolle Bel (CEA Sacaly); R. Diehl (MPE, Garching); N.-J. Westergaard (DSRI Copenhagen); B. McBreen (Univ. College, Dublin); O. R. Williams (ISOC/ESAC, Madrid); S. A. Grebenev and A. Lutovinov (IKI, Moscow) | A new X-ray transient has been detected by the IBIS/ISGRI telescope on board INTEGRAL during an observation of the galactic center on 2005 Oct. 6-7. The new source was observed at RA=261.72, DEC=-47.622 (3.8 arcmin error) with a sigma of 6.7 and a flux of about 11 mCrab in the 20-40 keV band. In the 40-80 keV band the ... | 2005-10-10 23:47:00 | x-ray,gamma ray,binary,transient,request for observations |
625 | Swift Imaging Observation of XTE J1726-476/IGR J17269-4737 | Albert K. H. Kong (MIT) | We report a Swift observation of a new X-ray transient discovered by RXTE (ATel #623) and INTEGRAL (ATel #624). The X-ray Telescope (XRT) observation was obtained in Photon Counting (imaging) mode on 2005 October 12 00:52:58 UT and the on-source exposure time is about 1000s. The source is clearly detected with signific... | 2005-10-13 00:48:00 | optical,x-ray,transient |
626 | Swift/XRT observations of XTE J1727-476/IGR J17269-4737 | J. A. Kennea (PSU), D. Palmer (LANL), D. Burrows (PSU), N. Gehrels (GSFC) | On October 12th at 00:50 UT Swift began a 1.1ks observation of the field centered on the position reported for XTE J1727-476 in ATEL #623 (Levine et al). The field of view also contained the position reported for IGR J17269-4737 in ATEL #624 (Turler et al). We find a single bright, uncatalogued point source at the foll... | 2005-10-13 01:58:00 | optical,x-ray,transient |
627 | M31 Optical Transient TSS J004420.7+412311 | R. Quimby, M. Sellers, P. Hoeflich, J. C. Wheeler (University of Texas), and C. Gerardy (Imperial College) | We report the discovery of an optical transient near M31 using unfiltered CCD images taken on October 11.15 UT (about 16.7 mag) and October 12.12 (about 16.2 mag) using the 0.45m ROTSE-IIIb telescope at the McDonald Observatory. The object is located at RA = 00h44m20.7s DEC = +41o23'11" (J2000), which is 18' 6.6" east ... | 2005-10-13 03:30:00 | optical,cataclysmic variable,nova,transient,variables |
628 | Optical Counterpart of J1726-47 | Dipankar Maitra, Bethany Cobb, Charles Bailyn, Jenica Nelan (Yale), David Gonzalez(CTIO/SMARTS) | We obtained I-band images of the RXTE and Integral error fields of J1726-47 (ATels #623 and #624) using the SMARTS 1.3m telescope and ANDICAM instrument on Oct 10.99172 and Oct 11.99156 UT. Using the refined coordinates obtained by the Swift XRT telescope (ATels #625 and #626) we find a new object not present in the DS... | 2005-10-13 07:19:00 | optical,x-ray,binary,black hole,neutron star,star,transient,request for observations |
629 | Infrared detection of XTE J1727-476=IGR J17269-4737 | D. Steeghs, M. A.P. Torres (CfA), K. Koviak, P. McCarthy (OCIW), P. G.Jonker (SRON/CfA) | We report near-infrared imaging of the field containing the X-ray transient XTE J1727-476=IGR J17269-4737 (ATel #623, #624) obtained using the wide-field infrared camera on the 100" du Pont telescope at Las Campanas Observatory.
A series of Ks-band exposures were obtained between Oct 12 23:57UT and Oct 13 00:09UT, tot... | 2005-10-13 23:38:00 | infra-red,optical,x-ray,binary,black hole,neutron star,star,transient |
630 | Classification of SNe 2005gl and 2005gm | The Nearby Supernova Factory: N. Blanc, S. Bongard, Y. Copin, E. Gangler, L. Sauge, G. Smadja (Institut de Physique Nucleaire de Lyon), P. Antilogus, G. Garavini, S. Gilles, R. Pain, R. Pereira (Laboratoire de Physique Nucleaire et de Haute Energies de Paris), G. Aldering, S. Bailey, D. Kocevski, B. C. Lee, S. Loken, P... | The Nearby Supernova Factory reports that a spectrum (range 320-1000 nm) of supernova SN2005gl (IAUC # 8615 ), obtained Oct 13.5 UT with the Supernova Integral Field Spectrograph (SNIFS) on the University of Hawaii 2.2-meter telescope, shows it to be a Type IIn supernova at a redshift of z = 0.016, consistent with that... | 2005-10-15 07:09:00 | optical,supernovae |
631 | INTEGRAL observation of IGR J17269-4737 / XTE J1727-476 | M. Turler, S. Paltani, N. Mowlavi (ISDC, Geneva) | On October 15th at 12:18 UT INTEGRAL started a 50 ks TOO observation of IGR J17269-4737/XTE J1727-476 co-discovered one week ago by RXTE and INTEGRAL (ATels #623 and #624, respectively). The source is well detected by JEM-X in the 3-10 keV mosaic image (around 15 mCrab); it is not detected by JEM-X above 10 keV, neithe... | 2005-10-16 21:49:00 | x-ray,gamma ray,transient |
632 | Swift/XRT follow up observations of IGR J17269-4737/XTE J1727-476. | J. A. Kennea, D. N. Burrows, M. Chester, J. Nousek (PSU), D. Palmer (LANL), A. Wells (U. Leicester) and N. Gehrels (GSFC) | On October 15th, 2005 at 21:42:02 Swift/XRT began a 1.1ks follow-up observation of the Transient Source IGR J17269-4737, also known as XTE J1727-476 (ATEL #624, ATEL #625). We report on the analysis of these data, plus a refined analysis of the observation previously reported on by Kennea et al. (ATEL #626). The ne... | 2005-10-17 06:08:00 | x-ray,black hole,transient |
633 | Eclipse ingress and egress of the M33 HMXRB X-7 resolved by Chandra | M. Sasaki (CfA), W. Pietsch (MPE), F. Haberl (MPE), T. J. Gaetz (CfA), P. Ghavamian (JHU), K. S. Long (STScI), T. G. Pannuti (SSC), P. P. Plucinsky (CfA) for the CHASeM33 team | We report on the detection of the eclipse in- and egress of the high-mass X-ray binary M33 X-7 with 3.45 d orbital period (for the latest ephemeris see Pietsch et al. 2004, A&A 413, 879) within the first Chandra CHASeM33 very large program observations of M33. M33 X-7 was in the field of view of four Chandra observatio... | 2005-10-18 05:23:00 | x-ray,binary |
