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the matra gravitational and geophysical laboratory (mggl) has been established by the mta wigner research centre for physics, institute of particle and nuclear physics in 2015. the primary goal of the subsurface laboratory is to organize proper environment for accurate estimation of geophysical noise at the potential i... | electromagnetic investigation at the site of the matra gravitational and geophysical laboratory |
there is compelling evidence that supermassive black holes (smbh) reside at the centers of all large galaxies and are the gravitational ‘engines’ of active galactic nuclei (agn). furthermore, galaxy mergers are thought to have played a fundamental role in the growth and evolution of the largest galaxies in the nearby u... | monsters on the move: a search for supermassive black holes undergoing gravitational wave recoil |
it is important for gravitational wave detectors to distinguish between binary black hole mergers and systems that incorporate additional physics, such as the presence of neutron star matter or beyond-gr effects. properly capturing this additional information requires waveform models that encompass the space of theoret... | generating gravitational waveforms beyond bbhs using waveform splicing |
we are developing a micro satellite, kanazawa-sat3 , to be launched in fy2019. the main purpose of the mission is to localize x-ray transients coincide with gravitational wave events, e.g. short gamma-ray bursts, and to investigate the formation of extreme space-time of black holes and the origin of relativistic jet. w... | kanazawa-sat3: micro-satellite mission for monitoring x-ray transients coincide with gravitational wave events |
esa's lisa pathfinder mission contained the first subpicometer interferometer operated in space. this way, the local interferometry measurement relevant for the planned gravitational wave detector lisa has been successfully tested. the interferometer worked immediately, stably, and reliably from switch on until the end... | the lisa pathfinder optical metrology system |
lisa (laser interferometer space antenna) will be the first gravitational wave detector in space, aiming to use laser interferometry to detect gravitational-wave signals in the 0.1 mhz to 1 hz band. it consists of three satellites forming a near-equilateral triangle with 2.5 million km arms. due to the orbital mechanic... | design and construction of the three-backlink experiment: a phase reference distribution system for lisa. |
it sounds like something out of science fiction: a miniature black hole barrels through the densely packed remnant of a dead star, consuming it from the inside. strange though it may seem, this scenario might hold the key to discerning between stars composed of different kinds of exotic matter.strange stars, indeedcomp... | finding strange stars with primordial black holes |
the detection of gravitational waves from extreme mass ratio inspirals (emris) by the future space-based gravitational-wave detectors demands the generation of accurate enough waveform templates. since the spin of the smaller secondary body cannot be neglected for the detection and parameter estimation of emris, we stu... | adiabatic equatorial inspirals of a spinning body into a kerr black hole |
we consider the scientific potential of gravitational wave (gw) observations in the ~30 mhz to 3 hz frequency range with the mid-band atomic gravitational-wave interferometric sensor (magis). magis is a probe-class space-mission concept, using an atom-based gravitational wave detector, that will provide all-sky strain ... | gravitational wave astrophysics in the mid-band: progenitors and advanced localizations of advanced ligo/virgo binary-merger events |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s191222n in a time range of 1000 seconds [3] centered on the alert event time (2019-12-22 03:27:17.119 utc to 2019-12-22 03:43:57.119 utc) have been performed. during this time per... | ligo/virgo s191222n: upper limits from icecube neutrino searches |
researchers propose a device to verify the performance of the laser-based equipment that will fly on the laser interferometer space antenna. | how to test a space-based gravitational-wave detector |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s190930s in a time range of 1000 seconds [3] centered on the alert event time (2019-09-30 13:27:21.247 utc to 2019-09-30 13:44:01.247 utc) have been performed. during this time per... | ligo/virgo s190930s: upper limits from icecube neutrino searches |
the opportunity exists to scientifically explore the gravitation wave (gw) frequency band that is in between those accessible by lisa and ligo. this frequency region could be accessible by a low-cost space-based interferometric detector that relies only on laser interferometry technology similar to that flown onboard t... | space-based gravitational wave observations in the mid-band frequency region |
gravitational-wave detectors have begun observing coalescences of heavy (> 50 - 60m⊙) binary black holes (bbh) at a consistent pace for the past few years. a high level of waveform template accuracy is required for unbiased and precise estimation of source parameters for such bbh signals. numerical relativity (nr) c... | impact of higher-modes and merger modeling for gw150914 & gw170104 |
