4 papers
Distinguishing Neutron Star vs. Low-Mass Black Hole Binaries with Late Inspiral & Postmerger Gravitational Waves Sensitivity to Transmuted Black Holes and Non-Annihilating Dark Matter
Sulagna Bhattacharya, Shasvath Kapadia, Basudeb Dasgupta
Gravitational wave signals from binary neutron star (BNS) mergers and binary low-mass black hole (BLMBH) mergers are highly similar in the early inspiral phase. Consequently, the a…
Dark Recipe for the First Giants: From Population III Stars to Early Supermassive Black Holes via Dark Matter Capture
Sulagna Bhattacharya, Debajit Bose, Basudeb Dasgupta +2
The presence of supermassive black holes (SMBHs) at high redshifts (), as revealed by James Webb Space Telescope (JWST), challenges standard black hole (BH) formation scenario…
Gravitational Waves as a Probe of Particle Dark Matter
Sulagna Bhattacharya
Galactic dark matter (DM) particles, having non-gravitational interactions with nucleons, can interact with stellar constituents and eventually become captured within stars. Over t…
Continuous Gravitational Waves: A New Window to Look for Heavy Non-annihilating Dark Matter
Sulagna Bhattacharya, Andrew L. Miller, Anupam Ray
Sun-like stars can transmute into comparable mass black holes by steadily accumulating heavy non-annihilating dark matter particles over the course of their lives. If such stars fo…