5 citations · 7 across the 7 of their papers we have counts for
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Testing General Relativity with GWTC-4.0 through mixture models
Koustav Chandra, Juan Calderón Bustillo
Gravitational-wave observations of compact binary mergers have enabled precision tests of gravity in the strong-field dynamical regime. Current approaches combine single-event resu…
Intrinsic handedness in O1-O4a black-hole mergers: probing orbital precession, remnant retention in dense environments and cosmological mirror asymmetry
Juan Calderón Bustillo, Adrián del Rio, Nicolás Sanchis-Gual +1
Precessing binary black-holes generically produce an imbalance of right- and left- handed gravitational waves, reflecting the breaking of mirror symmetry by the merger dynamics. We…
Eccentricity in Disguise? Insights from GW231123 and Numerically Simulated Binary Black Hole Merger Signals
Koustav Chandra, Johann Fernandes, Akshita Mittal +1
GW231123 is a gravitational-wave signal originating from the merger of a black hole binary with total mass , the largest ever detected by the LIGO-Virgo-Kagra C…
Black-hole ringdown analysis with inspiral-merger informed templates and limitations of classical spectroscopy
Koustav Chandra, Juan Calderón Bustillo
The ringdown of a perturbed black hole consists of a superposition of quasi-normal modes (QNMs), with complex frequencies determined by the black hole's mass and spin, while phases…
Improving the detection significance of gravitational wave transient searches with CNN models
Johann Fernandes, Archana Pai, Koustav Chandra
Gravitational wave (GW) transient searches rely on signal-noise discriminators to distinguish astrophysical signals from noise artefacts. These discriminators are typically tuned t…
Testing mirror symmetry in the Universe with LIGO-Virgo black-hole mergers
Juan Calderón Bustillo, Adrian del Rio, Nicolas Sanchis-Gual +2
Certain precessing black-hole mergers produce gravitational waves with net circular polarization, understood as an imbalance between right- and left-handed amplitudes. According to…
Unmasking noise transients masquerading as intermediate-mass black hole binaries
Sayantan Ghosh, Koustav Chandra, Archana Pai
In the first three observation runs, ground-based gravitational wave (GW) detectors have observed close to 100 compact binary coalescence (CBC) events. The GW detection rates for C…
Impact of Bayesian Priors on the Inferred Masses of Quasi-Circular Intermediate-Mass Black Hole Binaries
Koustav Chandra, Archana Pai, Samson H. W. Leong +1
Observation of gravitational waves from inspiralling binary black holes has offered a unique opportunity to study the physical parameters of the component black holes. To infer the…