17 citations · 59 across the 10 of their papers we have counts for
10 papers
Biases from Astrophysical Environmental Effects in Standard-Siren Cosmology
Ioannis Liodis, Rodrigo Vicente, Soumen Roy +1
Next-generation ground based gravitational wave detectors will enable precision standard-siren cosmology, making systematics increasingly important. We investigate how line-of-sigh…
Bochner Flatness and Soliton Dynamics in Lorentzian Kähler Spacetime Geometry
Karthika Ramasamya, Lavanya Kumara, Soumendu Roy +1
We study Riemann solitons and -hyperbolic Ricci solitons on Bochner-flat Lorentzian Kähler spacetime manifolds. Under the Einstein field equations with cosmological constant and…
Line-of-sight acceleration in compact binaries with higher harmonics and eccentricity
Soumen Roy, Justin Janquart
Direct detections of gravitational waves provide a unique opportunity to probe the astrophysical origin of compact binary mergers. The formation channels of these systems remain hi…
Scalar fields around black hole binaries in LIGO-Virgo-KAGRA
Soumen Roy, Rodrigo Vicente, Josu C. Aurrekoetxea +2
Light scalar particles arise naturally in many extensions of the Standard Model and are compelling dark-matter candidates. Gravitational interactions near black holes can trigger t…
Confronting general relativity with principal component analysis: Simulations and results from GWTC-3 events
Parthapratim Mahapatra, Sayantani Datta, Ish Gupta +10
We present a comprehensive assessment of multiparameter tests of general relativity (GR) in the inspiral regime of compact binary coalescences using principal component analysis (P…
Improved parametrized test of general relativity using the IMRPhenomX waveform family: Including higher harmonics and precession
Soumen Roy, Maria Haney, Geraint Pratten +2
When testing general relativity (GR) with gravitational wave observations, parametrized tests of deviations from the expected strong-field source dynamics are one of the most widel…
Compact Binary Coalescences in Dense Gaseous Environments Can Pose as ones in Vacuum
Soumen Roy, Rodrigo Vicente
The gravitational-wave events observed by the LIGO-Virgo-KAGRA collaboration are attributed to compact binary coalescences happening in vacuum. However, several studies suggest tha…
What is the nature of GW230529? An exploration of the gravitational lensing hypothesis
Justin Janquart, David Keitel, Rico K. L. Lo +26
On the 29th of May 2023, the LIGO-Virgo-KAGRA Collaboration observed a compact binary coalescence event consistent with a neutron star-black hole merger, though the heavier object…
Tests of General Relativity with GW230529: a neutron star merging with a lower mass-gap compact object
Elise M. Sänger, Soumen Roy, Michalis Agathos +16
On May 29, 2023, the LIGO Livingston observatory detected the gravitational-wave signal GW230529_181500 from the merger of a neutron star with a lower mass-gap compact object. Its…
First constraints on compact binary environments from LIGO-Virgo data
Giada Caneva Santoro, Soumen Roy, Rodrigo Vicente +4
The LIGO-Virgo analyses of signals from compact binary mergers observed so far have assumed isolated binary systems in a vacuum, neglecting the potential presence of astrophysical…