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 |
|---|---|---|---|---|---|
15,202 | Gamma-ray flare of high-redshift blazar GB 1508+5714 detected by Fermi/LAT | A. Gokus (Remeis-Observatory/ECAP & JMU Wuerzburg), M. Kreter (NWU), M. Kadler (JMU Wuerzburg), F. McBride (PSU), S. Buson (JMU Wuerzburg), R. Ojha (NASA), E. Ros (MPIfR), J. Sinapius (DESY), on behalf of the LAT collaboration, M. Boettcher (NWU), J. Hodgson (KASI), J. Wilms (Remeis-Observatory/ECAP) | We report on the detection of a gamma-ray flare of the source 4FGL J1510.1+5702 (The Fermi-LAT collaboration 2020, ApJS, 247, 33) which is positionally consistent with the high-redshift (z=4.31; Hook et al., 1995, MNRAS, 273, L63) flat-spectrum radio quasar GB 1508+5714 at RA = 15:10:02.920, +57:02:43.367 (J2000; Gaia ... | 2022-02-06 00:24:00 | radio,gamma ray,agn,blazar,quasar,request for observations |
15,203 | Optical follow-up of GB 1508+5714 | Roberto Nesci (INAF/IAPS Roma Italy) | Following the announcement of a Gamma-ray flare of the Blazar GB 1508+5714 by Gokus et al. in ATel #15202, I observed the source with the 30cm telescope of the Foligno Observatory (K56) with an R (Cousins) filter and a QHY174M cooled camera. With an exposure time of one hour the source was detected at the image limit, ... | 2022-02-06 08:51:00 | optical,gamma ray,agn,blazar |
15,204 | Erratum ATel#15203 GB 1508+5714 | Roberto Nesci (INAF/IAPS Roma Italy) | The optical detection of the blazar GB 1508+5714 is erroneus, due to a hot pixel in the image. The source is actually below the image limit r=18.8 in the PanSTARRS scale. Sorry for the hurry. | 2022-02-06 16:56:00 | optical,gamma ray,blazar |
15,205 | XMM-Newton Observations of the TDE AT 2021ehb | J. M. Miller, M. T. Reynolds, A. Zoghbi (Univ. of Michigan); J. Drake (SAO); C. Miller, R. Mushotzky (Univ. of Maryland); L. Dai (Univ. of Hong Kong); P. Jonker (SRON); E. Ramirez-Ruiz (UCSC); B. Cenko (NASA/GSFC) | Based on the recent evolution of AT 2021ehb, we triggered an approved XMM-Newton ToO program to obtain spectra of this tidal disruption event. The first two in a sequence of observations were obtained on 27 January 2022 and 29 January 2022. Owing to limited visibility within each orbit, the EPIC-pn exposure time was 13... | 2022-02-06 22:46:00 | x-ray,agn,binary,black hole,star,tidal disruption event,transient,variables |
15,206 | Erratum: updated measurements for ATEL 15205 | J. M. Miller, M. T. Reynolds, A. Zoghbi (Univ. of Michigan); J. J. Drake (SAO); C. Miller, R. Mushotzky (Univ. of Maryland); L. Dai (Univ. of Hong Kong); P. Jonker (SRON); E. Ramirez-Ruiz (UCSC); B. Cenko (NASA/GSFC) | Based on the recent evolution of AT 2021ehb, we triggered an approved XMM-Newton ToO program to obtain spectra of this tidal disruption event. The first two in a sequence of observations were obtained on 27 January 2022 and 29 January 2022. Owing to limited visibility within each orbit, the EPIC-pn exposure time was 13... | 2022-02-07 04:50:00 | x-ray,agn,binary,black hole,star,tidal disruption event,transient,variables |
15,207 | Search for counterpart to IceCube-220205B with ANTARES | Alexis Coleiro (APC/Universite de Paris) and Damien Dornic (CPPM/CNRS) on behalf of the ANTARES Collaboration | Using data from the ANTARES detector, we have performed a follow-up analysis of the recently reported track event IceCube-220205B (GCN#31554). At the time of the alert, the reconstructed origin was -50.7 degrees below the horizon for ANTARES. No up-going muon neutrino candidate events were recorded within the 90% error... | 2022-02-07 05:33:00 | tev,neutrinos |