634 | The NIR counterpart to XTE J1747-274(=IGR J17473-2721) | M. A.P. Torres, D. Steeghs, M. R.Garcia, J. E.McClintock (CfA), P. G.Jonker (SRON/CfA), P. J.Callanan (UCC) | We report follow-up observations confirming the near-infrared (NIR) counterpart to the X-ray transient XTE J1747-274/IGR J17473-2721 (ATEL #467, #498). A Ks=16.2 mag candidate was suggested in ATEL #521 on the basis of its coincidence with the Chandra localization for the X-ray source. The candidate appeared extended a... | 2005-10-19 03:47:00 | infra-red,x-ray,binary,black hole,neutron star,star,transient |
635 | Classification of SNe 2005gn and 2005hb | The Nearby Supernova Factory: N. Blanc, S. Bongard, Y. Copin, E. Gangler, L. Sauge, G. Smadja (Institut de Physique Nucleaire de Lyon), P. Antilogus, S. Gilles, R. Pain, R. Pereira (Laboratoire de Physique Nucleaire et de Haute Energies de Paris), G. Aldering, S. Bailey, D. Kocevski, B. C. Lee, S. Loken, P. Nugent, S. ... | The Nearby Supernova Factory reports that spectra (range 320-1000 nm) of supernovae 2005gn and 2005hb (IAUC # 8616 ), obtained October 18.6 UT with the Supernova Integral Field Spectrograph on the University of Hawaii 2.2-meter telescope, indicate that both supernovae are of Type II. SN2005gn is a Type IIn supernova at... | 2005-10-19 07:20:00 | optical,supernovae |
636 | Classification of SDSS SN5944, a Type Ia Supernova | The Nearby Supernova Factory: N. Blanc, S. Bongard, Y. Copin, E. Gangler, L. Sauge, G. Smadja (Institut de Physique Nucleaire de Lyon), P. Antilogus, S. Gilles, R. Pain, R. Pereira (Laboratoire de Physique Nucleaire et de Haute Energies de Paris), G. Aldering, S. Bailey, D. Kocevski, B. C. Lee, S. Loken, P. Nugent, S. ... | The Nearby Supernova Factory reports that a spectrum (range 320-1000 nm) of Sloan Digital Sky Survey supernova SN5944 (SDSS SN Webpage, CBET #254), obtained October 18.5 UT with the Supernova Integral Field Spectrograph on the University of Hawaii 2.2-meter telescope, reveals that it is a Type Ia supernova on the rise,... | 2005-10-20 04:16:00 | optical,supernovae |
637 | Renewed activity of the neutron star X-ray transient SAX J1747.0-2853 | Rudy Wijnands, J. Miller-Jones, M. van der Klis (U. Amsterdam), M. Rupen, (NRAO/GSFC), J. in 't Zand (SRON-Utrecht), Q. D. Wang (U. Massachusetts), J. Grindlay, D. Steeghs (CfA), R. Fender, R. Cornelisse, T. Maccarone (U. Southampton), E. Kuulkers (ISOC, ESA/ESAC), C. B. Markwardt (U. Maryland, NASA/GSFC), J. Homan (M... | An X-ray transient was detected in outburst on 18 October 2005 during one of our Chandra/HRC-I observations as part of the XMM-Newton/Chandra monitoring campaign of the 1.7 square degree around Sgr A* (Wijnands et al. 2005, A&A submitted, astro-ph/0508648). The source was located ~15 arcminutes away from the aim-point ... | 2005-10-21 00:45:00 | x-ray,binary,neutron star,star,transient,request for observations |
638 | Further Chandra observations of SAX J1747.0-2853 and the region around Sgr A* | R. Wijnands (U. Amsterdam), M. Rupen (NRAO), D. Steeghs (CfA), Q. D. Wang (U. Massachusetts), E. Cackett (U. St Andrews), E. Kuulkers (ISOC, ESA/ESAC), R. Fender, R. Cornelisse, T. Maccarone (U. Southampton), J. Grindlay (CfA), J. Miller-Jones, M. van der Klis (U. Amsterdam), J. Homan (MIT), J. in 't Zand (SRON-Utrecht... | On 20-21 October 2005, the remaining six Chandra/HRC-I observations (as mentioned in ATEL #637) were performed as part of the XMM-Newton/Chandra monitoring campaign of the 1.7 square degree region around Sgr A* (Wijnands et al. 2005, A&A submitted, astro-ph/0508648). The neutron star X-ray transient SAX J1747.0-2853 wa... | 2005-10-23 03:45:00 | radio,x-ray,binary,neutron star,star,transient |
639 | Discovery of SNF20051021-001, a Type II Supernova | The Nearby Supernova Factory: P. Antilogus, S. Gilles, R. Pain, R. Pereira (Laboratoire de Physique Nucleaire et de Haute Energies de Paris), N. Blanc, S. Bongard, Y. Copin, E. Gangler, L. Sauge, G. Smadja (Institut de Physique Nucleaire de Lyon), G. Aldering, S. Bailey, D. Kocevski, B. C. Lee, S. Loken, P. Nugent, S. ... | The Nearby Supernova Factory reports the discovery of supernova SNF20051021-001 (coordinates RA 04:16:12.37 DEC -13:13:11.6 J2000.0) in images obtained October 21.5 UT at an approximate magnitude of 17.8 (calibrated to R) using the Quest II camera on the Palomar Oschin 48-inch telescope as a part of the JPL Near-Earth ... | 2005-10-24 12:16:00 | optical,asteroid,supernovae |
640 | Type Determination for SN 2005ea | A. Gal-Yam and D. C. Leonard (Caltech) | A. Gal-Yam and D. Leonard report for the CCCP: We have observed SN 2005ea (Gray and Lane; IAUC # 8600 ) with the DBSP spectrograph mounted on the Hale 200" telescope at Palomar Observatory on 2005 October 25 UT, under poor conditions. Reduction of the noisy red spectrum shows it is similar to that of SN Ia 1994D around... | 2005-10-25 13:43:00 | optical,supernovae |
641 | Swift Observation of SAX J1747.0-2853 | A. K.H. Kong (MIT), R. Wijnands (U. Amsterdam), J. Homan (MIT) | Following the recent report of renewed activity of the neutron star X-ray transient SAX J1747.0-2853 (ATel #637, #638), we have obtained a Swift TOO observation of the field on 2005 October 25. The 1500-sec X-ray Telescope (XRT) observation was obtained in Photon Counting (imaging) mode and detected about 1000 counts f... | 2005-10-26 15:55:00 | x-ray,binary,neutron star,star,transient |
