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we discuss some aspects of sousa et al. [1, 2] concerning two mechanisms of gravitational wave (gw) emission in fast-spinning white dwarfs (wds): accretion of matter and magnetic deformation. in both cases, the gw emission is generated by an asymmetry around the rotation axis of the star. however, in the first case, th... | gravitational waves from fast-spinning white dwarfs |
mission paves the way for planned €1-billion space observatory. | successful test drive for space-based gravitational-wave detector |
searches for continuous gravitational waves, such as those emitted by rapidly spinning non-axisymmetric neutron stars, are degraded by the presence of narrow noise ``lines'' in detector data. these lines either reduce the spectral band available for analysis (if identified as noise and removed) or cause spurious outlie... | spectral comb mitigation to improve continuous-wave search sensitivity in advanced ligo |
orbiting compact binaries - such as binary black holes, binary neutron stars and neutron star-black hole binaries - are among the most promising sources of gravitational waves observable by ground-based interferometric detectors. despite numerous sophisticated engineering techniques, the gravitational wave signals will... | topics in the detection of gravitational waves from compact binary inspirals |
crystal eye idea comes from the analysis of two gravitational waves events: gw170817 and gw190425. both events were referred to neutron star mergers. in the first case fermi-gbm and integral claimed the detection of a short gamma ray burst (grb 170817a) and in order to follow up and target the gw electromagnetic counte... | the crystal eye x and gamma-ray detector for space missions |
the space-borne gravitational wave (gw) detectors, e.g., lisa, tianqin, taiji, are designed to measure the gw in the low-frequency regime (0.1 mhz to 1 hz). the arm length mismatches in the flying constellation prevent exact laser phase noise cancellation. for a typical michelson interferometric design such as lisa, th... | suppression of laser phase noise by using updated common arm locking |
subthreshold extreme mass ratio inspirals (emris), while not individually resolvable, collectively will constitute a noise source for lisa, the future space-based gravitational wave detector. previous characterizations of this noise source have used a newtonian order approximation. we seek to improve this estimate by u... | highly eccentric emri confusion noise in lisa |
quantum sensors based on cold atoms offer the opportunity to perform highly accurate measurements of physical phenomena related to time, gravity and rotation. the deployment of such technologies in the microgravity environment of space may enable further enhancement of their performance, whilst permitting the detection... | cold atom quantum sensors for space |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s190901ap in a time range of 1000 seconds [3] centered on the alert event time (2019-09-01 23:22:41.838 utc to 2019-09-01 23:39:21.838 utc) have been performed. during this time pe... | ligo/virgo s190901ap: upper limits from icecube neutrino searches |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s190822c in a time range of 1000 seconds [3] centered on the alert event time (2019-08-22 01:21:39.589 utc to 2019-08-22 01:38:19.589 utc) have been performed. during this time per... | ligo/virgo s190822c: upper limits from icecube neutrino searches |
fluctuations of the earth gravity field can impact ultra precise experiments investigating general relativity such as gravitational waves detectors. indeed, such experiments monitor distance between free falling test masses, which positions are affected by local gravity changes. these gravity fluctuations may come from... | study of space-time variations of local gravity field for the miga antenna and for future low frequency gw detectors |
with the advent of gravitational wave (gw) observation, a new avenue has formed to study black hole (bh) binary formation and evolution. in order to better predict and interpret the gw observational results, it is important to disentangle different formation channels. here, we study the encounters of two stellar mass b... | bursts of gws due to stellar mass bh scattering in agn disk |
globular clusters are tightly bound groups of stars known to host robust populations of compact objects including roughly hundreds to thousands of stellar-mass black holes. over time these black holes sink to the center of their host cluster and interact with each other dynamically which leads to the formation of black... | detecting black hole binaries in globular clusters of nearby galaxies with lisa |
last year, the european virgo detector achieved the first detection of a gravitational wave. the advanced virgo detector joined ligo in the second observation run for a period of 25 days. several detections were made. the detected waveform of event gw170814 match the predictions of general relativity for the inspiral a... | status of the virgo collaboration in europe |