15,208 | The magnetic CV Swift J0614.0+1709 is not the optical counterpart of Fermi J0614+1713 | D. de Martino (INAF-Capodimonte Observatory, Naples, Italy), K. Mukai (NASA/GSFC and University of Maryland, Baltimore County, USA) | The Fermi-LAT Gamma-ray Transient Fermi J0614+1713 was detected over 3.5days starting from Jan 28, 2022 with an improved localization of 0.17deg centred at RA=93.48 and DEC=17.18 (ATels #15196, #15199) encompassing the magnetic CV SwiftJ0614.0+1709. We analysed the optical light curve of SwiftJ0614.0+1709 in the ASAS-S... | 2022-02-07 07:32:00 | optical,gamma ray,transient |
15,209 | MAXI J0709-159: Radio upper limit from MeerKAT | Lauren Rhodes, Jakob van den Eijnden, Rob Fender (University of Oxford), Patrick Woudt (University of Cape Town), James Miller-Jones (Curtin University), on behalf of the ThunderKAT collaboration | MAXI J0709-159 was detected by the MAXI/GSC nova alert system as an uncatalogued X-ray transient on 2022-01-25 10:42:29 (UTC, ATel #15178). ToO observations with NuSTAR performed on 2022-01-29 (Atel #15193) found that MAXI J0709-159 was spatially consistent with the Be star HD 54786 (aka Ly CMa), confirming it to be a ... | 2022-02-07 20:19:00 | radio,x-ray,gamma ray,binary,cataclysmic variable,gamma-ray burst,nova,star,supernovae,transient,variables |
15,210 | Fermi-LAT Gamma-ray Observations of IceCube-220205A | S. Garrappa (DESY-Zeuthen), S. Buson (Univ. of Wuerzburg), C. C. Cheung (Naval Research Laboratory) and J. Sinapius (DESY-Zeuthen) on behalf of the Fermi-LAT collaboration | We report an analysis of observations of the vicinity of the high-energy IC220205A neutrino event (GCN 31551) with all-sky survey data from the Large Area Telescope (LAT), on board the Fermi Gamma-ray Space Telescope. The IceCube event was detected on 2022-02-05 00:22:39.74 UTC (T0) with J2000 position RA = 216.12 (+2.... | 2022-02-08 01:07:00 | radio,gamma ray,neutrinos,agn,blazar,transient,request for observations |
15,211 | Fermi-LAT Gamma-ray Observations of IceCube-220205A and detection of Fermi J1420.7+1653 | S. Garrappa (DESY-Zeuthen), S. Buson (Univ. of Wuerzburg), C. C. Cheung (Naval Research Laboratory) and J. Sinapius (DESY-Zeuthen) on behalf of the Fermi-LAT collaboration | We report an analysis of observations of the vicinity of the high-energy IC220205A neutrino event (GCN 31551) with all-sky survey data from the Large Area Telescope (LAT), on board the Fermi Gamma-ray Space Telescope. The IceCube event was detected on 2022-02-05 00:22:39.74 UTC (T0) with J2000 position RA = 216.12 (+2.... | 2022-02-08 01:27:00 | gamma ray,neutrinos,agn,blazar,request for observations |
15,212 | Fermi LAT Detection of a New Gamma-ray Transient near the Galactic Plane: Fermi J0431+5458 | I. Mereu (INFN Perugia), C. C. Cheung (NRL), on behalf of the Fermi-LAT collaboratio | On February 4, 2022, the Large Area Telescope (LAT), one of the two instruments on the Fermi Gamma-ray Space Telescope, observed gamma-ray emission from a new transient source, Fermi J0431+5458. Preliminary analysis indicates the signal was significant in the single 6-hr interval from 06:00-12:00 UTC with 5-sigma signi... | 2022-02-08 09:57:00 | radio,gamma ray,transient |
15,213 | Fermi LAT detection of renewed gamma-ray activity from the high redshift FSRQ 4C +01.02 | I. Mereu (INFN Perugia), on behalf of the Fermi-LAT collaboration | The Large Area Telescope (LAT), one of the two instruments on the Fermi Gamma-ray Space Telescope, has observed increasing gamma-ray flux from a source positionally consistent with the high redshift flat spectrum radio quasar 4C +01.02, also known as PKS 0106+01 and OC 12 (R.A.: 17.1615 deg, Dec: 1.58342 deg, J2000.0, ... | 2022-02-08 17:12:00 | radio,gamma ray,agn,blazar,quasar,request for observations |