this is an update of gcn 25192 including the p-value from the bayesian search. searches for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s190728q in a time range of 1000 seconds [1] centered on the alert event time (2019-07-28 06:36:50.529 utc ... | ligo/virgo s190728q: second update on neutrino search with icecube |
how to calculate the gravitational waves (gws) of extreme-mass-ratio-inspirals (emris) in a highly accurate and efficient way still keeps a challenge. in this paper, we present a so-called fully recalibrated waveforms for emris with high accuracy. based on the numerical data by solving the teukolsky equations, we recal... | accurate recalibated waveforms for extreme-mass-ratio inspirals in effective-one-body frame |
we propose to build and rapidly deploy the glowbug telescope, a scintillator array to detect and localize gamma-ray transients with performance similar to the fermi gammaray burst monitor (gbm). glowbug will immediately increase the current sky coverage for short gamma-ray bursts (sgrbs) from neutron star (ns) binary (... | glowbug, a gamma-ray telescope for bursts and other transients |
we discuss the possibility to acquire information about the reheating temperature after inflation universe using future space-based gravitational wave (gw) detectors. | studying the reheating temperature after inflation with inflationary gravitational waves |
equatorial orbits of extreme mass ratio inspirals (emris) are a potential source for lisa, the proposed gravitational wave detector. this project aims to find the shape of the gravitational wave (gw) spectrum from such sources. this is done by implementing a frequency domain, teukolsky based code that can calculate the... | mapping out peaks in the spectra of highly eccentric orbits of emri gravitational wave signals for lisa |
in the 2030s lisa will be the first space-based gravitational wave detector, observing a new portion of the gravitational wave frequency spectrum. in this project, we found the approximate number of detectable massive binary black holes that do not evolve past the inspiraling phase during the time lisa is observing. my... | lisa observations of inspiraling massive binary black holes |
how to calculate the gravitational waves (gws) of extreme-mass-ratio-inspirals (emris) in a highly accurate and efficient way still keeps a challenge. in this paper, we present a so-called fully recalibrated waveforms for emris with high accuracy. based on the numerical data by solving the teukolsky equations, we recal... | accurately recalibrated waveforms for extreme-mass-ratio inspirals in effective-one-body frame |
as current gravitational-wave detectors undergo technological improvements, we will soon reach an era when it would be possible to identify black hole merger remnants by measuring their quasinormal mode frequencies. this idea, often called ``black hole spectroscopy'', is similar to identifying atomic elements through t... | multi-mode black hole spectroscopy: detection and parameter estimation |
the lisa observatory, a gravitational wave detector in space, consists of three drag-free spacecraft flying in equilateral triangle formation governed by their inertial reference sensors: a test mass (tm) in free fall surrounded by an electrode housing. critical to operation is maintaining a force noise level below a f... | charge management system for the lisa gravitational reference sensor using uv led-based charge control via the photoelectric effect |
searches for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s191216ap in a time range of 1000 seconds [1] centered on the alert event time (21:25:18.473 utc to 21:41:58.473 utc) have been performed. up until 21:33:21 utc icecube was collecting go... | ligo/virgo s191216ap: 1 counterpart neutrino candidate 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 s190707q in a time range of 1000 seconds [3] centered on the alert event time (2019-07-07 09:25:06.181 utc to 2019-07-07 09:41:46.181 utc) have been performed. during this time per... | ligo/virgo s190707q: upper limits from icecube neutrino searches |
the detection of accreting supermassive black holes at early epochs when the universe was less than a gyr old has posed a timing challenge for theoretical models of the formation of the first black holes. starting from stellar remnants of the first stars requires fine tuning to assemble a billion solar masses so swiftl... | unveiling the first black holes |
space observatories for gravitational radiation such as lisa are equipped with dedicated on-board instrumentation capable of measuring magnetic fields with low-noise conditions at millihertz frequencies. the reason is that the core scientific payload can only operate successfully if the magnetic environment meets certa... | design of a cubesat payload to test a magnetic measurement system for space-borne gravitational wave detectors |
we present here the proposal to use the lisa interferometer for detecting the gravitomagnetic field due to the rotation of the milky way, including the contribution given by the dark matter halo. the galactic signal would be superposed to the gravitomagnetic field of the sun. the technique to be used is based on the as... | dark gravitomagnetism with lisa and gravitational waves space detectors |
