6 papers
A Collapsar-Disk Origin for GW190814
Vishal Baibhav, Brian D. Metzger, Lam Hui
GW190814 was a remarkable gravitational-wave (GW) event: a merger between a 23 solar-mass black hole (BH) and a 2.6 solar-mass compact object, with an extreme mass ratio that is di…
Inferring Eccentricity of Binary Black Holes from Spin-Orbit Misalignment
Vishal Baibhav
Orbital eccentricity remains one of the least accessible parameters in observations of binary black hole (BBH) systems, largely erased by gravitational radiation long before detect…
Black hole spectroscopy: from theory to experiment
Emanuele Berti, Vitor Cardoso, Gregorio Carullo +70
The "ringdown" radiation emitted by oscillating black holes has great scientific potential. By carefully predicting the frequencies and amplitudes of black hole quasinormal modes a…
Extracting linear and nonlinear quasinormal modes from black hole merger simulations
Mark Ho-Yeuk Cheung, Emanuele Berti, Vishal Baibhav +1
In general relativity, when two black holes merge they produce a rotating (Kerr) black hole remnant. According to perturbation theory, the remnant emits "ringdown" radiation: a sup…
Pulsar Rockets and Gaia Neutron Star Binaries
Vishal Baibhav, Andrei Gruzinov, Yuri Levin
We prove that the spin-aligned electromagnetic recoil force acting on a pulsar vanishes identically in Force-Free Electrodynamics. This contrasts with Hirai et al.'s recent argumen…
Revising the Spin and Kick Connection in Isolated Binary Black Holes
Vishal Baibhav, Vicky Kalogera
The origin of black hole (BH) spins remains one of the least understood aspects of BHs. Despite many uncertainties, it is commonly assumed that if BHs originated from isolated mass…