15,214 | MAXI observation of renewed X-ray activity from MAXI J1910-057 | M. Tominaga, S. Nakahira (JAXA), H. Negoro (Nihon U), M. Serino, S. Sugita (AGU), M. Nakajima, K. Kobayashi, K. Asakura, K. Seino (Nihon U.), T. Mihara, T. Tamagawa, J. Li, M. Matsuoka (RIKEN), T. Sakamoto, K. Komachi, H. Hiramatsu, A. Yoshida (AGU), Y. Tsuboi, W. Iwakiri, H. Kawai, Y. Okamoto, S. Kitakoga, J. Kohara ... | We report on a renewed X-ray activity from the black hole candidate MAXI J1910-057 detected with MAXI/GSC. The MAXI/GSC nova alert system detected an X-ray enhancement on 2022 February 4 17:41:38 UT. On 2022 February 5 (MJD 59615), it became clear that the X-ray emission was from the position consistent with the black ... | 2022-02-08 18:19:00 | x-ray,binary,black hole,nova,the sun,transient |
15,215 | The radio-bright blazar PKS 1741-03 coincident with the high energy neutrino alert IceCube-220205B | Y. Y. Kovalev (ASC Lebedev, MIPT, MPIfR), A. V. Plavin (ASC Lebedev, MIPT), S. V. Troitsky (INR), Yu. A. Kovalev (ASC Lebedev), T. Hovatta (FINCA), S. Kiehlmann (IoA FORTH, OVRO), I. Liodakis (FINCA), A. C.S. Readhead (OVRO, Caltech), A. K. Erkenov (SAO RAS), Y. V. Sotnikova (SAO RAS), M. Tornikoski (MRO), A. Lahteenma... | The recent GOLD neutrino alert IceCube-220205, GCN #31554, with an energy above 200 TeV is suggested to be associated with the blazar PKS 1741-03. We note that this is one of the brightest blazars on the radio sky and is one of only four blazars singled out by Plavin et al. (2020) as the most probable high energy neutr... | 2022-02-08 20:45:00 | radio,millimeter,gamma ray,tev,neutrinos,agn,blazar,quasar,variables |
15,216 | Optical spectrum of SN 2022blm with the Himalayan Chandra Telescope | Anirban Dutta, G. C. Anupama, D. K. Sahu, Pramod Kumar, Indian Institute of Astrophysics, Bengaluru, India | A spectrum of SN 2022blm (Zheng & Filippenko, TNS Astronomical Transient Report No. 135676) was obtained on 2022 February 07, 10:15:17 UT (JD 2459619.9) covering a wavelength range of 360 - 800 nm, using the HFOSC instrument on the 2-m Himalayan Chandra Telescope of the Indian Astronomical Observatory, Hanle. The spect... | 2022-02-09 23:54:00 | optical,supernovae,transient |
15,217 | Swift and NICER monitoring of AT2021ehb | Yuhan Yao (Caltech), Dheeraj R. Pasham (MIT), Keith C. Gendreau, Zaven Arzoumanian, Elizabeth C. Ferrara, S. Bradley Cenko (GSFC) | We report an update on the Swift and NICER observations of AT2021ehb/ZTF21aanxhjv --- a nearby tidal disruption event (TDE) at z=0.018 discovered by ZTF (Gezari et al. 2021). X-rays from AT2021ehb were first detected by Swift/XRT on July 1 2021 (Yao et al. 2021). Ever since then, Swift had been observing this object wi... | 2022-02-10 00:46:00 | x-ray,black hole,tidal disruption event,transient |
15,218 | Spectroscopic Classifications of Optical Transients with the Lick Shane telescope | K. Taggart, C. Rojas-Bravo, K. W. Davis, R. J. Foley (UCSC) | We report the following classifications of optical transients from spectroscopic observations with the Kast spectrograph on the Shane 3-m telescope at Lick Observatory. The targets were supplied by ATLAS, Gaia, and Pan-STARRS. All observations were made on 2022 Feb. 1 UT. Classifications were performed with SNID (Blond... | 2022-02-10 06:54:00 | optical,supernovae,transient |