the fermi gamma-ray burst monitor (gbm) is an all-sky monitoring instrument sensitive to energies from 8 kev to 40 mev. its primary science objective is observing gamma-ray bursts (grbs) in support of the large area telescope, which are both part of the fermi gamma-ray space telescope. over the past 7 years of operatio... | transients with the fermi gbm |
the two advanced detectors of the laser gravitational wave observatory (ligo) recently completed their first observing run o1. targeting a factor of 10 sensitivity improvement over initial detectors, advanced ligo promises to open the new era of gravitational wave astronomy. even if not yet operating at full sensitivit... | status of advanced ligo |
advanced ligo began observing in september 2015 with over 3 times the distance reach (27 times the sensitive volume) of its previous configuration. some gravitational-wave sources, particularly neutron star binary mergers, are expected to produce broadband electromagnetic transients which may be crucial to understandin... | broadband electromagnetic follow-up of advanced ligo sources |
with ligo detecting stellar mass black holes and (soon) other stellar mass compact objects, and with lisa pathfinder demonstrating important elements of the technology needed to fly a gravitational-wave antenna in space, the case for a low-frequency, space-based gravitational-wave detector - lisa - is stronger than eve... | low-frequency gravitational-wave science frontiers |
there are many local convection systems of heat and mass in black holes. these large scale coupled systems including planets and molten masses which generate momentum in black hole and consequently generate coupled gravitational and electromagnetic waves. therefore black hole's gravity is shifting due to distribution o... | gravity shifting due to distribution of momentum in black hole and its relation with time flux |
ccsnmultivar aids the analysis of core-collapse supernova gravitational waves. it includes multivariate regression of fourier transformed or time domain waveforms, hypothesis testing for measuring the influence of physical parameters, and the abdikamalov et. al. catalog for example use. ccsnmultivar can optionally inco... | ccsnmultivar: core-collapse supernova gravitational waves |
the expectation of further gravitational wave events from current and upcoming observing runs by ligo will be greatly enhanced by the space mission lisa. black hole binaries, with masses similar to gw150914, will be detectable by both experiments, thus providing a unique ``multi-band'' view of such systems, from the de... | centihertz to kilohertz: multi-band gw astronomy |
the recent gravitational wave observations by the ligo/virgo collaboration have allowed the first tests of general relativity (gr) in the extreme gravity regime, when comparable-mass black holes and neutron stars collide. in addition, future space-based detectors, such as lisa, will allow tests of gr with gravitational... | the illusion of the ubiquity of chaos |
increased bandwidth and improved sensitivity at low frequencies in the advanced ligo/virgo detectors have led to a vast increase in the number of templates against which data is cross correlated. it has also resulted in longer template waveforms. both of these effects have amplified the computational cost of the gravit... | developing an early-warning search for gravitational wave transients using random matrix factorization |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s190910d in a time range of 1000 seconds [3] centered on the alert event time (2019-09-10 01:17:59.243 utc to 2019-09-10 01:34:39.243 utc) have been performed. during this time per... | ligo/virgo s190910d: 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 s190720a in a time range of 1000 seconds [3] centered on the alert event time (2019-07-20 00:00:16.747 utc to 2019-07-20 00:16:56.747 utc) have been performed. during this time per... | ligo/virgo s190720a: upper limits from icecube neutrino searches |
although the existence of dark matter (dm) has been indisputably proven by a range of cosmological and astronomical measurements, there is no viable candidate for dark matter in the standard model. in this talk, we will explore optomechanical resonators as detectors of scalar dark matter in the 10-12 - 10-6 ev regime. ... | search for light scalar dark matter using optomechanical systems |
simulating binary black hole coalescences involves solving einstein's equations with large-scale computing resources that can take months to complete for a single numerical solution. this engenders a computationally intractable problem for multiple-query applications related to parameter space exploration, data analysi... | nonspinning numerical relativity waveform surrogates: building the model |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s200219ac in a time range of 1000 seconds [3] centered on the alert event time (2020-02-19 09:35:55.195 utc to 2020-02-19 09:52:35.195 utc) have been performed. during this time pe... | ligo/virgo s200219ac: upper limits from icecube neutrino searches |
the light which is injected into the main interferometer in all advanced ground-based laser interferometric gravitational-wave detectors comes from high-power lasers operating at near infrared wavelengths, with powers exceeding 100 w. their frequency stability in the detection frequency band with respect to their relev... | the input optics system |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s190727h in a time range of 1000 seconds [3] centered on the alert event time (2019-07-27 05:55:13.986 utc to 2019-07-27 06:11:53.986 utc) have been performed. during this time per... | ligo/virgo s190727h: upper limits from icecube neutrino searches |
