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sensing tiny distance variations interferometrically will be a key task in several future space missions. interferometric detectors such as (e)lisa will observe gravitational waves from cosmic events such as for instance super novae and extreme mass ratio inspirals. the detection principle of such detectors is sensing ... | simulating laser interferometers for missions such as (e)lisa, lisa pathfinder and grace follow-on |
the holometer program is a search for first experimental evidence that space-time has quantum structure. the detector consists of a pair of co-located 40-m power-recycled interferometers whose outputs are read out synchronously at 50 mhz, achieving sensitivity to spatially-correlated fluctuations in differential positi... | experimental constraints on the exotic shearing of space-time |
the direct detection of gravitational waves from the coalescence of black hole binaries is arguably one the greatest scientific breakthroughs of recent times. these are the first direct signals from regions of strong gravity. gravitational waves are generated not only by black hole mergers, but also by generic perturba... | gravitational radiation from superradiant instabilities of rotating black holes |
astrophysics is a broad and dynamic field that has led to an ever increasing number of incredible discoveries. just in the past decade or so astrophysicists have detected gravitational waves (and the electromagnetic counterpart) from a neutron star merger, imaged a black hole for the first time, discovered thousands of... | inner shell atomic processes in highly charged argon ebit plasma relevant to astrophysics |
space gravitational wave detector in japan named decigo is equilateral triangle-shaped laser interferometer with the arm length of 1000 km. for initial alignment and keeping formation of decigo, we propose novel satellite positioning system. our system consists of a single-mode laser, acousto-optic deflectors (aod) and... | novel satellite positioning system using acousto-optic deflector |
stellar mass black hole binaries have individual masses between 10-80 solar masses. these systems may emit gravitational waves at frequencies detectable at megaparsec distances by space-based gravitational wave observatories. in a previous study, we determined the selection effects of observing these systems with detec... | prospects for detection of extragalactic stellar black hole binaries in the nearby universe |
the lisa pathfinder mission will demonstrate the technology of drag-free test masses for use as inertial references in future space-based gravitational wave detectors. to accomplish this, the pathfinder spacecraft will perform drag-free flight about a test mass while measuring the acceleration of this primary test mass... | free-flight experiments in lisa pathfinder |
the laser interferometer space antenna (lisa) represents a class of space-based gravitational wave observatories that will attempt to measure gravitational waves in the frequency range from 0.01 mhz to 1 hz. these missions are all characterized by a constellation of three spacecraft housing proof masses in heliocentric... | investigation of the telescope back-reflection for space-based interferometric gravitational wave detectors |
current terrestrial gravitational-wave detectors operate at frequencies above 10 hz. there is strong astrophysical motivation to construct low-frequency gravitational-wave detectors capable of observing 10 mhz-10 hz signals. while space-based detectors provide one means of achieving this end, one may also consider terr... | suspending test masses in terrestrial millihertz gravitational-wave detectors: a case study with a magnetic assisted torsion pendulum |
gravitational wave (gw) interferometers are complex instruments, requiring years of commissioning to achieve the required sensitivities for the detection of gws, of order ≲10-21 in dimensionless detector strain, in the tens of hz to several khz frequency band. investigations carried out by the geo 600 detector characte... | cost-benefit analysis for commissioning decisions in geo 600 |
the millihertz gravitational wave band can only be accessed with a space-based interferometer, but it is one of the richest in potential sources. observations in this band have amazing scientific potential. the mergers between massive black holes with mass in the range 104-107m_{⊙}, which are expected to occur followin... | the scientific potential of space-based gravitational wave detectors |
the dense, chaotic centers of star clusters may be a birthplace for binary pairs of black holes like those observed by the laser interferometer gravitational-wave observatory (ligo). a new study now explores how eccentric binaries might arise and merge in these extreme environments.a question of originthe ten black-hol... | merging eccentric pairs of black holes |
fabry-perot cavities are ubiquitous in advanced interferometric gravitational-wave detectors. among their applications, they are used to enhance the gravitational-wave signal, to filter laser noises and to remove unwanted spatial modes from the detector's output. the goal of this chapter is to provide a description of ... | fabry-perot cavities and gaussian beams |