15,219 | AMI-LA 15.5 GHz detection of MAXI J1910-057/Swift J1910.2-0546 | David Williams (JBCA/Manchester), Sara Motta (INAF), Lauren Rhodes (Oxford), Rob Fender (Oxford), Arash Bahramian (ICRAR), Dave Green (Cambridge), David Titterington (Cambridge), Greg Sivakoff (Alberta) | Following initial reports of activity from the candidate black hole MAXI J1910-057/Swift J1910.2-0546 on the MAXI Novae alerts page (http://maxi.riken.jp/alert/novae/9614527285/9614527285.htm) and later confirmed in ATel #15214 (Tominaga et al. 2022), we observed with the Arcminute Microkelvin Imager Large Array (AMI-L... | 2022-02-11 01:35:00 | radio,x-ray,binary,black hole,nova,transient |
15,220 | Optical follow-up of the high-redshift FSRQ 4C 01.02 after the Fermi LAT detected outburst | R. Bachev, A. Strigachev (IA-NAO, BAS) | Following the recent reports (ATel #15213) of enhanced gamma-ray activity of the high-redshift flat-spectrum radio quasar 4C 01.02 (PKS 0106+01), redshift z=2.1, we performed optical follow-up observations of this object. Using the 60-cm telescope of Belogradchik Observatory, Bulgaria, we obtained the following R-band ... | 2022-02-11 07:30:00 | radio,optical,gamma ray,blazar,quasar,star |
15,221 | Spectroscopic classification of transients with the Lick Shane telescope | K. W. Davis, J. Johnson, S. Tinyanont, R. J. Foley (UCSC), W. V. Jacobson-Galán (UCB), L. DeMarchi (Northwestern), L. Izzo (DARK/NBI) | We report the following classifications from spectroscopic observations with the KAST spectrograph on the Shane telescope obtained on 2022 February 6 UT. The targets were supplied by ATLAS. The classifications were performed with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).
Notes: When the redshift is given to 2 deci... | 2022-02-11 08:00:00 | optical,cataclysmic variable,supernovae,transient,variables |
15,222 | Quasi-simultaneous, full-Stokes millimeter radio observations of the blazar PKS 1741-03 with the IRAM 30m Telescope in the proximity of the neutrino event IceCube-220205B | Ioannis Myserlis (IRAM, MPIfR), Ivan Agudo (IAA-CSIC), Carolina Casadio (IA-FORTH), Clemens Thum (IRAM), Thalia Traianou (IAA-CSIC), Juan Escudero (IAA-CSIC), Joana Kramer (MPIfR) on behalf of the POLAMI collaboration | On February 5, 2022 the IceCube collaboration reported the GOLD event IC-220205B, in the proximity of the bright blazar PKS 1741-03 (GCN #31554). Three days later, we performed full-Stokes observations of this blazar at 3.5mm and 1.3mm with the IRAM 30m telescope, within the framework of the POLAMI monitoring program a... | 2022-02-11 21:50:00 | radio,millimeter,neutrinos,agn,blazar,quasar |
15,223 | Recovery of PSR J1713+0747 from a sustained pulse shape change | Ross J. Jennings (WVU) on behalf of the NANOGrav and CHIME/Pulsar Collaborations | As originally reported in ATel #14642 (see also ATels #14652, #14667), the millisecond pulsar PSR J1713+0747 underwent an abrupt change in pulse shape on 2021 April 17 (MJD 59321), with the new pulse shape being sustained for several months thereafter. We report new observations of PSR J1713+0747 which show that the pu... | 2022-02-14 22:32:00 | radio,pulsar |
15,224 | Spectroscopic observation of AT2021ybe by NUTS2 (NOT Un-biased Transient Survey-2) | N. Elias-Rosa, A. Pastorello, S. Benetti (INAF-OAPd), A. Reguitti (UNAB), E. Kankare (UTU), P. Lundqvist (Stockholm University), M. D. Stritzinger (Aarhus University) | The Nordic Optical Telescope (NOT) Unbiased Transient Survey (NUTS; ATel #8992) reports the spectroscopic classification of AT2021ybe (ATLAS21bhuy; Tonry et al. 2021, TNSTR 3059; also known as Gaia22acp and ZTF19aalwfly) associated with the radio source MG3 J035118+2925.
