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Measuring deviations from the Kerr geometry with black hole ringdown
Kallol Dey, Enrico Barausse, Soumen Basak
Black holes in General Relativity are famously characterized by two "hairs" only, the mass and the spin of the Kerr spacetime. Theories extending General Relativity, however, allow…
Numerical simulations of inflationary dynamics: slow roll and beyond
Siddharth S. Bhatt, Swagat S. Mishra, Soumen Basak +1
Numerical simulations of the inflationary dynamics are presented here for a single canonical scalar field minimally coupled to gravity. We spell out the basic equations governing t…
First joint observation by the underground gravitational-wave detector, KAGRA, with GEO600
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1669
We report the results of the first joint observation of the KAGRA detector with GEO600. KAGRA is a cryogenic and underground gravitational-wave detector consisting of a laser inter…
Constraints on compact dark matter from gravitational wave microlensing
S. Basak, A. Ganguly, K. Haris +3
If a significant fraction of dark matter is in the form of compact objects, they will cause microlensing effects in the gravitational wave (GW) signals observable by LIGO and Virgo…
Hawking radiation of anyons
Vishnulal C, Soumen Basak, Saurya Das
We derive the Hawking radiation spectrum of anyons, namely particles in (2+1)-dimension obeying fractional statistics, from a Bañados, Teitelboim, and Zanelli (BTZ) black hole, in…
Effect of data gaps on the detectability and parameter estimation of massive black hole binaries with LISA
Kallol Dey, Nikolaos Karnesis, Alexandre Toubiana +4
Massive black hole binaries are expected to provide the strongest gravitational wave signals for the Laser Interferometer Space Antenna (LISA), a space mission targeting mH…