lisa is a future space-based gravitational wave (gw) detector which will detect gw in the low frequency regime (0.1 mhz to 1 hz). the sources in this regime are: supermassive binary black hole mergers, extreme mass ratio binary inspirals and galactic compact binaries.lisa's interferometer signals will be dominated by l... | arm locking performance for the new lisa design |
this is an update of gcn 25197 including updated p-values for the map circulated in the 5-update gcn notice. 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... | ligo/virgo s190728q: third update on neutrino search with icecube |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s200302c in a time range of 1000 seconds [3] centered on the alert event time (2020-03-02 01:49:51.519 utc to 2020-03-02 02:06:31.519 utc) have been performed. during this time per... | ligo/virgo s200302c: 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 s231119u in a time range of 1000 seconds centered on the alert event time (2023-11-19 07:44:28.000 utc to 2023-11-19 08:01:08.000 utc) have been performed [1,2]. during this time period ... | ligo/virgo/kagra s231119u: one 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 s191215w in a time range of 1000 seconds [3] centered on the alert event time (2019-12-15 22:22:32.333 utc to 2019-12-15 22:39:12.333 utc) have been performed. during this time per... | ligo/virgo s191215w: upper limits from icecube neutrino searches |
by monitoring tiny changes to the earth’s gravitational field, the grace satellites have been pinpointing the distribution of fresh water on our planet for almost two decades. but as marric stephens explains, a new follow-on mission is also helping with plans for a space-based gravitational-wave detector | weighing water from space |
extreme mass ratio inspirals (emris) are binaries containing a massive black hole (≳a few hundred 1000 solar masses, msol) and an orbiting smaller object (0.1-100 msol). they are expected to be one of the primary sources of gravitational waves with space-based gravitational wave detectors that will start operating in t... | quasi-periodic modulations following nuclear outbursts from galaxies |
the mitigation of laser frequency noise is a key challenge for the design of space-based interferometric gravitational wave detectors such as the laser interferometer space antenna (lisa) and its derivatives. arm locking is novel technique of stabilizing the laser frequency using the lisa arms that has been studied thr... | a demonstration of arm-locking for lisa using the grace-fo laser ranging instrument |
we compare currently available phenomenological and effective-one-body inspiral-merger-ringdown models for gravitational waves (gw) emitted from coalescing black hole binaries against a set of numerical relativity waveforms from the sxs collaboration. simplifications are used in the construction of some waveform models... | assessing accuracy of waveform models against numerical relativity waveforms |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s200114f in a time range of 1000 seconds [3] centered on the alert event time (2020-01-14 01:59:58.239 utc to 2020-01-14 02:16:38.239 utc) have been performed. during this time per... | ligo/virgo s200114f: 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 s200311bg in a time range of 1000 seconds [3] centered on the alert event time (2020-03-11 11:50:33.398 utc to 2020-03-11 12:07:13.398 utc) have been performed. during this time pe... | ligo/virgo s200311bg: 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 s190706ai in a time range of 1000 seconds [3] centered on the alert event time (2019-07-06 22:18:21.345 utc to 2019-07-06 22:35:01.345 utc) have been performed. during this time pe... | ligo/virgo s190706ai: 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 s190718y in a time range of 1000 seconds [3] centered on the alert event time (2019-07-18 14:26:52.068 utc to 2019-07-18 14:43:32.068 utc) have been performed. during this time per... | ligo/virgo s190718y: 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 s200112r in a time range of 1000 seconds [3] centered on the alert event time (2020-01-12 15:50:18.094 utc to 2020-01-12 16:06:58.094 utc) have been performed. during this time per... | ligo/virgo s200112r: 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 s200105ae in a time range of 1000 seconds [3] centered on the alert event time (2020-01-05 16:16:06.057 utc to 2020-01-05 16:32:46.057 utc) have been performed. during this time pe... | ligo/virgo s200105ae: upper limits from icecube neutrino searches |