space-based gravitational-wave instruments such as lisa will provide extraordinary precise information about the central black holes in early galaxies. fine details about merging black holes are encoded in the gravitational waveforms that these instruments will measure, and sky position information is encoded in the me... | a frequency-domain approach for fast analysis of binary black hole parameter estimation capability of lisa-like instruments |
binarybhexp (binary black hole explorer) uses surrogate models of numerical simulations to generate on-the-fly interactive visualizations of precessing binary black holes. these visualizations can be generated in a few seconds and at any point in the 7-dimensional parameter space of the underlying surrogate models. the... | binarybhexp: on-the-fly visualizations of precessing binary black holes |
measurements of black-hole spins in gravitational wave (gw) observations with ground-based detectors are expected to be hampered by partial degeneracies between the two spins, and between the spins and the binary's mass ratio during the inspiral. if the inspiral and merger-ringdown parts of the gw signal happen to both... | can we measure individual black-hole spins from gravitational-wave observations? |
extreme mass ratio inspirals (emris) result when stellar mass compact objects orbiting a supermassive black hole (smbh) undergo radiation damping. such systems are prime sources for the proposed space-based gravitational wave detector lisa. however, highly eccentric emris produce significant gravitational radiation onl... | computation of highly eccentric emris to characterize background confusion noise in lisa |
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 ... | the grace follow-on laser ranging interferometer: making heritage for lisa |
future astronomical telescopes in space will have architectures with complex and demanding requirements in order to meet their science goals. the missions currently being studied by nasa for consideration in the next decadal survey range in wavelength from the x-ray to far infrared; examining phenomenon from imaging ex... | technology advancements for future astronomical missions |
gravitational wave (gw) detection in space is aimed at low frequency band (100 nhz- 100mhz) and middle frequency band (100mhz-10hz). the science goals are the detection of gws from (i) supermassive black holes; (ii) extreme-mass-ratio black hole inspirals; (iii) intermediate-mass black holes; (iv) galactic compact bina... | gravitational wave detection in space |
we discuss results from high-resolution numerical relativity (nr) simulations of neutron star (ns) f-mode oscillations obtained with the einstein toolkit. we excited isolated nss in one of their eigenmodes, evolved the system via nr simulations and compared different reconstruction methods, spacetime evolution formalis... | study of f-mode oscillations in numerical relativity simulations of perturbed neutron stars and highly eccentric binary neutron star mergers |
in this chapter, we first briefly review the early history of gravitational wave detection, and how the research turned towards the large scale interferometers that proved to be the most effective devices for gravitational wave astronomy. we provide an overview of what is generically defined as the "first generation" o... | present and future ground-based detectors |
polarizations are a fundamental property of the geometry of gravitational waves (gws), determining the directions in which space is stretched and squeezed as the waves whiz by. with the detection of gw170814, we have obtained some direct evidence that gw polarizations are as einstein predicted-but there is much more to... | gravitational-wave polarizations beyond general relativity: recent results and future prospects |
gravitational waves from compact binary coalescence are the most promising candidate for terrestrial broadband interferometric observatories like the advanced ligo/virgo detectors. searches for compact binary sources involve matched-filtering the data with a set of possible template waveforms spanning a range of wavefo... | geometric-stochastic template banks for gravitational wave searches from compact binaries in advanced-ligo data |
beneficial from the nano-satellite technology exploration in the past decades and the innovative development of silicon photomultipliers technology, in the present paper, a nano-satellite mission to detect x/gamma-ray em counterpart of compact binary star merger gw observed by ligo and virgo will be proposed (g-cube pr... | g-cube: a novel nano-satellite for gravitational wave electromagnetic counterpart (gw em) detection |
a theoretical model is analyzed to evaluate the laser emission efficiency and the ratio of heat generation in the gain medium which are calculated by the output optical laser power vs the amount of absorbed power. during the lasing process, the total of absorbed power in the nd:yag crystal is obtained around 5.8-w with... | thermal analysis of the direct pumping process in a 1064-nm monolithic non-planar ring oscillator nd/yag laser |
