V. JaberianHamedan

Tests of general relativity with GWTC-3

R. Abbott, H. Abe, F. Acernese, K. Ackley et autres

The ever-increasing number of detections of gravitational waves from compact binaries by the Advanced LIGO and Advanced Virgo detectors allows us to perform ever-more sensitive tests of general relativity (GR) in the dynamical and strong-field regime of gravity. We perform a suite …

us, jp, it, au, de, in, gb, br, es, fr, nl, gr, be, mx, kr, hu (code pays fourni par la source)

Search for Gravitational Waves Emitted from SN 2023ixf

Adrian Abac, R. Abbott, I. Abouelfettouh, F. Acernese et autres

Abstract We present the results of a search for gravitational-wave transients associated with core-collapse supernova SN 2023ixf, which was observed in the galaxy Messier 101 via optical emission on 2023 May 19, during the LIGO–Virgo–KAGRA 15th Engineering Run. We define a five-day …

Swift-BAT GUANO Follow-up of Gravitational-wave Triggers in the Third LIGO–Virgo–KAGRA Observing Run

Gayathri Raman, S. Ronchini, James DeLaunay, A. Tohuvavohu et autres

Abstract We present results from a search for X-ray/gamma-ray counterparts of gravitational-wave (GW) candidates from the third observing run (O3) of the LIGO–Virgo–KAGRA network using the Swift Burst Alert Telescope (Swift-BAT). The search includes 636 GW candidates received with low latency, 86 …

fr (code pays fourni par la source)

A Search Using GEO600 for Gravitational Waves Coincident with Fast Radio Bursts from SGR 1935+2154

Adrian Abac, R. Abbott, I. Abouelfettouh, F. Acernese et autres

Abstract The magnetar SGR 1935+2154 is the only known Galactic source of fast radio bursts (FRBs). FRBs from SGR 1935+2154 were first detected by the Canadian Hydrogen Intensity Mapping Experiment (CHIME)/FRB and the Survey for Transient Astronomical Radio Emission 2 in 2020 …

fr (code pays fourni par la source)

Search for Gravitational-wave Transients Associated with Magnetar Bursts in Advanced LIGO and Advanced Virgo Data from the Third Observing Run

R. Abbott, H. Abe, F. Acernese, K. Ackley et autres

Abstract Gravitational waves are expected to be produced from neutron star oscillations associated with magnetar giant flares and short bursts. We present the results of a search for short-duration (milliseconds to seconds) and long-duration (∼100 s) transient gravitational waves from 13 magnetar …

fr (code pays fourni par la source)

Precision mapping of a silicon test mass birefringence

V. JaberianHamedan, A. Adam, C. D. Blair, L. Ju et autres

Excellent mechanical and thermal properties of silicon make it a promising material for the test masses in future gravitational wave detectors. However, the birefringence of silicon test masses, due to impurity and residual stress during crystal growth or external stress, can reduce …

au (code pays fourni par la source)

High mechanical Q-factor measurement of Si using a 3D cantilever support

V. JaberianHamedan, J. Winterflood, C. D. Blair, L. Ju et autres

Thermal noise in test mass substrates and coatings is a significant noise contribution in the detection band of current and proposed future gravitational wave detectors. Substrate thermal noise can be reduced by using high mechanical Q-factor materials and cooling the test mass …

au (code pays fourni par la source)

Search for intermediate-mass black hole binaries in the third observing run of Advanced LIGO and Advanced Virgo

R. Abbott, T. D. Abbott, F. Acernese, K. Ackley et autres

Intermediate-mass black holes (IMBHs) span the approximate mass range 100−105 M⊙, between black holes (BHs) that formed by stellar collapse and the supermassive BHs at the centers of galaxies. Mergers of IMBH binaries are the most energetic gravitational-wave sources accessible by the …

us, it, au, de, in, gb, br, jp, fr, es, be, nl, kr, hu, pl (code pays fourni par la source)

Demonstration of dynamic thermal compensation for parametric instability suppression in Advanced LIGO

T. Hardwick, V. JaberianHamedan, C. D. Blair, A C Green et autres

Abstract Advanced LIGO and other ground-based interferometric gravitational-wave detectors use high laser power to minimize shot noise and suspended optics to reduce seismic noise coupling. This can result in an opto-mechanical coupling which can become unstable and saturate the interferometer control systems. …

us, au (code pays fourni par la source)

Suppression of thermal transients in advanced LIGO interferometers using CO 2 laser preheating

V. JaberianHamedan, C. Zhao, L. Ju, C. D. Blair et autres

Abstract In high optical power interferometric gravitational wave detectors, such as Advanced LIGO, the thermal effects due to optical absorption in the mirror coatings and the slow thermal response of fused silica substrate cause time dependent changes in the mirror profile. After …

au (code pays fourni par la source)

Preventing transient parametric instabilities in high power gravitational wave detectors using thermal transient compensation

V. JaberianHamedan, C. D. Blair, J. Liu, V. Bossilkov et autres

Abstract Laser interferometer gravitational wave detectors such as Advanced LIGO use large fused silica test masses in which temperature perturbations take many hours to reach dynamic equilibrium. When environmental disturbances cause the optical cavities to lose optical power there is a sudden …

au (code pays fourni par la source)