the surface geometry of air-water interface is considered as an important factor affecting the performance of airborne lidar bathymetry (alb), and laser optical communication through the water surface. alb is a remote sensing technique that utilizes a pulsed green (532 nm) laser mounted to an airborne platform in order... | airborne lidar bathymetry beam diagnostics using an underwater optical detector array |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s191110af in a time range of 1000 seconds [3] centered on the alert event time (2019-11-10 22:58:24.183 utc to 2019-11-10 23:15:04.183 utc) have been performed. during this time pe... | ligo/virgo s191110af: 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 s190828l in a time range of 1000 seconds [3] centered on the alert event time (2019-08-28 06:46:49.887 utc to 2019-08-28 07:03:29.887 utc) have been performed. during this time per... | ligo/virgo s190828l: 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 s191109d in a time range of 1000 seconds [3] centered on the alert event time (2019-11-09 00:58:57.221 utc to 2019-11-09 01:15:37.221 utc) have been performed. during this time per... | ligo/virgo s191109d: upper limits from icecube neutrino searches |
following the recent discoveries of gravitational waves from compact binary mergers, searches are under way in advanced ligo and virgo data for continuous gravitational radiation emanating from rapidly spinning neutron stars. continuous wave (cw) search algorithms often yield outlier candidates of non-astrophysical ori... | strain histograms for evaluating continuous gravitational wave candidates |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s190923y in a time range of 1000 seconds [3] centered on the alert event time (2019-09-23 12:47:39.646 utc to 2019-09-23 13:04:19.646 utc) have been performed. during this time per... | ligo/virgo s190923y: upper limits from icecube neutrino searches |
the past decades has seen dramatic progress in our ability to manipulate and coherently control the motion of atoms. this exquisite control offers the prospect of a new generation of force sensors of unprecedented sensitivity and accuracy, from applications in navigation and geophysics, to tests of general relativity o... | large scale atom interferometers for ground and space relativistic metrology |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s200128d in a time range of 1000 seconds [3] centered on the alert event time (2020-01-28 02:11:51.903 utc to 2020-01-28 02:28:31.903 utc) have been performed. during this time per... | ligo/virgo s200128d: upper limits from icecube neutrino searches |
in the last 20 years, the study of compact interacting binaries has led to two major breakthroughs in astrophysics: the discovery of dark energy and the first detection of gravitational waves. although binaries are critically important to probe the properties of the universe and to test fundamental physical theories, o... | accreting white dwarfs as probes of compact binary evolution |
high precision temperature measurements are a transversal need in a wide area of physical experiments. space-borne gravitational wave detectors are a particularly challenging case, requiring both high precision and high stability in temperature measurement. in this contribution, we present a design able to reach 1 μk/h... | resistive-based micro-kelvin temperature resolution for ultra-stable space experiments |
the huge luminosity, the redshift distribution extending at least up to z~10 and the association with the explosive death of very massive stars make long gamma-ray bursts (grb) extremely powerful probes for investigating the early universe (pop-iii stars, cosmic re-ionization, sfr and metallicity evolution up to the "c... | multi-messenger cosmology and astrophysics with gamma-ray bursts |
located far from anthropical disturbances and with low seismic and magnetic background noise profiles, the lsbb facility is the ideal location for a new hybrid detector for the study of space-time strain. the miga infrastructure <xref ref-type="bibr" rid="r1">[1]</xref>, utilizes an array of atom interferom... | reaching ultra-high vacuum for a large vacuum vessel in an underground environment |
laser interferometer gravitational-wave observatory(ligo)/virgo's recent detection of gravitational waves from an intermediate mass black hole (imbh) binary merger with a combined mass of 150 solar masses has sparked speculation as to whether imbhs such as these are a natural consequence of binary stellar evolution. us... | inferring multiband imbh populations from cosmological simulations |
the gravitational wave high-energy electromagnetic counterpart all-sky monitor (gecam) is a space gamma-ray monitor dedicated to detect the high energy emission from various objects. it was launched in december 2020 and operated in a low earth orbit of ~600 km altitude and ~29 deg inclination angle. since gecam has 25 ... | preliminary results of gecam tgf observations |
the discovery of gravitational waves enabled assessment of the science benefits of new improved gravitational wave detectors. this paper discusses the science benefits of an asia-australia gravitational wave observatory (aago) consisting of a pair of widely spaced gravitational wave detectors on a north-south axis. ini... | the asia-australia gravitational wave detector concept |
gravitational-wave bayesian inference studies require a model to estimate parameter values. most previous parameter estimation (pe) studies use models that neglect spherical harmonic modes beyond the dominant quadrupole one due to their unavailability. recently, surrogate models built using numerical relativity (nr) da... | impact of subdominant modes on the measurability of binary black hole spin parameters |