642 | On the (hard) X-ray activity of SAX J1747.0-2853 as seen with INTEGRAL | E. Kuulkers, P. Kretschmar (ESA/ESAC, Spain), S. Brandt (DNSC, Denmark), R. Wijnands (UvA, Netherlands), T. J.-L. Courvoisier (ISDC, Geneva), K. Ebisawa (NASA/GSFC, USA), J. J.M. in 't Zand (SRON, Netherlands), C. Markwardt (NASA/GSFC, USA), N. Mowlavi (ISDC, Geneva), T. Oosterbroek, A. Orr (ESA/ESTEC, Netherlands), A.... | Following the report of the X-ray activity of the neutron star transient SAX J1747.0-2853 (ATels #637, #638, #641) we add that its current outburst was detected by INTEGRAL on Oct 10 and 12, 2005. The JEM-X 3-10 keV fluxes were about 70 and 115 mCrab, respectively, suggesting that the X-ray peak of the outburst was rea... | 2005-10-26 20:37:00 | x-ray,binary,neutron star,star,transient,variables |
643 | Two Type Ia Supernovae: SNF20051020-000 and SNF20051023-000 | The Nearby Supernova Factory: P. Antilogus, S. Gilles, R. Pain, R. Pereira (Laboratoire de Physique Nucleaire et de Haute Energies de Paris), N. Blanc, S. Bongard, Y. Copin, E. Gangler, L. Sauge, G. Smadja (Institut de Physique Nucleaire de Lyon), G. Aldering, S. Bailey, D. Kocevski, B. C. Lee, S. Loken, P. Nugent, S. ... | The Nearby Supernova Factory reports the discovery of two new type Ia supernovae. Both were discovered on images taken with the QUEST II camera on the Palomar Oschin 48-inch telescope as a part of the JPL Near-Earth Asteroid Tracking component of the Palomar-QUEST survey. Spectra were obtained with the Supernova Integr... | 2005-10-27 05:26:00 | optical,asteroid,supernovae |
644 | RXTE/PCA and Swift/XRT observations of GRO J1655-40 during decay | Jeroen Homan (MIT), Albert Kong (MIT), John Tomsick (UCSD), Jon Miller (U. Mich), Sergio Campana (INAF/OAB), Rudy Wijnands (U. Amsterdam), Tomaso Belloni (INAF/OAB), Walter Lewin (MIT) | Following its transition to the hard state (ATels #607,#612), we have continued our daily RXTE/PCA observations of the black hole X-ray transient GRO J1655-40 (see http://tahti.mit.edu/opensource/1655 ). Between September 23, when the source reached the hard state, and October 10, the RXTE/PCA count rate decreased expo... | 2005-10-28 06:45:00 | x-ray,binary,black hole,transient |
645 | SGR 1806-20: X-ray and IR post-Giant Flare monitoring | Nanda Rea (SRON), GianLuca Israel (OAR), Stefano Covino (OAB), Andrea Tiengo (IASF-MI), Elisa Nichelli (OAR), Roberto Turolla (Univ. Padua), Silvia Zane (MSSL), Sandro Mereghetti (IASF-MI), Paolo Esposito (IASF-MI) and Luigi Stella (OAR) | We report on the status of our IR and X-ray monitoring the SGR 1806-20 after the 2004 December 27th Giant Flare.
The IR counterpart of SGR1806-20 (Israel et al. 2005, A&A, 438, L1; Kosugi et al. 2005, ApJ, 623, L125) was observed on 11-12th September 2005 at the VLT-UT4 equipped with the IR adaptive optics instrument ... | 2005-10-28 20:18:00 | infra-red,x-ray,gamma ray,soft gamma-ray repeater |
646 | Nebular Spectroscopy of SN 2005bf | A. M. Soderberg (Caltech), E. Berger (Carnegie), E. Ofek and D. C. Leonard (Caltech) | We observed the peculiar Type Ib SN2005bf (IAUCs 8507 , 8509 , 8520 ) with the Low Resolution Imaging Spectrometer on the Keck I telescope on 2005 October 31 UT. The SN has clearly entered the nebular phase, showing strong [O I], [Ca II], [Fe II], Ca II and Na I emission lines. In addition, the spectrum is dominated by... | 2005-11-01 15:12:00 | optical,supernovae |
647 | New outburst of the transient X-ray pulsar GRO J1008-57 detected by INTEGRAL | S. A. Grebenev (IKI, Moscow), G. De Cesare (IASF/CNR, Rome), J. Chenevez (DNSC, Copenhagen), A. Paizis (ISDC, Geneva/IASF, Milano), W. Hermsen (SRON, Utrecht), C. Winkler (ESA/ESTEC, Noordwijk), R. Diehl (MPE, Garching), A. Domingo Garau (LAEFF, Madrid) | The X-ray pulsar GRO J1008-57 was detected in outburst during INTEGRAL Galactic Plane Scan observations performed on October 30, 2005, at 08h-10h UTC. The signal-to-noise ratio for this source was 13.2 in the mosaic image obtained by the IBIS/ISGRI telescope in the 18-45 keV band and the average flux was 31+/-3 mCrab. ... | 2005-11-02 23:01:00 | radio,optical,x-ray,neutron star,pulsar,star,transient,request for observations |
648 | Non-Radial Pulsations from RX J0105.1-7211 | Paul C. Schmidtke and Anne P. Cowley (Arizona State Univ.) | RX J0105.1-7211 (SXP3.34) is a Be/neutron-star binary in the Small Magellanic Cloud. It has one of the shortest pulsation periods among the many SMC Be/pulsar systems. The optical counterpart is #1506 from the emission-line catalogue of Meyssonnier & Azzopardi (1993, A&AS, 102, 451). In addition Coe et al. (2005, MNRAS... | 2005-11-03 02:57:00 | optical,x-ray,binary,neutron star,pulsar,star |
649 | Swift/BAT Discovery of the Orbital Period of IGR J16320-4751 | R. Corbet (GSFC/USRA), L. Barbier (GSFC), S. Barthelmy (GSFC), J. Cummings (GSFC/NRC), E. Fenimore (LANL), N. Gehrels (GSFC), D. Hullinger (UMD), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), D. Palmer (LANL), A. Parsons (GSFC), T. Sakamoto (GSFC/NRC), G. Sato (ISAS), J. Tueller (GSFC), on behalf of the Swift-Survey t... | The Swift/Burst Alert Telescope (BAT) light curve of the X-ray pulsar IGR J16320-4751 obtained between 2004 Dec 21 and 2005 Sep 17 shows a strong modulation at a period of 8.96 days. The mean BAT count rate of IGR J16320-4751 in the range 14 - 200 keV is 5.7E-4 counts/s which corresponds to approximately 13 mCrab. Most... | 2005-11-03 03:50:00 | x-ray,gamma ray,binary,neutron star,pulsar,star,transient |
650 | A reversal of the X-ray spectral evolution of RX J0720.4-3125 : the blackbody temperature is decreasing | Jacco Vink (Univ. Utrecht), Frank Haberl (MPE), Cor de Vries (SRON), Silvia Zane (MSSL), Roberto Turolla (Univ. Padua), Mariano Mendez (SRON), and Frank Verbunt (Univ. Utrecht) | This telegram is prompted by the latest XMM-Newton observation of the isolated, radio quiet, neutron star RX J0720.4-3125, which shows that the blackbody temperature started decreasing (see Table below). This means that the spectral evolution observed over the last 4 years has reversed.