as ligo prepares for its third observing run, the expectation of further gravitational wave events provide the promise of further tests of general relativity. one type of test is to observe higher-order modes, beyond the dominant 22-mode, of a gravitational waveform during the ringdown stage of two merged black holes. ... | optimizing ligo with lisa forewarnings to improve black-hole spectroscopy |
black-hole superradiance may make it possible to detect or constrain yet-undiscovered ultralight bosons using gravitational waves. in this talk, i will describe how we may achieve this with ground-based detectors by searching for continuous gravitational waves from known black holes. this includes black holes in x-ray ... | directed searches for gravitational waves from ultralight bosons |
millimetron space mission (mso) is based on a cooled (<10 k) 10 m diameter deployable telescope which will be diffraction for the wavelengths staring 70 micron. equipped with the state of art cryogenically cooled instrumentation mso offers unique discovery space for astrophysics, addressing major open questions, suc... | millimetron space observatory: a large aperture space telescope |
direct detections of gravitational wave (gw) by using a long-baseline laser interferometer have been tried in many countries. in japan, a space-gw detector named decigo (deci-hertz interferometer gravitational wave detector), and its milestone mission dpf (decigo pathfinder) has been promoted. we have developed a space... | highly frequency-stabilized laser for space gravitational wave detector decigo/dpf |
the advanced ligo detectors commenced observations in september of 2015, while advanced virgo will come on-line in 2016. they will approach their target sensitivities over the subsequent years. a major goal for ligo and virgo will be to detect or set limits on a stochastic background of gravitational waves. a stochasti... | strategies and goals for stochastic gravitational wave background searches with advanced ligo and advanced virgo |
a search for track-like muon neutrino events detected by icecube consistent with the sky localization of the low-significance gravitational wave candidate s230628aj in a time range of 1000 seconds centered on the alert event time (2023-06-28 16:34:04 utc to 2023-06-28 16:50:44 utc) has been performed [1,2]. during this... | ligo/virgo/kagra low-significance gravitational wave candidate s230628aj: one counterpart neutrino candidate from icecube neutrino searches |
a search for track-like muon neutrino events detected by icecube consistent with the sky localization of the low-significance gravitational wave candidate s230701z in a time range of 1000 seconds centered on the alert event time (2023-07-01 06:28:35 utc to 2023-07-01 06:45:15 utc) has been performed [1,2]. during this ... | ligo/virgo/kagra low-significance gravitational wave candidate s230701z: one counterpart neutrino candidate from icecube neutrino searches |
the high energy rapid modular ensemble of satellites (hermes) is a constellation of 3u nano-satellites for high energy astrophysics. the hermes nano-satellites' components have been designed, verified, and tested to detect and localize energetic astrophysical transients, such as short gamma-ray bursts (grbs), which are... | an effective sensor architecture for full-attitude determination in the hermes nano-satellites |
gravity waves (gws) are one of the most important coupling mechanisms in the atmosphere. they couple different compartments of the atmosphere. within the gw-lcycle (gravity wave life cycle) project, an aircraft campaign has been performed in winter 2015/2016 to study the propagation of gravity waves. during this campai... | propagation of mesoscale gravity waves above the scandinavian mountains as observed by gloria and airs |
this paper concerns a feasibility study on a 2nd order spherical, or three-dimensional, angular momentum and linear momentum detector for photonic radiation applications. it has been developed in order to obtain a paraxial approximation of physical events observed under coulomb gauge condition, which is essential to co... | second-order spherical optoelectronic detector for 3d multi-particles wave emission and propagation in space time domains |
we describe the way gravitational waves interact with matter and with test light beams. we pay attention to the case of ground-based detectors, then to space-borne. we develop a formalism allowing to treat complex optical systems such as the large scale inteferometric detectors presently operating or nearly operating i... | theory of gravitational wave detection |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s191105e in a time range of 1000 seconds [3] centered on the alert event time (2019-11-05 14:27:01.933 utc to 2019-11-05 14:43:41.933 utc) have been performed. during this time per... | ligo/virgo s191105e: upper limits from icecube neutrino searches |