The observation was performed with the 2.56 m N... | 2022-02-15 03:03:00 | radio,optical,blazar,supernovae,transient |
15,225 | AT2019cuk/SDSSJ1430/ZTF18aarippg: High-cadence NICER and NuSTAR X-ray observations of the potential supermassive black hole binary with imminent merger (the tick-tock source) | Dheeraj Pasham (MIT), Andrew Fabian (U. Cambridge), Dom Walton (U. Hertfordshire), Keith Gendreau (NASA/GSFC), Zaven Arzoumanian (NASA/GSFC), Megan Masterson (MIT), Erin Kara (MIT), Ron Remillard (MIT) | The nuclear optical transient AT2019cuk/SDSSJ1430+2303/ZTF18aarippg was identified by ZTF on 30 March 2019. Based on its optical modulations with apparently decreasing period and unusual optical emission line shifts over the last 2.5 years, it has been suggested to be a supermassive black hole (SMBH) binary that could ... | 2022-02-17 11:59:00 | optical,x-ray,agn,binary,black hole,transient |
15,226 | Optical follow-up of MAXI J1910-057 | R. Hosokawa, K. L. Murata, M. Niwano, N. Ito, H. Takamatsu, Y. Imai, S. Sato, M. Takaku, R. Noto, R. Yamaguchi, Y. Yatsu, and N. Kawai (TokyoTech) report on behalf of the MITSuME collaboration | We report optical observation of black hole candidate MAXI J1910-057. The object renewed activity in X-ray is reported by MAXI (ATel #15214) and radio source associated with MAXI J1910-057 is also reported (ATel #15219). We observed this object on 2022 February 15 with the optical three color (g', Rc, and Ic) CCD camer... | 2022-02-17 13:34:00 | radio,optical,x-ray,binary,black hole,transient |
15,227 | Fermi-LAT detection of a bright gamma-ray flare from the blazar PKS B1406-076 | Dario Gasparrini (SSDC/INFN) on behalf of the Fermi-LAT Collaboration | The Large Area Telescope (LAT), one of the two instruments on the Fermi Gamma-ray Space Telescope, has observed gamma-ray flaring activity from a source positionally consistent with the blazar PKS B1406-076, also known as 4FGL J1408.9-0751 (The Fourth Fermi-LAT catalog, 4FGL; Abdollahi, S. et al. 2020, ApJS, 247, 33), ... | 2022-02-18 06:27:00 | gamma ray,agn,blazar,request for observations |
15,228 | MAXI/GSC observation of the bright outburst from Be/X-ray binary pulsar EXO 2030+375 | M. Nakajima (Nihon U.), T. Mihara (RIKEN), M. Serino (AGU), S. Nawa (Chuo U.) H. Negoro, K. Kobayashi, K. Asakura, K. Seino (Nihon U.), T. Tamagawa, J. Li, M. Matsuoka (RIKEN), T. Sakamoto, S. Sugita, K. Komachi, H. Hiramatsu, A. Yoshida (AGU), Y. Tsuboi, W. Iwakiri, H. Kawai, Y. Okamoto, S. Kitakoga, J. Kohara (Chuo U... | We report on another large outburst from Be/X-ray binary pulsar EXO 2030+375. The MAXI/GSC nova-alert system (Negoro et al. 2016) triggered on an X-ray activity from EXO 2030+375 on 12 February, 2022. The trigger date was at the peak orbital phase of the normal outburst of this source. However, the source flux continue... | 2022-02-18 19:35:00 | x-ray,binary,neutron star,nova,pulsar,star,transient |
15,229 | Optical observations of MAXI J1910-057/Swift J1910.2-0546 with ZTF | A. K.H. Kong (NTHU) on behalf of the Zwicky Transient Facility Collaboration | We report on the detection of the optical counterpart of the black hole candidate MAXI J1910-057/Swift J1910.2-0546 recently in an X-ray brightening with the Zwicky Transient Facility (ZTF; Bellm et. al 2019, Graham et. al 2019). ZTF detected the source (ZTF name: ZTF22aaaumci) as a transient on 2022-02-11 with a r mag... | 2022-02-19 11:48:00 | radio,optical,x-ray,binary,black hole,transient |