Much like other sources in its ... | 2005-11-03 06:51:00 | radio,x-ray,neutron star,star |
651 | Nova in M31 | E. Ovcharov (SU, Sofia), A. Kostov A. (IA, Sofia), I. Stanev (SU, Sofia), Ts. Georgiev (IA, Sofia), P. Nedialkov (SU, Sofia) | We report the discovery of an apparent nova located at R.A. = 0h42m41s.99, Decl. = +41o18'02".1 (equinox 2000.0), which is 26".3 west and 113".6 north of the center of M31. Available R magnitude from 3x300s CCD images taken with the 50/70cm Schmidt telescope at NAO Rozhen, Bulgaria: Nov. 03.941 UT, 18.70. Nothing visib... | 2005-11-05 18:21:00 | optical,nova,variables |
652 | Discovery of deep eclipses in the cataclysmic variable 1RXS J020929.0+283243 | D. V. Denisenko (IKI, Moscow), R. A. Sunyaev (IKI, Moscow; MPA, Garching), Z. Aslan (TUG, Antalya), I. Khamitov (TUG, Antalya) | In course of the search for optical identifications of bright ROSAT sources with the 1.5-m Russian-Turkish Telescope RTT150 (Bakyrlytepe, Turkey) we have discovered very deep (4.5 mag) eclipses of the cataclysmic variable in the error box of 1RXS J020929.0+283243. Six eclipses with duration of about 6 min were observed... | 2005-11-08 18:17:00 | optical,x-ray,cataclysmic variable,variables |
653 | Radio observation of the X-ray pulsar GRO J1008-57 during outburst | Simone Migliari (UCSD), Bob Sault (ATNF), John Tomsick (UCSD) | Australia Telescope Compact Array (ATCA) radio observations of the transient X-ray pulsar GRO J1008-57 during its X-ray outburst (ATEL #647), taken at 8.6 GHz on November 6, have detected no radio counterpart with a flux density 1-sigma sensitivity of 41 microJy/beam. Based on the weighted average of the dwell count ra... | 2005-11-09 03:11:00 | radio,x-ray,binary,black hole,neutron star,pulsar,star,transient |
654 | Chandra imaging of IGR J16493-4348 | L. Kuiper (SRON), P. Jonker (SRON/CfA), W. Hermsen (SRON/Amsterdam), K. O'Brien (ESO) | We observed the environment of IGR J16493-4348 with the Chandra HRC-I instrument on 2005 Oct 21.1965 for 4.1 ks in order to shed light on its very unlikely association with the normal and non-energetic radio pulsar PSR J1649-4349 (see e.g.ATEL #232 and Bird et al. 2004, ApJ 607, L33). Within the 2 arcminute error circl... | 2005-11-09 20:06:00 | radio,far-infra-red,infra-red,optical,x-ray,gamma ray,binary,neutron star,pulsar,star,variables |
655 | Photometric typing of SN 2005ke | Avishay Gal-Yam (Caltech) | Applying the methods described by Gal-Yam et al. (2004, PASP, 116, 597; see also Poznanski et al. 2002, PASP, 114, 833) to the Swift/UVOT photometry of SN 2005ke reported by Immler & Brown (CBET #289) we determine the following constraints on the type of this young, nearby SN: 1) The UBV photometry of SN 2005ke is well... | 2005-11-16 01:49:00 | optical,supernovae |
656 | Classification of SN 2005kd | The Nearby Supernova Factory: P. Antilogus, S. Gilles, R. Pain, R. Pereira (Laboratoire de Physique Nucleaire et de Haute Energies de Paris), N. Blanc, S. Bongard, Y. Copin, E. Gangler, L. Sauge, G. Smadja (Institut de Physique Nucleaire de Lyon), G. Aldering, S. Bailey, D. Kocevski, B. C. Lee, S. Loken, P. Nugent, S. ... | The Nearby Supernova Factory reports that a spectrum (range 320-1000 nm) of SN2005kd (CBET #285), obtained November 15.6 UT with the Supernova Integral Field Spectrograph on the University of Hawaii 2.2-meter telescope, shows it to be a Type IIn supernova at an early age. H Balmer emission lines up to H-epsilon are pre... | 2005-11-16 12:03:00 | optical,supernovae |
657 | Continuing activity of the 2.65 ms accretion-powered pulsar HETE J1900.1-2455 | Duncan Galloway (U. Melbourne), Ed Morgan (MIT), Phil Kaaret (U. Iowa), Deepto Chakrabarty (MIT), Nat Butler (MIT) and Motoko Suzuki (RIKEN) | We report on the ongoing monitoring of the 2.65 ms pulsar, HETE J1900.1-2455 (ATels 516, 523, 525, 526, 538 and others) with the Rossi X-ray Timing Explorer (RXTE). The source remains active at a flux of approximately 9e-10 ergs/cm2/s (2.5-25 keV), more than 150 d after the outburst commenced (around June 14). This is ... | 2005-11-17 08:08:00 | optical,x-ray,binary,neutron star,pulsar,star,transient,request for observations |
658 | Dwarf Nova TSS J022216.4+412260 | R. Quimby, M. Sellers, P. Mondol (U. Texas) and The Nearby Supernova Factory: P. Antilogus, S. Gilles, R. Pain, R. Pereira (Laboratoire de Physique Nucleaire et de Haute Energies de Paris), N. Blanc, S. Bongard, Y. Copin, E. Gangler, L. Sauge, G. Smadja (Institut de Physique Nucleaire de Lyon), G. Aldering, S. Bailey, ... | We report the discovery of an optical transient using unfiltered CCD images taken on November 16.1 UT (about 15.5 mag) and November 17.1 (also about 15.5 mag) using the 0.45m ROTSE-IIIb telescope at the McDonald Observatory. The object is located at RA = 02h22m16.4s DEC = +41o22'59.9" (J2000; uncertainty +/- 0.5"). TSS... | 2005-11-20 03:03:00 | optical,cataclysmic variable,nova,supernovae,transient,variables |
659 | Discovery of Type IIn Supernova SNF20051117-001 and classification of Type Ia SN2005ki | The Nearby Supernova Factory: C. Bonnaud, E. Pecontal (Centre de Recherche Astronomique de Lyon), N. Blanc, Y. Copin, E. Gangler, L. Sauge, G. Smadja (Institut de Physique Nucleaire de Lyon), P. Antilogus, S. Gilles, R. Pain, R. Pereira (Laboratoire de Physique Nucleaire et de Haute Energies de Paris), G. Aldering, S. ... | The Nearby Supernova Factory reports the discovery of supernova SNF20051117-001 (coordinates RA 08:40:09.18 DEC -05:36:02.2 J2000.0) in images obtained November 17.5 UT with an approximate magnitude of 16.3 (calibrated to R) using the QUEST II camera on the Palomar Oschin 48-inch telescope as a part of the JPL Near-Ear... | 2005-11-21 04:01:00 | infra-red,optical,ultra-violet,asteroid,supernovae |