the transient high-energy sky and early universe surveyor (theseus) is a mission concept developed in the last years by a large european consortium and currently under study by the european space agency (esa) as one of the three candidates for next m5 mission (launch in 2032). theseus aims at exploiting high-redshift g... | the transient high-energy sky and early universe surveyor (theseus) |
future space-based gravitational-wave interferometers such as lisa will offer rich opportunities to study novel gravitational-wave sources that are not observable from ground-based detectors. they will also facilitate detailed multi-wavelength studies of the inspiral phase of stellar origin black hole binaries whose me... | time-frequency analysis for lisa black hole binaries |
the european space agency (esa) last week revealed the science themes it wants to pursue in billion-euro missions to be launched between 2035 and 2050. they include taking a close look at ocean-bearing moons around jupiter and saturn, dissecting the atmospheres of temperate exoplanets, and using new tools to study the ... | decades ahead, europe picks goals for big space missions |
scattering events around a supermassive black hole (smbh) will occasionally toss a stellar-mass compact object (co) into an orbit around the smbh, beginning what is known as an extreme mass ratio inspiral (emri). the early stages of such a highly eccentric emri will not produce detectable gravitational waves because th... | improved modeling of emri signal confusion noise for lisa |
the laser interferometer space antenna (lisa) mission is a space-borne observatory designed to detect and characterize gravitational wave sources inaccessible to ground-based detectors. the mission relies on laser interferometry to measure changes in space-time. in this context, non-avoidable noise sources within the l... | time-delay interferometry infinity for tilt-to-length noise estimation in lisa |
the upcoming space-borne gravitational wave detector laser interferometer space antenna (lisa) is primarily sensitive to extreme mass ratio inspirals (emri) where the mass ratio between two black holes is higher than 105. for the matched filtering process, we need a highly accurate template wave bank. in this talk, i w... | a discontinuous galerkin method for the distributionally-sourced s=0 teukolsky equation |
in the future space-borne gravitational wave (gw) detector, the optical transponder scheme, i.e., the phase-locking scheme, will be utilized so as to maintain the signal-to-noise ratio (snr). in this case, the whole constellation will share one common laser equivalently, which enables the considerable simplification of... | weak-light phase-locking time delay interferometry with optical frequency combs |
the success of ground based gravitational wave detectors has opened up new fields of astrophysical study with signals directly from black hole binaries and black hole-neutron star mergers providing the first data on the demography of stellar mass black holes. other frequency ranges, both higher and lower than the 20-20... | gravitational wave science from space |
stellar-mass binary black holes will sweep through the frequency band of the laser interferometer space antenna (lisa) for months to years before appearing in the audio-band of ground-based gravitational-wave detectors. one can expect several tens of these events up to a distance of 500 mpc each year. the lisa signal-t... | archival searches for stellar-mass binary black holes in lisa data |
the laser interferometer space antenna (lisa) is a space-based gravitational wave (gw) detector sensitive at lower frequencies than ligo. the dominant galactic sources in the lisa band will be binary stars with orbital periods <60min, so called ultracompact binaries (ucb). they are a rare and exotic class of binary ... | galactic lisa sources and their potential for multi-messenger and multi-wavelength studies |
atom interferometers have evolved into a competitive tool for inertial sensing and tests of fundamental physics. most proposals for the detection of dark matter or gravitational waves with atom interferometers rely on differential measurements of two spatially separated interferometers, operated with the same diffracti... | single-photon transitions for atom-interferometric detectors |
magis-100 is a 100-meter-baseline atom interferometer which will search for wavelike dark matter, serve as a prototype gravitational wave detector in the 0.3-3 hz frequency range, and realize large scale quantum superpositions. the interferometer will be assembled in the vertical minos access shaft at fermilab, where a... | laser beam delivery for 100-meter baseline clock atom interferometry (magis-100) |