we explore how the stellar evolution of binary black hole (bbh) progenitors determines the spin misalignments and precessional morphologies of bbhs near merger. relevant aspects of stellar evolution include: (1) common envelope evolution, which brings the bbhs close enough together to merge through gravitational-wave e... | spin misalignments of binary black holes produced in the isolated field channel |
the nonlinear or christodoulou memory is a non-oscillatory contribution to the gravitational-wave signal that arises from the gravitational-wave stress energy tensor. using a semi-analytic approach we generate memory signals for a range of binary black hole parameters, extending previous work. we also-for the first tim... | gravitational-wave memory from coalescing binaries |
binary black holes radiate linear momentum in gravitational waves as they merge. recoils imparted to the black-hole remnant can reach thousands of km/s, thus ejecting black holes from their astrophysical hosts with deep consequences for both space- and ground-based gravitational-wave observatories. in this talk, we pre... | runaways: recoiling black holes and their gravitational-wave signatures |
although the existence of dark matter (dm) has been indisputably proven by a range of cosmological and astronomical measurements, there is no viable candidate for dark matter in the standard model. in this talk, we will explore optomechanical resonators as detectors of scalar dark matter in the 10-12 -10-6 ev regime. l... | search for light scalar dark matter using optomechanical systems |
this project will investigate the common envelope phase of stellar binaries. the common envelope phase is an important ingredient in the life of binaries that transform them into compact binaries. it is believe to be the mechanism by which pretty much all compact binaries form. in spite of its obvious importance, commo... | stellar mergers on a moving mesh |
we investigate the sensitivity of space-based gravitational wave observatories based on the platonic solids - tetrahedron, cube and octohedron - to a circular polarization of an isotropic stochastic gravitational wave background (isgwb) as a function of frequency. for such a detector geometry, each vertex is a drag-fre... | the gravitational compass: new space-based detection methods for circularly polarized gravitational waves |
isolated rotating neutron stars, asymmetric with respect to their rotational axes, are expected to emit nearly monochromatic gravitational wave signals. the signal arriving at the detector is frequency modulated by the earth's motion and by the intrinsic source spin-down. searches for such signals from stars with param... | an enhanced sensitivity procedure for continuous gravitational-wave detection |
stellar mass black hole binaries are expected to be produced through dynamical interactions within globular clusters. dynamically formed black hole binaries are likely to have higher chirp masses than binaries formed in the field. we show that these systems are observable with space-based gravitational wave detectors a... | prospects for observing dynamically formed stellar mass black hole binaries with gravitational waves |
the advanced ligo and virgo gravitational wave (gw) detectors are on track to begin collecting science data soon and to reach full sensitivity by 2019. low-latency analysis of the gw data will provide triggers for astronomers to seek electromagnetic transient counterparts. many instruments will contribute to that effor... | wide-field x-ray afterglow searches for gravitational wave events |
the recent detections of gw150914 and gw151226 imply an abundance of stellar-mass binary-black-hole mergers in the local universe. while ground-based gravitational-wave detectors are limited to observing the final moments before a binary merges, space-based detectors, such as the laser interferometer space antenna (lis... | distinguishing between formation channels for binary black holes with lisa |
we are now in the advanced detector era of gravitational wave astronomy, and the merger of two black holes (bhs) is one of the most promising sources of gravitational waves that could be detected on earth. to infer the bh masses and spins, the observed signal must be compared to waveforms predicted by general relativit... | surrogate models of precessing numerical relativity gravitational waveforms for use in parameter estimation |
arm-locking is a technique for stabilizing the frequency of a laser in an inter-spacecraft interferometer by using the spacecraft separation as the frequency reference. a candidate technique for future space-based gravitational wave detectors such as the laser interferometer space antenna (lisa), arm-locking has been e... | arm-locking with the grace follow-on laser ranging interferometer |
in this contribution we discuss the possibility of generating an observable gravitational wave (gw) background by coupling a pseudo-scalar inflaton to some abelian gauge fields. this analysis is performed by dividing inflationary models into universality classes. we find that of the most promising scenario is a starobi... | primordial gws from universality classes of pseudo-scalar inflation |
the nasa-chartered l3 study team is working to develop the us community participation and to support nasa's contribution to the esa-led lisa mission to observe gravitational waves via space-based detectors. the present activities of the l3st will be described, and the next steps for the study team will also be given. n... | l3 study team activities |