660 | INTEGRAL detects renewed activity of Aquila X-1: beginning of a new outburst | J. Rodriguez (CEA Saclay, France), S. E. Shaw (U. Southampton, UK; & ISDC, Geneva, Switzerland), | We observed the region around GRS 1915+105 with INTEGRAL between November 20 ~6h40 UTC and November 21 ~11h00 UTC (~100 ks observation). We report a positive detection of transient Atoll source Aquila X-1 with IBIS/ISGRI in all individual pointings in the energy ranges 20-40 and 40-80 keV. | 2005-11-22 20:59:00 | x-ray,gamma ray,black hole,neutron star,star,transient,request for observations |
661 | Classification of SN 2005kh, a Type II Supernova | The Nearby Supernova Factory: G. Aldering, S. Bailey, S. Bongard, D. Kocevski, B. C. Lee, S. Loken, P. Nugent, S. Perlmutter, R. Scalzo, R. C. Thomas, L. Wang, B. A. Weaver (Lawrence Berkeley National Laboratory, Berkeley, CA), C. Bonnaud, E. Pecontal (Centre de Recherche Astronomique de Lyon), N. Blanc, Y. Copin, E. G... | The Nearby Supernova Factory reports that a spectrum (range 320-1000 nm) of supernova 2005kh (CBET #292), obtained November 22.6 UT with the Supernova Integral Field Spectrograph (SNIFS) on the University of Hawaii 2.2-meter telescope, shows it to be a a Type II SN, at a redshift consistent with that of its host NGC 30... | 2005-11-23 03:57:00 | optical,supernovae |
662 | INTEGRAL detection of three AGN in the Cassiopeia region, including a new source IGR J02097+5222 | L. Kuiper (SRON), W. Hermsen (SRON/University of Amsterdam), J. in 't Zand (SRON/Utrecht University) and P. R. den Hartog (SRON) | The Cassiopeia region was observed by INTEGRAL from 2005 June 29 to July 16 for about 1 Ms. In this observation, targeted at anomalous X-ray pulsar 4U 0142+61, we discovered in IBIS ISGRI sky maps a new INTEGRAL hard X-ray (20-65 keV) source, IGR J02097+5222, at position R.A.= 02 09 45.6, Decl. = 55 22 48.0 (equinox 20... | 2005-11-24 18:50:00 | x-ray,gamma ray,agn,pulsar,quasar |
663 | Radio Observations of SN 2005gj | A. M. Soderberg (Caltech) and D. A. Frail (NRAO) | We observed the hydrogen-rich Type Ia SN 2005gj (IAUC 8633 ) with the Very Large Array on Nov 25.40 UT at 8.46 GHz. We do not detect a radio source at the optical position of the supernova. Further observations are planned. We thank J. Ulvestad, J. Wrobel and the VLA operators for making this observation possible. | 2005-11-26 03:29:00 | radio,optical,supernovae |
664 | Discovery of Type Ia SNe SNF20051119-004 and SNF20051120-005; Classification of Type Ia SN 2005km | The Nearby Supernova Factory: G. Aldering, S. Bailey, S. Bongard, D. Kocevski, B. C. Lee, S. Loken, P. Nugent, S. Perlmutter, R. Scalzo, R. C. Thomas, L. Wang, B. A. Weaver (Lawrence Berkeley National Laboratory, Berkeley, CA), N. Blanc, Y. Copin, E. Gangler, L. Sauge, G. Smadja (Institut de Physique Nucleaire de Lyon)... | The Nearby Supernova Factory reports the discovery of supernova SNF20051119-004 (coordinates RA 08:34:11.15 DEC +06:16:34.9 J2000.0) in images obtained November 19.5 UT at an approximate magnitude of 19.2 (calibrated to R) using the QUEST II camera on the Palomar Oschin 48-inch telescope as a part of the JPL Near-Earth... | 2005-11-26 08:10:00 | infra-red,optical,ultra-violet,asteroid,supernovae |
665 | IGR J02097+5222, correction to ATEL #662 | L. Kuiper (SRON), W. Hermsen (SRON/University of Amsterdam), J. in 't Zand (SRON/Utrecht University) and P. R. den Hartog (SRON) | In ATEL #662 a typographical error in the declination was made for the newly detected INTEGRAL source IGR J02097+5222. Decl. = 55 22 48.0 should read Decl. = 52 22 48.0. Excuses for the inconvenience. | 2005-11-28 20:21:00 | x-ray,gamma ray,agn,quasar,a comment |
666 | 1RXS J020929.0+283243 is a polar cataclysmic variable | P. Rodriguez-Gil (IAC), J. Casares (IAC), C. Zurita (IAC), M. A. P. Torres (CfA), D. Steeghs (CfA), R. I. Hynes (Lousiana) | We present simultaneous time-resolved photometry and spectroscopy of the eclipsing cataclysmic variable 1RXS J020929.0+283243 (ATel #652). Our data indicate that it is a new AM Herculis (i.e. polar) system. Unfiltered photometry (25-sec time resolution) was performed on 2005 November 8 UT at the 2.56-m Nordic Optical T... | 2005-11-30 18:11:00 | optical,x-ray,binary,cataclysmic variable,star,variables |
667 | Classification of SN 2005kx, a Type II Supernova | The Nearby Supernova Factory: G. Aldering, S. Bailey, S. Bongard, D. Kocevski, B. C. Lee, S. Loken, P. Nugent, S. Perlmutter, R. Scalzo, R. C. Thomas, L. Wang, B. A. Weaver (Lawrence Berkeley National Laboratory, Berkeley, CA), N. Blanc, Y. Copin, E. Gangler, L. Sauge, G. Smadja (Institut de Physique Nucleaire de Lyon)... | The Nearby Supernova Factory reports that a spectrum (range 320-1000 nm) of SN 2005kx (IAUC # 8635 ) in NGC 3197, obtained November 30.6 with the Supernova Integral Field Spectrograph on the University of Hawaii 2.2-meter telescope, reveals that it is a young Type II SN. The spectrum includes P Cygni profiles from the ... | 2005-12-01 12:53:00 | infra-red,optical,ultra-violet,supernovae |
668 | SWIFT/BAT Detections of Hard X-ray Sources | J. Tueller (NASA/GSFC), S. Barthelmy (NASA/GSFC), D. Burrows (PSU), A. Falcone (PSU), N. Gehrels (NASA/GSFC), D. Grupe (PSU), J. Kennea (PSU), C. B. Markwardt (U. Md. & NASA/GSFC), R. F. Mushotzky (NASA/GSFC), G. K. Skinner (CESR) | We report the detections of new high energy sources from the Swift Burst Alert Telescope (BAT) hard X-ray survey, and subsequent follow-up observations with the X-ray Telescope (XRT). The BAT survey covers the 15-200 keV band, and the time range Dec 2004 - Mar 2005. Sky coverage was not uniform, so the survey is not ye... | 2005-12-06 03:12:00 | x-ray,gamma ray,agn,black hole,cataclysmic variable,quasar,variables |