we discuss the idea of a measurement that, making use of data from space interferometers, could detect the gravito-magnetic field generated by the rotation of the milky way, including the possible contribution of the dark matter halo. the galactic signal would be superposed to the gravito-magnetic field of the sun. the... | detecting gravitomagnetism with space-based gravitational wave observatories |
free space coupled, ingaas pin + tia quad photoreceivers enable multiple space applications that require differential wavefront sensing, such as gravitational wave detectors, and position sensing and tracking, for example inter-satellite optical communication links. optical crosstalk between the individual quadrants of... | optical crosstalk and ancillary measurements of free space coupled: ingaas quad photoreceivers exposed to protons and alpha particles |
as pairs of black holes inspiral and merge, they create gravitational waves. these waves hold information about the environment in which the black holes are embedded: using future space-based gravitational-wave detectors, it will be possible to distinguish what kind of environment that is. | gravitational waves could reveal the environment of inspiralling black holes |
cryogenic technology is one of the key technologies for the next generation of laser interferometer gravitational-wave detector. the japanese gravitational wave interferometer kagra (kamioka gravitational wave detector), as the pathfinder of this technology, will operate in a 20~k cryogenic environment and use a sapphi... | optical characterization of sapphire test mirror in kagra gravitational wave detector |
a significant number of stellar-mass black-hole (bh) binaries may merge in galactic nuclei or in the surrounding gas disks. with purposed space-borne gravitational-wave observatories, we may use such a binary as a signal carrier to probe modulations induced by a central supermassive bh (smbh), which further allows us t... | direct determination of supermassive black hole properties with gravitational-wave radiation from surrounding stellar-mass black hole binaries |
following the selection of the gravitational universe for the third large mission (l3) by esa and nasa's interest in partnering with esa, we are now about a dozen years away from the earliest possible launch of the first space-based observatory. the idea of such an observatory was first formulated about a dozen years a... | the path to a gravitational-wave detector in space |
the calorimetric electron telescope (calet) cosmic ray detector on the international space station (iss) has been in operation since its launch in 2015. the main instrument, the calet calorimeter, is monitoring the gamma ray sky from 1 gev up to 10 tev with a field-of-view of about 2 sr for more than five years. in thi... | calet search for gamma-ray counterparts of gravitational wave events |
distributed space architectures are the frontier of innovation in space sciences. they could allow measurements impossible or hardly achievable for monolithic systems, such as time evolving geophysical events. a multipoint nanosatellite architecture would open the way to the development of a new kind of advanced earth ... | cses1-2, towards a satellite constellation for space borne rapid movements observations |
the sensitivities of current gravitational-wave detectors are limited around signal frequencies of 100 hz by mirror thermal noise. one proposed option to reduce this thermal noise is to operate the detectors in a higher-order spatial laser mode. this operation would require a high-power laser input beam in such a spati... | high-power laser beam in higher-order hermite-gaussian modes |
gravity waves play a major role in mesospheric and lower thermospheric (mlt) dynamics and global observations of gravity waves in this region are of particular interest. to this end, a spatial heterodyne interferometer (shi) is used to retrieve temperature profile which can be subsequently used to determine wave parame... | retrieval of gravity wave parameters using cubesats |
by measuring the distance between two satellites orbiting the earth with microwaves, the gravity recovery and climate experiment (grace) mission has successfully monitored the gravity profile of the earth for over a decade. grace observed the earth's environment due to shifting water masses, giving insight into global ... | lisa technology demonstration and flight experience from grace follow-on laser ranging interferometer |
searches for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s231029y in a time range of 1000 seconds centered on the alert event time (2023-10-29 11:06:48.000 utc to 2023-10-29 11:23:28.000 utc) have been performed [1,2]. during this time period ... | ligo/virgo/kagra s231029y: one counterpart neutrino candidate from icecube neutrino searches |
hsp was selected (2018) for a smallsat mission concept study under the nasa astrophysics science smallsat study (as3) program and is now proposed (salmon-mo) for a 1-2 year time domain astrophysics mission for 3-200 kev high-cadence and resolution studies of accreting black holes (bhs). hsp is a 25° × 25° (fwhm; 0.2sr)... | high resolution energetic x-ray imager smallsat pathfinder (hsp) to enable 4pixio |