the inspiral and merger of binary neutron stars (bns) is one of the most promising potential sources of gravitational waves for ground-based detectors like advanced ligo. bns mergers are also likely a source of counterpart electromagnetic radiation. it is important to perform simulations of bns to better understand and... | compact object binaries with spinning neutron stars in numerical relativity |
we discuss the prospects for using optical lattice clocks for gravitational wave detection. we compare a space-based clock detector to other existing and proposed techniques, and analyze its potential for detecting low-frequency gravitational waves. | gravitational wave detection with optical lattice clocks |
millisecond pulsars (msps) are a class of radio pulsars with extremely stable rotation. their excellent timing stability can be used to study a wide variety of astrophysical phenomena. in particular, a large sample of these pulsars can be used to detect low-frequency gravitational waves. we have developed a precision p... | precision pulsar timing with nasa's deep space network |
general properties of gravitational waves in einstein gravity theory extended to any higher number of dimensions d are investigated. using the equation of geodesic deviation, evaluated with respect to an observer's natural orthonormal frame, exact spacetimes representing gravitational waves can be identified by specifi... | exact gravitational waves in higher dimensions |
the rich millihertz gravitational wave band can only be accessed with a space- based detector. the technology for such a detector will be demonstrated by the lisa pathfinder satellite that is due to launch this year and esa has selected gravitational wave detection from space as the science theme to be addressed by the... | gravitational wave science from space |
monitoring of the post-injection fate of co2 in subsurface reservoirs is of utmost importance. generally, monitoring options are active methods, such as 4d seismic reflection or pressure measurements in monitoring wells. we present a method of 4d density tomography of subsurface co2 reservoirs using cosmic-ray muon det... | imaging co2 reservoirs using muons borehole detectors |
stars are massive resonators that may be used as gravitational-wave (gw) detectors with isotropic sensitivity. new insights on stellar physics are being made possible by asteroseismology, the study of stars by the observation of their natural oscillations. the continuous monitoring of oscillation modes in stars of diff... | asteroseismology of red-giant stars as a novel approach in the search for gravitational waves |
small prototypes of gravitational wave detectors have been under development for over 30 years. but it is only now that we have the necessary technology available to build large instruments with good sensitivity. after several years of construction, the first ground-based interferometers will go into operation in 2001 ... | the liza cornerstone an esa/nasa collaborative mission |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s191204r in a time range of 1000 seconds [3] centered on the alert event time (2019-12-04 17:07:06.092 utc to 2019-12-04 17:23:46.092 utc) have been performed. during this time per... | ligo/virgo s191204r: upper limits from icecube neutrino searches |
the lisa pathfinder (lpf) was a joint esa / nasa technology demonstration mission for the laser interferometer space antenna (lisa) that operated from december 2015 through july 2017. designed to be the most sensitive accelerometer ever flown, the lpf surpassed its mission goals and proved sensitive enough for future g... | micrometeoroid population inference on lisa pathfinder data |
one of the most important frontiers in astronomy over the next two decades will be an understanding of the assembly of structure in the high-redshift universe. the tight correlations between the properties of galaxies and their massive central black holes, at least a low redshifts, suggests that a critical component of... | what can gravitational waves tell us about the assembly of supermassive black holes? |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s190728q in a time range of 1000 seconds [3] centered on the alert event time (2019-07-28 06:36:50.547 utc to 2019-07-28 06:53:30.547 utc) have been performed. during this time per... | ligo/virgo s190728q: upper limits from icecube neutrino searches |
searches for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s190808ae in a time range of 1000 seconds [1] centered on the alert event time (2019-08-08 22:13:01.496 utc to 2019-08-08 22:29:41.496 utc) have been performed. during this time period i... | ligo/virgo s190808ae: one coincident neutrino candidate from icecube search |
pulsed tev gamma-ray measurements from crab with the magic experiment and gravitational wave detection with the earth interferometers (ligo-virgo detectors) in the last three years represent two major steps forward for the understanding of young and middle-aged pulsar physics and energy losses at the moment the advance... | a multi-messenger approach to the search for the origin of the positron excess in cosmic rays |
white dwarf binaries with orbital periods below one hour will be the most numerous sources for the space-based gravitational wave detector lisa. based on thousands of individually resolved systems, we will be able to constrain binary evolution and provide a new map of the milky way and its close surroundings. in this p... | white dwarf binaries in the milky way |