669 | SWIFT/BAT Detections of Hard X-ray Sources II | J. Tueller (NASA/GSFC), S. Barthelmy (NASA/GSFC), D. Burrows (PSU), A. Falcone (PSU), N. Gehrels (NASA/GSFC), D. Grupe (PSU), J. Kennea (PSU), C. B. Markwardt (U. Md. & NASA/GSFC), R. F. Mushotzky (NASA/GSFC), G. K. Skinner (CESR) | Table of BAT survey source identifications described in ATEL #668. | 2005-12-06 03:14:00 | x-ray,gamma ray,agn,black hole,cataclysmic variable,quasar,variables |
670 | Radio Observations of SN 2005hz | A. M. Soderberg (Caltech) | We observed the broad-lined Type Ic SN 2005hz with the Very Large Array on Dec 6.1 UT at 8.46 GHz. No radio source is detected at the optical position. We place an upper limit of 0.1 mJy which implies a radio luminosity 100 times fainter than SN 1998bw on a comparable timescale. | 2005-12-07 03:41:00 | radio,optical,supernovae |
671 | Radio Observations of SN 2005kz (correction) | A. M. Soderberg (Caltech) | ATEL #670 should read SN 2005kz (instead of 2005hz). We apologize for this typo. The corrected text follows here: "We observed the broad-lined Type Ic SN 2005kz with the Very Large Array on Dec 6.1 UT at 8.46 GHz. No radio source is detected at the optical position. We place an upper limit of 0.1 mJy which implies a ra... | 2005-12-07 03:50:00 | radio,optical,supernovae |
672 | IGR J01583+6713, a new hard X-ray transient discovered by INTEGRAL | C. Steiner, D. Eckert, N. Mowlavi (ISDC, Geneva), A. Decourchelle (CEA, Saclay), J. Vink (SRON, Netherlands) | A new hard X-ray transient has been discovered by the IBIS/ISGRI imager on board INTEGRAL during an open-program observation of the Cas A region on 2005 Dec. 6-7. The new source was observed at RA=29.57, DEC=+67.22 deg with an uncertainty of 2 arcmin. Although it is not detected in individual Science Windows, the sourc... | 2005-12-12 19:49:00 | x-ray,transient,request for observations |
673 | Swift/XRT detection and localization of IGR J01583+6713 | J. A. Kennea, J. L. Racusin, D. N. Burrows, S. Hunsberger, J. A. Nousek (PSU) and N. Gehrels (NASA/GSFC) | At 00:00 UT on December 13th, 2005 Swift began a Target of Opportunity observation of IGR J01538+6713, a recently discovered hard X-ray transient source discovered by INTEGRAL (Steiner et al., ATEL #672). Analysis of 5ks of XRT data from this observation reveals a single point source inside the INTEGRAL 2 arcminute rad... | 2005-12-13 20:21:00 | optical,x-ray,transient |
674 | New orbital period, plus clarification on pulse periods, for X-ray pulsars in the SMC | J. L. Galache (Southampton University), R. H.D. Corbet (GSFC and USRA), M. J. Coe (Southampton University), S. Laycock (CfA), C. B. Markwardt (GSFC & University of Maryland) and F. E. Marshall (GSFC) | The Small Magellanic Cloud pulsar SXP169 (XTE J0054-720, RX J0052.9-7158) was discovered by Lochner et al. (1997, IAUC # 6814 ). SXP165 was reported by Corbet et al. (2004, AIP Conf. Proc. 714, 337). Using data from the weekly monitoring campaign of the SMC carried out with the RXTE Proportional Counter Array, a search... | 2005-12-14 00:30:00 | x-ray,binary,neutron star,pulsar,star,transient |
675 | Likely Start of X-Ray Outburst from 4U 1630-47 | John A. Tomsick (UC San Diego) | Recent measurements of the recurrent black hole transient and microquasar 4U 1630-47 with the Rossi X-ray Timing Explorer All-Sky Monitor indicate that a new outburst from this source may be beginning. On Dec. 8, a single ASM dwell gave a count rate of 10.6 +/- 3.7 counts/s (151 +/- 48 millicrab, 1.5-12 keV). Four meas... | 2005-12-15 04:14:00 | radio,x-ray,black hole,the sun,transient,request for observations |
676 | A 0535+26 Begins Outburst | Mark H. Finger, NSSTC/USRA | The Be/X-ray transient pulsar A 0535+26 is beginning another outburst. Observations with RXTE/PCA on December 15.4 and 17.3 show fluxes of 4 and 28 mCrab respectively. These fluxes, which are based on the standard 1 PCA rates (2.5-60 keV), are lower than at the same phase in the previous 111 day orbit cycle (ATel #595 ... | 2005-12-18 04:11:00 | x-ray,binary,pulsar,transient |
677 | SWIFT/BAT Detections of Hard X-ray Sources III | J. A. Kennea (PSU), C. B. Markwardt (U. Md. & NASA/GSFC), J. Tueller (NASA/GSFC), S. Barthelmy (NASA/GSFC), D. Burrows (PSU), S. Campana (OAB), A. Falcone (PSU), N. Gehrels (NASA/GSFC), O. Godet (U. Leceister) D. Grupe (PSU), H. Krimm (GSFC/NASA), V. Mangano (INAF), T. Mineo (INAF), C. Pagani (OAB), K. Page (U. Leceist... | We report on further detections of new high energy sources from the Swift Burst Alert Telescope (BAT) hard X-ray survey, and subsequent follow-up observations with the X-ray Telescope (XRT). For previously reported sources and an explanation of the BAT survey observing campaign are given by Tueller et al. (ATEL #668, A... | 2005-12-21 02:37:00 | optical,x-ray,agn,black hole,neutron star,quasar,star |
678 | Swift-BAT discovery of a transient pulsar SWIFT J1626.6-5156 | D. Palmer (LANL), S. Barthelmy (GSFC), J. Cummings (GSFC/NRC), N. Gehrels (GSFC), J. Kennea (PSU), H. Krimm (GSFC/USRA), C. B. Markwardt (GSFC/UMD), J. Tueller (GSFC) on behalf of the Swift-BAT team | Swift-BAT detected a new pulsar at RA, Dec 246.632,-51.945 {16h 26m 31.8s,-51d 56' 41.6"} (J2000) with an uncertainty of 2.5 arcmin (radius, 90%, stat+sys). We designate this new source SWIFT J1626.6-5156 (Krimm, et al., GCN 4361; Barthelmy et al, GCN 4362). No obvious counterparts were found in a search of Simbad, or ... | 2005-12-21 04:42:00 | x-ray,gamma ray,binary,neutron star,pulsar,star,the sun,transient,request for observations |
679 | RXTE PCA observations of SWIFT J1626.6-5156 | C. B. Markwardt (U. Maryland & NASA/GSFC) & J. H. Swank (NASA/GSFC) | RXTE observed the transient pulsar SWIFT J1626.6-5156 (Palmer et al., ATEL #678) on 2005 Dec 19 21:07 (UT) for 670 seconds and on 2005 Dec 20 02:56 for 3800 seconds.