gravitational wave (gw), predicted by a. einstein in his general theory of relativity, is temporal variation of spatial distortion caused from the change of enormous mass such as inspiral and merger of neutron star binaries, black hole binaries, explosion of supernovae, and inflation in early universe. | developments of highly frequency and intensity stabilized lasers for space gravitational wave detector decigo/pre-decigo |
a search for track-like muon neutrino events detected by icecube consistent with the sky localization of the low-significance gravitational wave candidate s231025a in a time range of 1000 seconds centered on the alert event time (2023-10-25 03:03:04 utc to 2023-10-25 03:19:44 utc) has been performed [1,2]. during this ... | ligo/virgo/kagra s231025a: two counterpart neutrino candidates from icecube neutrino searches |
it is widely predicted that dense stellar clusters can act as a factory for compact binary mergers. it remains unknown, however, whether the compact binaries observed via the advanced ligo, virgo, and kagra gravitational-wave detectors predominantly originate from clusters, isolated stellar binaries, or other environme... | gravitational-wave observations and the population of compact binaries |
a search for track-like muon neutrino events detected by icecube consistent with the sky localization of the low-significance gravitational wave candidate s231106y in a time range of 1000 seconds centered on the alert event time (2023-11-06 06:48:08 utc to 2023-11-06 07:04:48 utc) has been performed [1,2]. during this ... | ligo/virgo/kagra s231106y: one counterpart neutrino candidate from icecube neutrino searches |
compact object binaries including a white dwarf are unique among gravitational-wave sources because their evolution is governed not just by general relativity, but also by mass transfer and tides. while the black hole and neutron star binaries observed with ground-based gravitational-wave detectors are driven to inspir... | probing the effect of tides in outspiralling double white dwarf binaries with lisa |
airbus defence and space gmbh currently investigates a number of promising payload concepts for interferometric space-bourne gravitational wave observatories; focusing on beam pointing for the laser links.1 to this end, one of the setups implements "in-field pointing (ifp)", which is a payload design employing the actu... | lisa optical metrology: tilt-to-pathlength coupling effects on the picometer scale |
future space-based gravitational-wave detectors could probe the physics of accretion disks surrounding massive black holes. | accretion explored through gravitational waves |
long-lived gravitational wave (gw) transients have received interest in the last decade, as the sensitivity of ligo and virgo increases. such signals, lasting between 10 and 1000s, can come from a variety of sources, including accretion disk instabilities around black holes, binary neutron stars post-merger, core-colla... | searches for long-duration gravitational wave transients in ligo and virgo data |
angular misalignment of one of the interfering beams in laser interferometers can couple into the interferometric length measurement and is called tilt-to-length (ttl) coupling in the following. in the noise budget of the planned space-based gravitational-wave detector evolved laser interferometer space antenna (elisa)... | experimental demonstration of reduced tilt-to-length coupling by using imaging systems in precision interferometers |
with the detection of gravitational wave emissions from from merging compact objects, it is now more important than ever to effectively mine the data-set of gamma-satellites for non-triggered, short-duration transients. hence we developed a new method called the automatized detector weight optimization (adwo), applicab... | a new way of searching for transients: the adwo method and its results |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s191129u in a time range of 1000 seconds [3] centered on the alert event time (2019-11-29 13:32:09.197 utc to 2019-11-29 13:48:49.197 utc) have been performed. during this time per... | ligo/virgo s191129u: upper limits from icecube neutrino searches |
state-of-the-art detectors are necessary to measure very tiny variations of gravity produced by spiraling neutron stars, merging black holes and moving tectonic plates. we are developing a superconducting gravity gradiometer and aim to achieve 0.1 me hz-1/2 (1 e ≡ 10-9 s-2) in the frequency band of 0.1 mhz to 0.1 hz. t... | superconducting pancake coil fem analysis for very low frequency levitated gravity accelerometers |
gravitational waves (gws) detection have received significant progress in recent years. with the development of noise suspension techniques for gws detection, this research aimed at facilitating relevant research and introduces classic methods of gw detection, such as weber bar, ground laser interferometer, and space l... | review of noise suppressing technologies for gravitational-waves detection |