we report on a recent effort to speed up the generation of gravitational wave signals from binary black holes in the context of space-based lisa-type detectors. recently, reduced order models have been developed that allow for a fast and accurate generation of inspiral-merger-ringdown waveforms, directly in the fourier... | a frequency-domain approach to lisa binary black hole waveforms |
we have developed the frequency-stabilized lasers for gravitational wave detector decigo, whose short-term and long-term frequency stability is required to be df/f=10-15 level with the high output power of 10 w. the short- and long-term frequency stability is realized by using frequency reference of an iodine absorptio... | stable and high power 515-nm lasers for the space gravitational wave detector: decigo |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s191213g in a time range of 1000 seconds [3] centered on the alert event time (2019-12-13 04:25:48.142 utc to 2019-12-13 04:42:28.142 utc) have been performed. during this time per... | ligo/virgo s191213g: 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 s190814bv in a time range of 1000 seconds [3] centered on the alert event time (2019-08-14 21:02:19.013 utc to 2019-08-14 21:18:59.013 utc) have been performed. during this time pe... | ligo/virgo s190814bv: upper limits from icecube neutrino searches |
lisa pathfinder is the second of the european space agency's small missions for advanced research and technology (smart). the goal of lisa pathfinder (lpf) is to demonstrate the technologies required for future laser interferometric spaceborne gravitational wave detectors. the development of the lpf hardware is now ove... | the lisa pathfinder mission |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s190828j in a time range of 1000 seconds [3] centered on the alert event time (2019-08-28 06:25:45.756 utc to 2019-08-28 06:42:25.756 utc) have been performed. during this time per... | ligo/virgo s190828j: upper limits from icecube neutrino searches |
the advanced pair telescope (apt) is a concept for a probe-class gamma-ray mission aimed at two primary science objects: (1) providing sensitivity to thermal-wimp dark matter over the entire natural range of annihilation cross-sections and masses and (2) identifying short grbs or gravity wave sources by detecting and l... | the advanced patricle-astrophysics telescope (apt) mission concept |
rapidly rotating neutron stars are promising sources of continuous gravitational waves for the ligo and virgo interferometers. all-sky searches for isolated neutron stars offer the potential to detect gravitational waves from neutron stars which have not been observed electromagnetically. these all-sky searches cover a... | hierarchical follow-up of outliers in all-sky searches for continuous gravitational waves |
we discuss the prospects of multiband gravitational wave science and some recent developments in multiband data analysis. a ground-based detector network has detected several stellar-mass black hole merger events, and many more detections are expected in the near future. a space-based detector such as lisa could observ... | the potential of multiband gravitational wave astronomy |
the space multi-band variable object monitor (svom) mission is a wide band observatory designed for making observations of gamma ray bursts (grb) from the visible band to gamma ray band, which is expected to launch around year of 2021. grm (gamma ray monitor) is an instrument onboard svom , which will provide the spect... | current status of the gamma ray monitor onboard svom |
recently, atomic clocks have reached a fractional frequency instability of about 10-16/ √τ . with such precision it may be possible to measure differences in the ticking rates of a spaced-based network of atomic clocks due to time dilation induced by passing gravitational waves. supermassive black hole binaries arising... | detecting gravitational wave time dilation using space-based atomic clocks |
new gamma detection technologies provide opportunities for revolutionary new science to be done from space. for example, gamma-ray burst detections associated with gravitational waves are among the most important scientific goals to achieve over the next few years. to date, the number of space missions looking for gamm... | a compact gamma spectrometer for space missions with miniaturized satellites |
with the motivation of explaining the dark matter and achieving the electroweak baryogenesis via the spontaneous cp-violation at high temperature, we propose a complex singlet scalar ($s=\frac{\chi+i\eta_s}{\sqrt{2}}$) extension of the two-higgs-doublet model respecting a discrete dark cp-symmetry: $s\to -s^*$. the dar... | electroweak baryogenesis, dark matter, and dark cp-symmetry |
a new era of lunar exploration has begun with participation of all major space agencies. this activity brings opportunities for revolutionary science experiments and observatories on the moon. the idea of a lunar gravitational-wave detector was already proposed during the apollo program. the key characteristic of the m... | opportunities and limits of lunar gravitational-wave detection |
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