15,230 | NuSTAR observation of AT2022cmc, and joint spectral fitting with NICER | Yuhan Yao (Caltech), Dheeraj R. Pasham (MIT), Keith C. Gendreau (GSFC) | AT2022cmc/ZTF22aaajecp is a fast and red optical transient discovered by ZTF (Andreoni et al, GCN 31590) at a redshift of 1.193 (Tanvir et al, GCN 31602; Lundquist et al. GCN 31612). Hereafter we use t to denote rest-frame time since the first ZTF detection (i.e., 2022-02-11T10:42:40). The observed 0.3--6 keV X-ray lum... | 2022-02-21 10:40:00 | optical,x-ray,black hole,tidal disruption event,transient |
15,231 | MASTER possible optical counterpart of IceCube Alert 220220.60 / AMON NuEm-220220A | O. A. Gress (Lomonosov MSU, ISU), V. M.Lipunov (Lomonosov MSU), N. M. Budnev (Irkutsk State University, API), K. Zhirkov, A. Kuznetsov, P. Balanutsa, E. Gorbovskoy, A. Chasovnikov, G. Antipov, D. Vlasenko, V. Senik, Ya. Kechin, V. Topolev, A. Gabovich(Lomonosov MSU, SAI, Physics Department), L. Carrasco, J. R.Valdes, ... | MASTER Global Robotic Net (Lipunov et al. 2010, Advances in Astronomy, v.2010, 30L) started IceCube 20220220.60/ AMON NuEm-220220A alert (a coincidence alert from the IceCube online neutrino selection + HAWC daily monitoring analysis GCN #31615, https://gcn.gsfc.nasa.gov/other/icecube_220220A.gcn3 ) optical observation... | 2022-02-21 18:53:00 | optical,gamma ray,tev,vhe,uhe,neutrinos,agn,blazar,quasar,request for observations |
15,232 | High-cadence NICER X-ray observations of AT2022cmc/ZTF22aaajecpc: flux variability and spectral evolution suggest it could be a relativistic tidal disruption event | Dheeraj Pasham (MIT), Yuhan Yao (Caltech), Keith Gendreau (NASA/GSFC), Dan Perley (Liverpool John Moores University), Brad Cenko (NASA/GSFC), Zaven Arzoumanian (NASA/GSFC), and Elizabeth Ferrara (NASA/GSFC) | AT2022cmc/ZTF22aaajecp was identified by the Zwicky Transient Facility (ZTF) on 11 February 2022 10:42:40 UT as a fast and red transient (Andreoni et al, GCN 31590). A follow-up optical spectrum taken roughly six days after discovery revealed its redshift to be 1.193 (Tanvir et al, GCN 31602). This was independently co... | 2022-02-22 05:08:00 | radio,optical,x-ray,gamma ray,gamma-ray burst,tidal disruption event,transient,variables |
15,233 | Classification of Gaia Alerted QSO candidates | M. Dennefeld (IAP/Paris and Sorbonne University), T. Pursimo (NOT-LaPalma), M. Ward (Univ. of Durham), R. Ojha (NASA-HQ) | We present further classifications of Gaia Alerted (Hodgkin et al. 2021, A&A, 652, 76) QSO candidates, following previous ATel 15138 and ATel 15155. Spectra were obtained with ALFOSC at the Nordic Optical Telescope with a resolution of ~300, and a spectral range covering from 350 to 960 nm. | 2022-02-22 22:07:00 | optical,quasar |
15,234 | KITS Spectroscopic Classification of Transients with Keck II + NIRES | S. Tinyanont, K. W. Davis, M. J. Bustamante-Rosell, R. J. Foley (UCSC) | We report the following classifications from spectroscopic observations with the NIRES spectrograph on the Keck II telescope, made on 2022 Feb 22 UT as part of the Keck Infrared Transient Survey (KITS), a NASA Keck Strategic Mission Support program. The targets were supplied by ATLAS.