The source had a mean flux of ~120 mCrab (2-10 keV). At the beginning of the second observation, the pulse peaks were seen to increase with time from abo... | 2005-12-21 06:09:00 | x-ray,binary,neutron star,pulsar,star,transient |
680 | 2MASS J05162881+2607387 is a Double-Lined Eclipsing Low-Mass Binary | Amanda J. Bayless (San Diego State University), Jerome A. Orosz (San Diego State University) | The star known as 2MASS J05162881+2607387 (J0516) was discovered to be an eclipsing binary by Schuh et al. (2003, A&A, 410, 649). Assuming that the orbital period is the same as the eclipse period (1.29395 days), Schuh et al. suggested that J0516 consists of a K7V star and a brown dwarf. Schuh et al. also considered th... | 2005-12-21 09:31:00 | optical,binary,star,the sun,variables |
681 | Be Star Counterpart of X-ray Transient IGR J01583+6713 | J. P. Halpern, S. Tyagi (Columbia U.) | Kennea et al. (ATel #673) proposed an optical/IR candidate for the hard X-ray transient IGR J01583+6713 (Steiner et al., ATel #672) based on its positional coincidence with a Swift XRT source detection. The USNO-B1.0 POSS II magnitudes of the star are B=14.98, R=13.24, I=12.12. It is located at RA = 01h 58m 18.44s, Dec... | 2005-12-24 18:55:00 | optical,x-ray,binary,star,transient |
682 | Be Star Counterpart of X-ray Transient IGR J06074+2205 | J. P. Halpern, S. Tyagi (Columbia U.) | We report a probable optical counterpart of the transient X-ray source IGR J06074+2205 (Chenevez et al., ATel #223) discovered by the JEM-X telescopes on INTEGRAL. On 2005 Dec. 27, using the MDM 2.4m telescope to obtain low-resolution spectra of bright stars in the 2' radius X-ray error circle, we find a Be star at R.A... | 2005-12-27 19:45:00 | radio,optical,x-ray,binary,star,transient |
683 | Mrk 421 in outburst | Wei Cui (Purdue University), Henric Krawczynski (Washington University), Trevor Weekes (SAO), on behalf of the VERITAS Collaboration | We report that the TeV blazar Mrk 421 is currently in outburst at TeV energies, as seen by the Whipple 10 m gamma-ray telescope. The source exceeded about 2 crab in flux over the past several nights! We continue to monitor it at TeV energies. Observations at other wavelengths are strongly encouraged. | 2005-12-30 05:05:00 | gamma ray,tev,agn,blazar,request for observations |
684 | Discovery of four new hard X-ray sources in the Circinus and Carina region by INTEGRAL | L. Kuiper (SRON), S. Keek (SRON), W. Hermsen (SRON/Amsterdam), P. G. Jonker (SRON/CfA), D. Steeghs (CfA) | We report the discovery with IBIS ISGRI of three new hard X-ray (>20 keV) sources in the Circinus region during INTEGRAL observations of PSR B1509-58. These observations have been performed between 2004, July 24 and 2005, March 3, totalling an exposure time of about 900 ks. Positional and flux information is given in t... | 2006-01-04 17:14:00 | optical,x-ray,gamma ray,agn,binary,neutron star,quasar,star |
685 | Follow-up radio and X-ray observations of 4U1630-47 | E. Gallo (UCSB), J. Tomsick (UCSD), R. Fender (Southampton), T. Tzioumis (ATNF), R. Sault (ATNF), T. Maccarone (Southampton), T. Belloni (INAF-OAB) | Observations with the Australia Telescope Compact Array of the black hole binary 4U1630-47, performed on December 21, 25, 27 and 29, failed to detect a radio counterpart to the outbursting X-ray source (ATEL #675) on any of the four dates. Measured rms noise levels are respectively 0.12, 0.10, 0.26, 0.25 mJy at 4.8 GHz... | 2006-01-06 03:56:00 | radio,x-ray,binary,black hole,transient |
686 | IGR J14536-5522 is identified by Swift | K. Mukai, (NASA/GSFC & USRA), C. B. Markwardt (U. Md. & NASA/GSFC), J. Tueller (NASA/GSFC), S. Barthelmy (NASA/GSFC), D. Burrows (PSU), S. Campana (OAB), A. Falcone (PSU), N. Gehrels (NASA/GSFC), O. Godet (U. Leceister), D. Grupe (PSU), J. A. Kennea (PSU), H. Krimm (GSFC/NASA), V. Mangano (INAF), T. Mineo (INAF), C. Pa... | The BAT survey source Swift J1453.4-5524 is coincident with IGR J14536-5522. This is a relatively soft BAT source (kT~30-45 keV for a single temperature Bremsstrahlung fit) that appears to be variable. In a pointed Swift XRT observation, we find a moderately bright (3.3e-11 ergs/cm^2 s keV in 0.4-10 keV) x-ray source a... | 2006-01-10 19:38:00 | x-ray,cataclysmic variable,variables |
687 | More RXTE PCA observations of SWIFT J1626.6-5156: a peculiar pulsating object | T. Belloni (INAF-OAB), J. Homan (MIT), S. Campana (INAF-OAB), C. B. Markwardt (U. Maryland & NASA/GSFC), N. Gehrels (NASA/GSFC) | We observed the transient pulsar SWIFT J1626.6-5156 (Palmer et al., ATEL #678, Markwardt & Swank, ATEL #679) eleven times, including the observations reported in ATEL #679, from 2005 Dec 19 to 2005 Dec 31. Strong pulsations are detected at the ~15.37s period from all observations, with a peak-to-peak pulsed amplitude o... | 2006-01-12 23:58:00 | x-ray,binary,neutron star,pulsar,star,transient |
688 | Swift XRT observations of SWIFT J1626.6-5156 | S. Campana (INAF-OAB), T. Belloni (INAF-OAB), J. Homan (MIT), J. Kennea (PSU), C. B. Markwardt (U. Maryland & NASA/GSFC), N. Gehrels (NASA/GSFC) | We observed the transient pulsar SWIFT J1626.6-5156 (Palmer et al., ATEL #678, Markwardt & Swank, ATEL #679) with Swift on Jan 12, 2006. The source has been observed about 900 s in Window Timing (WT) mode and 900 s in Photon Counting (PC) mode, allowing for a precise determination of the source position. SWIFT J1626.6-... | 2006-01-14 05:17:00 | x-ray,binary,pulsar,transient |
689 | Classification of SNe 2006D, a Premaximum Type Ia Supernova | The Nearby Supernova Factory: G. Aldering, S. Bailey, S. Bongard, D. Kocevski, B. C. Lee, S. Loken, P. Nugent, S. Perlmutter, R. Scalzo, R. C. Thomas, L. Wang, B. A. Weaver (Lawrence Berkeley National Laboratory, Berkeley, CA), N. Blanc, Y. Copin, E. Gangler, G. Smadja (Institut de Physique Nucleaire de Lyon), P. Antil... | The Nearby Supernova Factory reports that a spectrum (range 320-1000 nm) of supernova 2006D (IAUC # 8658 ) in MCG -01-33-34, obtained January 14.6 UT with the Supernova Integral Field Spectrograph on the University of Hawaii 2.2-meter telescope reveals that it is a Type Ia supernova about one week prior to maximum. Mos... | 2006-01-15 04:13:00 | infra-red,optical,ultra-violet,supernovae |