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 limb sounding spatial heterodyne interferometer (shi) is used to retrieve temperature profiles which can be subsequently used to determ... | retrieval of gravity wave parameters using half interferograms measured by cubesats |
the moon burst energetics all-sky monitor (moonbeam) cubesat concept aims to deploy gamma-ray detectors in cislunar space to increase gamma-ray burst (grb) detections and improve grb localization precision using the timing-triangulation technique. a gamma-ray instrument in cislunar orbit will detect more grbs compared ... | the moon burst energetics all-sky monitor (moonbeam) cubesat, a gamma-ray burst detector for cislunar orbit |
in february 2016, a new ultra-high resolution airglow imager was installed at the nsf andes lidar observatory located near the summit of cerro pachon chile (30s 71w). this instrument has a 2k x 2k nir sensitive detector that combined with the front optics has an approximate 30 m pixel resolution. the sensitivity of the... | a high-resolution observation of the breakdown of a kelvin-helmholtz instability modulated by the passage of an atmospheric gravity wave |
verification binaries are compact galactic binaries with orbital periods of a few hours are gravitational wave sources in the mhz regime that are expected to be detected by the laser interferometer space antenna (lisa) and other future gw detectors. binary system parameters such as the inclination, orientation and dist... | a spectropolarimetric method for predicting the gravitational wave polarization of lisa verification binaries |
astrorivelatore gamma ad immagini leggero (agile) is a high-energy scientific space program funded by the agenzia spaziale italiana (asi—italian space agency); the mission was developed and is being operated in cooperation with inaf, infn, cifs and with the participation of several italian companies. the satellite was ... | in-orbit operations of agile mission: 11 years successfully in space |
while the test particle's geodesic motion around a kerr black hole is fully integrable, it may not be in modified theories of gravity. what are the observational consequences of observing an emri system that is not integrable through gravitational waves? in this talk, i will show how a truncated integrable system leads... | the evolution of the orbital's fundamental frequencies in non-integrable systems |
gravitational-wave driven inspirals of compact objects into massive black holes (extreme mass ratio inspirals - emris) form an interesting, long-lived signal for future space-based gravitational wave detectors. accurate signal predictions will be necessary to take full advantage of matched filtering techniques, motivat... | two timescale approximation applied to gravitational waves from eccentric emris |
improved ground-based gravitational wave detectors and highly anticipated space-based detectors are expected to provide us with a wealth of gravitational wave observations. in order to observe and characterize these signals, we require highly accurate template waveforms, often generated from models trained on numerical... | impact of secondary spin in black hole binaries with increasing mass ratio |
capacitive inertial reference sensors in space are a necessary technology for gravitational wave observations. they consist of a test mass (tm) in free fall surrounded by an electrode housing. in the space environment, the tm accrues electric charge that eventually pollutes the science measurement. to minimize electros... | design and simulation of pulsed uv led charge control for the lisa gravitational reference sensor |
current laser-interferometric gravitational wave detectors suffer from a fundamental limit to their precision due to the displacement noise of optical elements contributed by various sources. several schemes for displacement-noise free interferometers (dfi) have been proposed to mitigate their effects. the idea behind ... | quantum precision limits of displacement noise free interferometers |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s200208q in a time range of 1000 seconds [3] centered on the alert event time (2020-02-08 12:52:57.991 utc to 2020-02-08 13:09:37.991 utc) have been performed. during this time per... | ligo/virgo s200208q: upper limits from icecube neutrino searches |
entanglement is a fundamental resource that allows quantum sensors to surpass the standard quantum limit set by the quantum collapse of independent atoms. collective cavity-qed systems have succeeded in generating large amounts of directly observed entanglement involving the internal degrees of freedom of laser-cooled ... | entanglement-enhanced matter-wave interferometry in a high-finesse cavity |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s200316bj in a time range of 1000 seconds [3] centered on the alert event time (2020-03-16 21:49:36.157 utc to 2020-03-16 22:06:16.157 utc) have been performed. during this time pe... | ligo/virgo s200316bj: upper limits from icecube neutrino searches |