Notes: (1) AT2022bdw shows a cont... | 2022-02-23 00:52:00 | infra-red,supernovae,transient |
15,235 | NICER X-ray detection of ZTF22aabjpxh/AT2022cva are consistent with a GRB afterglow at z=0.293 | Dheeraj Pasham (MIT), Keith Gendreau (NASA/GSFC), Elizabeth Ferrara (NASA/GSFC), Anna Ho (UC Berkeley) | NICER observed the rapidly fading transient AT2022cva (Ho et al. GCN 31619) for 2.4 ks starting at 2022-02-21T22:56:03. X-rays are clearly detected above the background in the 0.3-5.0 keV band with a mean background-subtracted count rate of 0.92+-0.02 counts/seconds. We fit the 0.3-5 keV X-ray spectrum with a redshifte... | 2022-02-23 01:23:00 | x-ray,gamma ray,gamma-ray burst,transient |
15,236 | INTEGRAL/JEM-X detects XMMU J174445.5-295044 in a new outburst | J. Chenevez, S. Brandt, N. Lund, N. J. Westergaard (DTU Space), E. Kuulkers (ESA) on behalf of the INTEGRAL Galactic Bulge Monitoring team | A new season of INTEGRAL monitoring observations of the Galactic Bulge (ATel #438; Kuulkers et al. 2007, A&A, 466, 595) has started. The JEM-X instrument (3-25 keV) detects the symbiotic low-mass X-ray binary XMMU J174445.5-295044 (e.g. Bahramian et al. 2014, MNRAS 441, 640) in outburst during INTEGRAL revolutions 2470... | 2022-02-23 20:23:00 | x-ray,binary,neutron star,star,transient |
15,237 | Last year Swift monitoring of XMMU J174445.5-295044 during quiescence | F. Pellegatta (INAF-OA Brera, Universita` degli studi di Milano), S. Campana (INAF-OA Brera) | We monitored XMMU J174445.5-295044 bi-weekly during the observation of the Galactic center region with Swift (CBS monitoring campaign; Campana 2021, Atel #14438). The transient lies at the edge of one of our pre-selected pointings (ID 13799). XMMU J174445.5-295044 fell 8/13 within the Swift/XRT field of view. When with... | 2022-02-24 00:10:00 | x-ray,binary,neutron star,star,the sun,transient |
15,238 | Swift GC monitoring program detection of a new outburst from the faint X-ray transient CXOGC J174538.0-290022 | Mark Reynolds (U. Michigan), Rudy Wijnands (U. Amsterdam), Nathalie Degenaar (U. Amsterdam), Jon Miller (U. Michigan), Jamie Kennea (Penn State) on behalf of a larger collaboration. | Swift observations of the Galactic center (Degenaar et al. 2013, 2015) have resumed after the solar constraint period and the recent resumption of Swift observations (GCN #31603). In a 0.84 ks XRT observation on 2022 Feb 23rd (01:20 UT), excess point like X-ray emission consistent with the position of the known faint X... | 2022-02-24 09:44:00 | radio,infra-red,x-ray,black hole,neutron star,star,transient |
15,239 | AT2022cmc/ZTF22aaajecpc: IceCube neutrino search | Alex Pizzuto (UW-Madison), Marcos Santander (UAlabama) for the IceCube Collaboration | The IceCube Collaboration (http://icecube.wisc.edu/) reports: IceCube has performed a search for track-like muon neutrino events arriving from the direction of the candidate relativistic tidal disruption event AT2022cmc/ZTF22aaajecpc (ATel #15232) which was originally identified as a fast red transient by ZTF (https://... | 2022-02-25 08:25:00 | tev,neutrinos,tidal disruption event,transient |
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