globular clusters and galactic nuclei contain very dense stellar-mass black holes (bhs), and when two bhs approach each other, they could form highly eccentric orbits and emit gravitational waves (gws). the detection of such signals will contribute to further research on bh physics and enhance our understanding of bh p... | the detection of gravitational waves from black hole encounter |
we have performed a search for track-like muon neutrino events detected by icecube consistent with the sky localization of the low-significance gravitational-wave candidate event s231018cb in a time range of 1000 seconds centered on the alert event time (2023-10-18t23:40:06 utc to 2023-10-18t23:56:46 utc) [1,2] . durin... | ligo/virgo/kagra s231018cb: one counterpart neutrino candidate event from an icecube neutrino search |
a search for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s230522a in a time range of 1000 seconds centered on the alert event time (2023-05-22 09:29:45.000 utc to 2023-05-22 09:46:25.000 utc) have been performed [1,2]. during this time period ... | ligo/virgo/kagra s230522a: 2 counterpart neutrino candidates from icecube neutrino searches |
recent gravitational wave observations have allowed stringent new constraints on modifications to general relativity in the extreme gravity regime. although these observations were consistent with compact binaries with no orbital eccentricity, gravitational waves emitted in mildly eccentric binaries will probably be de... | eccentricity matters: improvement of constraints on jordan-brans-dicke-fierz theory with gravitational waves from eccentric compact binary inspirals |
a search for track-like muon neutrino events detected by icecube consistent with the sky localization of the low-significance gravitational wave candidate s230908b in a time range of 1000 seconds centered on the alert event time (2023-09-08 03:41:42 utc to 2023-09-08 03:58:22 utc) has been performed [1,2]. during this ... | ligo/virgo/kagra s230908b: one counterpart neutrino candidate from icecube neutrino searches |
icecube has performed an additional search for track-like muon neutrino events consistent with the sky localization of the joint skymap for low significance gravitational-wave candidate s230619bd and gbm-230619 (https://gcn.nasa.gov/circulars/34054) in a time range of -0.1 day, +14 days from the gw alert event time (20... | lvk s230619bd/gbm-230619: upper limits from a two-week icecube neutrino search |
we have performed a search for track-like muon neutrino events detected by icecube consistent with the sky localization of the low-significance gravitational-wave candidate event s231205c in a time range of 1000 seconds centered on the alert event time (2023-12-05t00:49:30 utc to 2023-12-05t01:06:10 utc) [1,2]. during ... | ligo/virgo/kagra s231205c: one counterpart neutrino candidate event from an icecube neutrino search |
in tianqin spaceborne gravitational-wave detectors, the stringent requirements on the magnetic cleanliness of the test masses demand the high resolution ground-based characterization measurement of their magnetic properties. here we present a single frequency modulation method based on a torsion pendulum to measure the... | measurement of remanent magnetic moment using a torsion pendulum with single frequency modulation method |
as a central payload of tianqin space-borne gravitational wave detector, inter satellite laser interferometer allows to measure distance variance with extremely high precision. the readout system, or phasemeter, is often based on all digital phase locked loop in an fpga. however, sampling jitter is one of the main inev... | study on picometer-level laser interferometer readout system in tianqin project |
we compute the emission of gravitational waves of white dwarf dynamical interactions and close encounters in dense stellar environments and we compare it with the sensitivity curves of planned space-borne gravitational wave detectors, like elisa and alia. we find that for the three possible outcomes of these interactio... | the gravitational wave emission of white dwarf dynamical interactions |
the advanced ligo and virgo detectors will provide sensitivity to gravitational waves down to frequencies of 10 hz. the merger frequency of binary black hole (bbh) systems scales inversely with the total mass, meaning that this sensitivity improvement will allow for detection and measurement of more massive binaries. i... | detection and measurement of heavy black hole binaries |
the polarization modulator unit for the low-frequency telescope in litebird employs an achromatic half-wave plate (ahwp). it consists of five layers of a-cut sapphire plate, which are stacked based on a pancharatnam recipe. in this way, the retardance of the ahwp is a half-wave over a bandwidth of 34 to 161 ghz. the di... | mechanical strength and millimeter-wave transmittance spectrum of stacked sapphire plates bonded by sodium silicate solution |