magis-100 is 100-meter atom interferometer currently being built at fermilab which will leverage modern atom optics techniques to search for oscillations in fundamental constants and time-dependent, equivalence-principle-violating forces which are key signatures of several ultra-light dark matter candidates. in additio... | high power, phase stabilized, frequency agile laser system for gravitational wave and dark matter detection using atom interferometry (magis-100) |
decigo and b-decigo is space gravitational wave detecter project which aims decihertz band. in (b-)decigo, dual-pass differential fabry-pérot interferometer (dpdfpi) is planed to be used. also, to reduce the noise from the space craft displacement, drag-free control is implemented. it is needed to demonstrate dpdfpi wi... | constructing test bench for integration tests of components developed for decigo and b-decigo |
late in 2015, gravitational physics reached a watershed moment with the first direct detections of gravitational waves. two events, each from the coalescence of a binary black hole system, were detected by the laser interferometer gravitationalwave observatory (ligo). at present, ligo comprises two 4 km laser interfero... | long-baseline laser interferometry for the detection of binary black-hole mergers |
a search 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 to 2019-07-28 06:53:30.529 utc) has been performed. during this time period ice... | ligo/virgo s190728q: one neutrino candidate from icecube search |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s190602aq in a time range of 1000 seconds [3] centered on the alert event time (2019-06-02 17:51:07.089 utc to 2019-06-02 18:07:47.089 utc) have been performed. during this time pe... | ligo/virgo s190602aq: upper limits from icecube neutrino searches |
icecube has performed a search for track-like muon neutrino events arriving from the position of askap j005547-270433 (https://gcn.gsfc.nasa.gov/gcn3/25487.gcn3), a candidate radio counterpart to the ligo/virgo event s190814bv (https://gcn.gsfc.nasa.gov/gcn3/25324.gcn3) in the time range of 0.1 days before to 14 days a... | ligo/virgo s190814bv: upper limits from a two-week icecube search for neutrinos from the direction of askap j005547-270433 |
to control the pointing accuracy of the telescope in the space gravitational wave detector at the nano-radian level, it is essential to design a flexure pivot with extremely low rotational moment nonlinearity during rotation. this study derives the theoretical equation of the nonlinear rotational moment of flexure pivo... | design and analysis of ultra-low moment noise flexure pivot in space gravitational wave detectors |
tilt-to-length (ttl) coupling noise is one of the main noise sources that affect space gravitational wave detection, and the tianqin project requires that the internal ttl coupling noise of the telescope used be less than 0.4 pm/hz1/2 within the frequency band from 0.1 mhz to 1 hz. in order to design a telescope that m... | the impact of telescope aberrations on the magnitude of tilt to length coupling noise in space based gravitational wave detectors |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s190701ah in a time range of 1000 seconds [3] centered on the alert event time (2019-07-01 20:24:46.578 utc to 2019-07-01 20:41:26.578 utc) have been performed. during this time pe... | ligo/virgo s190701ah: 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 s191205ah in a time range of 1000 seconds [3] centered on the alert event time (2019-12-05 21:43:48.569 utc to 2019-12-05 22:00:28.569 utc) have been performed. during this time pe... | ligo/virgo s191205ah: upper limits from icecube neutrino searches |
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 pre-merger localizations of advanced ligo/virgo binary-merger events |
searches for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s230520ae in a time range of 1000 seconds centered on the alert event time (2023-05-20 22:40:22.000 utc to 2023-05-20 22:57:02.000 utc) have been performed [1,2]. during this time period... | ligo/virgo/kagra s230520ae: upper limits from icecube neutrino search |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s200115j in a time range of 1000 seconds [3] centered on the alert event time (2020-01-15 04:14:49.753 utc to 2020-01-15 04:31:29.753 utc) have been performed. during this time per... | ligo/virgo s200115j: 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 s200225q in a time range of 1000 seconds [3] centered on the alert event time (2020-02-25 05:56:01.397 utc to 2020-02-25 06:12:41.397 utc) have been performed. during this time per... | ligo/virgo s200225q: upper limits from icecube neutrino searches |
the european space agency (esa) future space-based gravitational wave detector lisa, with a scheduled launch in 2034, consists of three spacecraft (sc) forming a triangle of 2.5 gm on a side in a heliocentric orbit 20o behind the earth. laser links between the sc enable laser interferometry to measure relative displace... | picometer dimensional stability testing of the lisa telescope at the university of florida |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s190910h in a time range of 1000 seconds [3] centered on the alert event time (2019-09-10 08:21:38.544 utc to 2019-09-10 08:38:18.544 utc) have been performed. during this time per... | ligo/virgo s190910h: 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 s190915ak in a time range of 1000 seconds [3] centered on the alert event time (2019-09-15 23:48:42.691 utc to 2019-09-16 00:05:22.691 utc) have been performed. during this time pe... | ligo/virgo s190915ak: 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 s190930t in a time range of 1000 seconds [3] centered on the alert event time (2019-09-30 14:25:47.685 utc to 2019-09-30 14:42:27.685 utc) have been performed. during this time per... | ligo/virgo s190930t: upper limits from icecube neutrino searches |