690 | Classification of SN 2006E, a Postmaximum Type Ia Supernovae | The Nearby Supernova Factory: G. Aldering, S. Bailey, S. Bongard, D. Kocevski, B. C. Lee, S. Loken, P. Nugent, S. Perlmutter, R. Scalzo, R. C. Thomas, L. Wang, B. A. Weaver (Lawrence Berkeley National Laboratory, Berkeley, CA), N. Blanc, Y. Copin, E. Gangler, G. Smadja (Institut de Physique Nucleaire de Lyon), P. Antil... | The Nearby Supernova Factory reports that a spectrum (range 320-1000 nm) of supernova 2006E (IAUC # 8658 ) in NGC 5338, obtained January 14.6 UT with the Supernova Integral Field Spectrograph on the University of Hawaii 2.2-meter telescope reveals that it is a Type Ia supernova a few weeks past maximum light. | 2006-01-15 04:33:00 | infra-red,optical,ultra-violet,supernovae |
691 | Swift Observations of Supernova 2006E in NGC 5338 | S. Immler, S. T. Holland, (Goddard Space Flight Center, NASA and Universities Space Research Association), P. J. Brown (Pennsylvania State University) and P. Milne (Steward Observatory, University of Arizona) | On behalf of the Swift-satellite team, we report on Swift Ultraviolet/Optical Telescope (UVOT) and X-Ray Telescope (XRT) observations of SN 2006E (IAUC # 8658 ) obtained on Jan. 13.83 UT. UVOT magnitudes are UVW1 [181-321 nm] = 17.27 mag (711 s exposure), and UVW2 [112-264 nm] = 18.41 mag (1,274 s). Statistical and sys... | 2006-01-15 05:47:00 | optical,ultra-violet,x-ray,supernovae |
692 | IGR J18450-0435 = AX J18450-0433 | J. P. Halpern, E. V. Gotthelf (Columbia U,) | Negueruela et al. (2005) noted that many fast X-ray transients with supergiant binary companions (SFXTs) are being found in INTEGRAL monitoring of the Galactic Plane. They mentioned that the flaring ASCA source AX J1845.0-0433, discovered on 1993 October 19, also exhibited such properties (Yamauchi et al. 1995; Coe et ... | 2006-01-15 06:13:00 | optical,x-ray,gamma ray,binary,transient |
693 | Discovery of CV ROTSE3 J154041.5-002703.2 | W. Rujopakarn, E. S. Rykoff (U Mich) on behalf of the ROTSE collaboration | Analysis of ROTSE-III sky patrol fields reveals a probable new CV which we designate ROTSE3 J154041.5-002703.2. The object was first detected in unfiltered CCD images taken on January 9.13 UT using the 0.45m ROTSE-IIId telescope at the Turkish National Observatory at Bakirlitepe, Turkey. The position of the object is (... | 2006-01-17 06:24:00 | optical,cataclysmic variable,transient,variables |
694 | Outburst of CV SDSSp J161332-000331 and Vir4/1432-0033 | F. Yuan, E. S. Rykoff (U mich) on behalf of the ROTSE collaboration | Analysis of ROTSE-III sky patrol fields reveals an outburst of CV SDSSp J161332-000331. The object was detected at 15.5 magnitude in unfiltered CCD images taken on Jan 15th 02:04:56 UT using the 0.45m ROTSE-IIId telescope at the Turkish National Observatory at Bakirlitepe, Turkey; while it has r=18 magnitude in SDSS. T... | 2006-01-18 01:49:00 | optical,cataclysmic variable,nova,variables |
695 | Discovery of twin kHz quasi-periodic oscillations (QPOs) in Cir X-1 | S. Boutloukos (U. Tubingen/U. Amsterdam), R. Wijnands, M. van der Klis (U. Amsterdam) | We report the discovery with the RXTE/PCA of twin kHz QPOs in the low mass X-ray binary Circinus X-1. Out of 497 observations in the RXTE Public data base, using standard FFT power spectral techniques we selected the 119 observations that show clear low-frequency QPOs in the 1-50 Hz range. In 80 of these power spectra ... | 2006-01-19 00:12:00 | x-ray,binary,neutron star,star |
696 | New X-ray Transient, XTE J1701-462 | R. A. Remillard and D. Lin (MIT), for the ASM team at MIT and NASA/GSFC | Observations with the RXTE All-Sky Monitor reveal a new transient at coordinates 255.26 -46.23 (degrees, J2000), with a position uncertainty of 0.10 degrees at 90% confidence. The source was first detected on 2006 January 18, with only 5 camera dwells and an average flux of 501 (13) mCrab at 2-12 keV. The beginning of ... | 2006-01-19 07:40:00 | x-ray,the sun,transient |
697 | SWIFT/BAT Detections of Hard X-ray Sources: IV | M. Ajello, J. Greiner, A. Rau (all MPE Garching), S. Barthelmy (GSFC), J. A. Kennea (PSU), A. Falcone (PSU), O. Godet (U. Leceister),D. Grupe (PSU), J. Tueller (GSFC), C. Markwardt (GSFC/UMD), R. Mushotsky (GSFC), T. Belloni (OAB), K. Mukai (GSFC), S. T. Holland (GSFC/USRA), N. Gehrels (GSFC) | We report on the first detection of hard X-rays (15-150 keV) from further 3 sources with the Swift Burst Alert Telescope (BAT), and subsequent follow-up observations with the Swift X-ray Telescope (XRT; 0.5-10 keV). In contrast Tueller et al. (ATEL #668, #669) and Kennea et al. (ATEL #677), BAT data from May-Nov 2005 h... | 2006-01-19 22:37:00 | x-ray,gamma ray,agn,binary |
698 | TT Ari: "Intermediate-High" Luminosity State Transition and Now Back | J. N. Yoon (CBNU), I. L. Andronov (ONU), Y. Kim (CBNU),S. M. Cha(CBNU) | Abstract. We report on the presently continuing "outburst-like" event in TT Ari with an amplitude of 0.9m (R) and characteristic timescales dt/dm=15.87(11)days/mag (rise at JD 2453704-715) and dt/dm=4.95(7)days/mag (fall at HJD 2453721-724). TT Ari has been recently found to be out of the "positive superhump" state, wh... | 2006-01-20 09:10:00 | optical,binary,cataclysmic variable,variables |
699 | Classification of SN 2006H, a SN 1991bg-like Type Ia Supernova | The Nearby Supernova Factory: G. Aldering, S. Bailey, S. Bongard, D. Kocevski, B. C. Lee, S. Loken, P. Nugent, S. Perlmutter, R. Scalzo, R. C. Thomas, L. Wang, B. A. Weaver (Lawrence Berkeley National Laboratory, Berkeley, CA), N. Blanc, Y. Copin, E. Gangler, L. Sauge, G. Smadja (Institut de Physique Nucleaire de Lyon)... | The Nearby Supernova Factory reports that a spectrum (range 320-1000 nm) of supernova 2006H (IAUC # 8660 ), obtained January 20.3 UT under poor seeing conditions with the Supernova Integral Field Spectrograph on the University of Hawaii 2.2-meter telescope, shows it to be a Type Ia supernova. Its spectrum is similar to... | 2006-01-20 17:28:00 | infra-red,optical,ultra-violet,supernovae |
700 | RXTE PCA position of XTE J1701-462 | C. B. Markwardt (NASA/GSFC & U. Maryland), J. H. Swank (NASA/GSFC), D. Pereira (NASA/GSFC & L3) | The RXTE PCA observed the new transient XTE J1701-462 (Remillard et al, ATEL #696) on 20 Jan 2006 at 13:31 UTC for 1500 seconds. The observation included a PCA scan over the source. The 2-10 keV flux is approximately 900 mCrab.
The best fit position is R.A. = 17h00m56s, Decl. = -46d10'07" (J2000), with an estimated sy... | 2006-01-21 01:29:00 | x-ray,binary,transient |
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