extreme mass ratio inspirals (emri) will be an important astrophysical source for the upcoming gravitational wave detector laser interferometer space antenna (lisa). emri systems are characterized by mass ratios greater than 104 and will be in the detector's sensitive band for hundreds of thousands of orbital cycles. n... | a discontinuous galerkin method for the distributionally-sourced s=0 teukolsky equation |
intermediate mass black holes (imbhs) are conjectured to occupy the mass space between stellar-mass and super-massive black holes, roughly between 100 and 105 solar masses. the coalescence and merger of imbh binaries with masses of a few hundred solar masses is an intriguing possible source of gravitational waves for a... | searching for intermediate mass black holes with advanced ligo |
searches for compact binary signals in gravitational wave data are continually progressing towards providing results in the lowest latency possible. rapid identification of candidate events in these searches is crucial for a number of reasons, including (i) maximizing the probability of associating the event with its e... | expanding the search parameter space for low latency compact binary searches |
a search for track-like muon neutrino events detected by icecube consistent with the sky localization of the low-significance gravitational wave candidate s230619bg in a time range of 1000 seconds centered on the alert event time (2023-06-19 23:32:47 utc to 2023-06-19 23:49:27 utc) has been performed [1,2]. during this... | ligo/virgo/kagra s230619bg: one counterpart neutrino candidate from icecube neutrino searches |
the swift-bat/guano, icecube, and gcn teams are pleased to announce the availability of new gcn notice types via the new gcn in json format. json format notices can be streamed via kafka (https://gcn.nasa.gov/quickstart). these new notice types are not available via gcn classic. swift-bat/guano: gcn.notices.swift.bat.g... | new swift-bat/guano and icecube notices available via gcn kafka |
supermassive black holes (smbhs) will occasionally capture a stellar-mass compact object (co) into a highly eccentric orbit, this is known as an extreme mass ratio inspiral (emri). these events are prime sources for the proposed space-based gravitational wave detector lisa. however, highly eccentric emris produce signi... | generating emri waveforms for highly eccentric equitorial orbits in lisa signal confusion noise |
simultaneous observations of an electromagnetic counterpart from gravitational wave (gw) sources is a powerful tool to gain a complete understanding of the astrophysical event, as well as to support gw data analysis. this proceeding summarizes the expected electromagnetic counterpart of gw sources detectable by the adv... | electromagnetic follow-up of gravitational wave sources and the case of gw150914 |
the advent of sensitive gravitational wave (gw) detectors, coupled with wide-field, high cadence optical time-domain surveys, raises the possibility of the first joint gw-electromagnetic (em) detections of core-collapse supernovae (ccsne). for targeted searches of gws from ccsne, the sensitivity of the search is increa... | from dreams to future discoveries: advancing core-collapse supernova science |
the experimental investigation of fundamental theories of physics nowadays is more and more related to the development of new cutting-edge technologies. we are exploiting the most advanced techniques used in gravitational waves detectors to search for quantum fluctuations of space-time as predicted by some theories of ... | quantum technologies for quantum gravity phenomena and other fundamental physics research |
the near infrared airglow camera (nirac) was the first high-sensitivity, high-resolution imager to observe the oh airglow from space. deployed to the international space station from may 2019 to november 2021, nirac observed atmospheric gravity wave (agw) signatures over much of the globe. nirac bandpass was 1.5 to 1.7... | atmospheric gravity wave spectra from the near infrared airglow camera (nirac) on the iss |
when galaxies merge, what happens to the massive black holes at their centers? todays article explores the math behind the merger.when galaxies merge, it shakes up star formation and sets the stage for a massive black hole merger. [nasa, esa, the hubble heritage (stsci/aura)-esa/hubble collaboration, and a. evans (univ... | merging black holes vs. gas and stars |
our understanding of the universe stands on the validity of einstein gravity at the largest scales. despite its tremendous success in laboratory experiments and solar system tests, we still lack of a precise knowledge of gravity at the cosmological regime. in this talk i will present how we can achieve this using gravi... | cosmological probes of gravity: the gravitational wave perspective |