ground-based gravitational wave detectors use laser interferometry to realize ultra-precise displacement measurements between free-floating test masses to detect signals in the frequency band of 10 hz to 10 khz. light scattered out of and back into the main beam path creates noise in these detectors that non-linearly u... | simulating tunable coherence for scattered light suppression in laser-interferometric gravitational wave detectors |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s200224ca in a time range of 1000 seconds [3] centered on the alert event time (2020-02-24 22:14:14.406 utc to 2020-02-24 22:30:54.406 utc) have been performed. during this time pe... | ligo/virgo s200224ca: 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 s200129m in a time range of 1000 seconds [3] centered on the alert event time (2020-01-29 06:46:38.435 utc to 2020-01-29 07:03:18.435 utc) have been performed. during this time per... | ligo/virgo s200129m: upper limits from icecube neutrino searches |
ion beam deposition (ibd) is one of the leading techniques to produce high-quality optical coatings. this process has been shown to provide materials with low optical absorption and low mechanical loss suitable for use in ultrastable optical cavities such as gravitational-wave detectors and optical clocks. recently, th... | preliminary results from first large-area ion beam deposition system in the uk |
we measured very low light power backscattered by optical surfaces using low coherence interferometry. the backscattered light can indeed be a critical noise source for interferometric gravitational wave detectors such as lisa, the laser interferometer space antenna developed by esa, with the support of nasa and europe... | coherent detection of the light backscattered by an optical surface |
we discuss some aspects of sousa et al.(2020a, 2020b) 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 c... | gravitational wave emission by accretion of matter and magnetic deformation in fast rotating white dwarfs |
one of the key challenges of real-time detection and parameter estimation of gravitational waves (gws) from compact binary mergers is the computational cost of conventional matched-filtering and bayesian inference approaches. in particular, the application of these methods to the full signal parameter space available t... | detection and parameter estimation of gravitational waves from compact binary mergers using deep learning |
light scattered from optical components is a source of critical noise for interferometric gravitational wave detectors such as ligo, virgo, kagra, or the future space antenna lisa. therefore it is important to accurately quantify the amount of light coherently back-reflected or back-scattered by optical components invo... | characterization of light backscattered from optical components using balanced low coherence interferometry |
the ndmc (network for the detection of mesopause change) is a global network of ground based observatories with the objective of monitoring key parameters of the mesopause region. for temperature monitoring ground-based infrared p-branch spectrometers (grips) are widely deployed. these spectrometers allow for the retri... | grips-hi - a novel interferometer for measuring two-dimensional temperature distributions at the mesopause |
extreme mass ratio inspirals (emris) are binaries containing a massive black hole (≳a few hundred 1000 solar masses, msol) and an orbiting smaller object (0.1-100 msol). they are expected to be one of the primary sources of gravitational waves with space-based gravitational wave detectors that will start operating in t... | repeating x-ray transients from nuclei of external galaxies as extreme mass ratio inspirals |
the gravitational waves emitted when a small compact object falls into a supermassive black hole depend sensitively on the orbital trajectory of the small object, which in turn depends on the properties of the spacetime generated by the supermassive black hole. the ability to test general relativity in this extreme gra... | principal null directions and symmetries of black holes in quadratic gravity |
searches for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s200213t in a time range of 1000 seconds [1] centered on the alert event time (2020-02-13 04:02:20.328 utc to 2020-02-13 04:19:00.328 utc) have been performed. during this time period ic... | ligo/virgo s200213t: 1 counterpart neutrino candidate from icecube neutrino searches |
