415 citations · 3.6k across the 40 of their papers we have counts for
13 papers · 1 filter
Parameters estimation and strong gravitational lensing of nonsingular Kerr-Sen black holes
Sushant G. Ghosh, Rahul Kumar, Shafqat Ul Islam
The recent time witnessed a surge of interest in strong gravitational lensing by black holes is due to the Event Horizon Telescope (EHT) results, which suggest comparing the black…
Cryogenic suspension design for a kilometer-scale gravitational-wave detector
Takafumi Ushiba, Tomotada Akutsu, Yoichi Aso +43
We report the mirror suspension design for Large-scale Cryogenic Gravitational wave Telescope, KAGRA, during bKAGRA Phase 1. Mirror thermal noise is one of the fundamental noises f…
Sensitivity and Performance of the Advanced LIGO Detectors in the Third Observing Run
LIGO Instrument Science List, :, A. Buikema +197
On April 1st, 2019, the Advanced Laser Interferometer Gravitational-Wave Observatory (aLIGO), joined by the Advanced Virgo detector, began the third observing run, a year-long dedi…
Improving the Robustness of the Advanced LIGO Detectors to Earthquakes
Eyal Schwartz, A Pele, J Warner +196
Teleseismic, or distant, earthquakes regularly disrupt the operation of ground--based gravitational wave detectors such as Advanced LIGO. Here, we present \emph{EQ mode}, a new glo…
Reducing Scattered Light in LIGO's Third Observing Run
S Soni, C Austin, A Effler +195
Noise due to scattered light has been a frequent disturbance in the Advanced LIGO gravitational wave detectors, hindering the detection of gravitational waves. The non stationary s…
Testing Rotating Regular Metrics as Candidates for Astrophysical Black Holes
Rahul Kumar, Amit Kumar, Sushant G. Ghosh
The Event Horizon Telescope, a global submillimeter wavelength very long baseline interferometry array, produced the first image of supermassive black hole M87* showing a ring of d…
Phase transition of AdS black holes in 4D EGB gravity coupled to nonlinear electrodynamics
Sushant G. Ghosh, Dharm Veer Singh, Rahul Kumar +1
Einstein-Gauss-Bonnet (EGB) gravity is an outcome of quadratic curvature corrections to the Einstein-Hilbert gravity action in the form of a Gauss-Bonnet (GB) term in dime…
Characterization of systematic error in Advanced LIGO calibration
Ling Sun, Evan Goetz, Jeffrey S. Kissel +23
The raw outputs of the detectors within the Advanced Laser Interferometer Gravitational-Wave Observatory need to be calibrated in order to produce the estimate of the dimensionless…
Gravitational lensing by charged black hole in regularized Einstein-Gauss-Bonnet gravity
Rahul Kumar, Shafqat Ul Islam, Sushant G. Ghosh
Among the higher curvature gravities, the most extensively studied theory is the so-called Einstein-Gauss-Bonnet (EGB) gravity, whose Lagrangian contains Einstein term with the GB…
Photon ring structure of rotating regular black holes and no-horizon spacetimes
Rahul Kumar, Sushant G. Ghosh
The Kerr black holes possess a photon region with prograde and retrograde orbits radii, respectively, and , and thereby always cast a clos…
Gravitational lensing by black holes in the Einstein-Gauss-Bonnet gravity
Shafqat Ul Islam, Rahul Kumar, Sushant G. Ghosh
Recently, a non-trivial Einstein-Gauss-Bonnet (EGB) theory of gravity, by rescaling the GB coupling parameter as , was formulated in \cite{Glavan:2019inb}, which bypa…
Rotating black holes in Einstein-Gauss-Bonnet gravity and its shadow
Rahul Kumar, Sushant G. Ghosh
Recently there has been a surge of interest in regularizing, a limit of, the Einstein-Gauss-Bonnet (EGB) gravity, and the resulting regularized EGB gravity has non…
Quantum correlations between the light and kilogram-mass mirrors of LIGO
Haocun Yu, L. McCuller, M. Tse +196
Measurement of minuscule forces and displacements with ever greater precision encounters a limit imposed by a pillar of quantum mechanics: the Heisenberg uncertainty principle. A l…