esa's "laser interferometer space antenna", short: lisa, mission with its planned launch in 2034 will be the first space based gravitational wave observatory. like the famous ground based detectors (e.g. ligo, virgo, geo600), lisa will sense gravitational waves as phase shifts in its interferometer readout signals, but... | lisa: gravitational wave observation from space |
juno's imaging system, junocam, acquired moderate- to high-resolution color images of jupiter over all latitudes in nearly all of its orbits to date. ¬¬the moderate-resolution polar images and high-resolution images at lower latitudes show an atmospheric circulation much more complex than previously detected. junocam h... | junocam imaging of jupiter through 28 perijoves |
ligo and virgo have been consistently detecting compact binary coalescences, providing us with incredibly valuable information about gravity in the strong-field regime. however, their limited sensitivity makes it challenging to constrain the parameters of the merging system. future space-based and third-generation grou... | assessing the readiness of numerical relativity for future gravitational wave detections |
i present updates on an analytic approximation method for use in computing orbits and waveforms for extreme mass ratio inspirals (emris). emris are of particular interest for future space-based gravitational wave detectors, such as (e)lisa. such gravitational wave detectors will depend on precise predictions of the wav... | progress toward post-adiabatic emri waveforms using the multiscale approximation |
gravity waves (gws) are one of the most important coupling mechanisms in the atmosphere. they couple different compartments of the atmosphere. the gw-lcycle (gravity wave life cycle) project aims on studying the excitation, propagation, and dissipation of gravity waves. an aircraft campaign has been performed in winter... | first 3d measurements of temperature fluctuations induced by gravity wave with the infrared limb imager gloria |
since its first demonstration in 1991, atomic interferometry (ai) has shown to be an extremely performing probe of inertial forces. more recently, ai has revealed sensitivities to acceleration or rotation competing with or even beating state-of-the art sensors based on other technologies. the high stability and accurac... | the matter-wave laser interferometer gravitation antenna : a new tool for underground geophysical studies |
we report the detection of ten new binary black hole merger signals in the publicly released data from the the first half of the third observing run of advanced ligo and advanced virgo (o3a). the mergers were discovered using an updated version of the search pipeline described in venumadhav et al. (phys. rev. d101, 083... | ten new binary black hole mergers in the o3a observing run of advanced ligo and advanced virgo |
in this talk, we shall present our recent studies on gravitational waves (gws) produced by remote compact astrophysical sources. to describe such gws properly, we introduce three scales, the typical wavelength of gws, the scale of the cosmological perturbations, and the size of the observable universe. for gws to be de... | propagation of gravitational waves in an inhomogeneous universe |
we present a novel machine-learning approach to estimate selection effects in gravitational-wave observations. using techniques similar to those commonly employed in image classification and pattern recognition, we train a series of neural-network classifiers to predict the ligo/virgo detectability of gravitational-wav... | can a computer learn if ligo and virgo will observe gravitational waves? |
gecam (gravitational wave high-energy electromagnetic counterpart all-sky monitor) is a space mission designed to detect gravitational wave gamma-ray bursts and other high-energy transient sources in the energy range 6kev to 5mev. it consists of two satellites, each containing 25 gamma-ray detectors (grd) to implement ... | energy response and in-flight background simulation for gecam |
magis-100 is a 100 meter baseline atom interferometer which will search for wavelike dark matter, serve as a prototype gravitational wave detector in the 0.3-3 hz frequency range, and realize large scale quantum superpositions. the interferometer will be assembled in the vertical minos access shaft at fermilab, where t... | a tunable, high power interferometer beam with reduced pointing fluctuations and wavefront aberrations for 100-meter baseline atom interferometry (magis-100) |
the space-based gravitational wave observatory lisa has been designed to sense waves at millihertz frequencies coming from galactic binaries and extreme mass-ratio inspirals, among other sources. a technology-demonstration mission, lisa pathfinder, was launched in 2015 and observed several unexpected changes in test ma... | detecting and mitigating instrumental glitches in lisa data |
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