magis-100 is a 100-meter atom interferometer currently being built at fermilab which will leverage modern atom optics techniques to search for oscillations in fundamental constants and time-dependent, equivalence-principle-violating forces which are key signatures of several ultra-light dark matter candidates. in addit... | high power, phase stabilized, frequency agile laser system for gravitational wave and dark matter detection using atom interferometry (magis-100) |
the observation of gw170817 binary neutron star (bns) merger event has imposed strong bounds on the speed of gravitational waves (gws) locally, inferring that the speed of gws propagation is equal to the speed of light. future gw detectors designer projects will be able to detect many coalescences of bns at high z, suc... | forecasts on the speed of gravitational waves at high z |
the near infrared airglow camera (nirac) is a space based infrared imager deployed to the international space station in may 2019. the camera bandpass is 1.5 to 1.72 microns (h band), which is ideal for observing the bright oh meinel airglow emission. nirac has an ~ 23° x 23° fov, sweeping out an ~170 (140) km ground (... | storm-generated atmospheric gravity wave observations from the iss using the near infrared airglow camera (nirac) |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of gravitational-wave candidate s190924h in a time range of 1000 seconds [3] centered on the alert event time (2019-09-24 02:10:26.847 utc to 2019-09-24 02:27:06.847 utc) have been performed. during this time per... | ligo/virgo s190924h: upper limits from icecube neutrino searches |
the calorimetric electron telescope (calet) is a 30 radiation length deep imaging calorimeter launched to the international space station in august 2015 composed of a charge detector (chd), imaging calorimeter (imc), and total absorption calorimeter (tasc). with a depth of 27 radiation lengths, the lead tungstate tasc ... | calet searches and sensitivity to gev-energy em counterpart emission from gravitational wave events |
the remarkable success of atom coherent manipulation techniques has motivated competitive research and development in precision metrology. matter-wave inertial sensors - accelerometers, gyrometers, gravimeters - based on these techniques are today at the forefront of their respective measurement classes. atom inertial ... | airborne and underground matter-wave interferometers: geodesy, navigation and general relativity |
hugh everett's "relative state" model [1] of the observing element in quantum theory is expanded in the event oriented world view [2] and used to show how inertial interactions suggested by "mach's principle" can resolve the wave particle duality. i argue that bullet like photons are not ontologically real but have bee... | photons as observer transitions in the event oriented world view |
in this work, we recorded the retro-reflected and back-scattered light from a system of two components i.e, a single side ar coated sio2 window and a mirror placed at tilt angle of 10° in the transmission of the window. retro-reflection and back-scattering from components in an optical system can be detrimental for sys... | interferometric quantification and identification of back-reflected and back-scattered light from a system of two optical components |
quantum resources in form of entangled atoms promise to boost the sensitivity of atom interferometers beyond the regime achievable with classical sensor devices. future dark matter or gravitational wave detectors, tests of the equivalence principle and even simple inertial sensors based on atom interferometry in combin... | effective models for atom-interferometry in quantized electromagnetic fields in free space and in cavities |
the grace follow-on mission consists of a pair of satellites to be launched in 2017 into a low-earth polar orbit. as the precursor mission grace, it will provide monthly global maps of earth's gravity field to study mass changes within the system earth, like glacier melting or ground-water depletion. the new mission wi... | the grace follow-on laser ranging interferometer |
searches [1,2] for track-like muon neutrino events detected by icecube consistent with the sky localization of the joint gravitational-wave and grb candidate fermi gbm-190816 in a time range of 1000 seconds [3] centered on the gw event time (2019-08-16 21:13:53.027 utc to 2019-08-16 21:30:33.027 utc) have been performe... | fermi gbm-190816: upper limits from icecube neutrino searches |
raman lidar measurements provide profiles of several different tracers of spatial and temporal variations, which are excellent signatures for studies of dynamical processes in the atmosphere. an examination of raman lidar data collected during the last four decades clearly show signatures of atmospheric planetary waves... | signatures of dynamical processes in raman lidar profiles of the atmosphere |
measurement of magnetic field fluctuations is one of the key science objectives in many space missions. in missions like lisa, the future space-borne gravitational wave detector, magnetometers may help to compensate and analyze the force and torque disturbances generated on the test masses by the magnetic field fluctua... | development of a miniaturized low-noise magnetometer for space missions |
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