218 citations · 3.3k across the 99 of their papers we have counts for
99 papers
An observational signature for extremal black holes
Stefanos Aretakis, Gaurav Khanna, Subir Sabharwal
We consider scalar perturbations of the Reissner--Nordström family and the Kerr family. We derive a characteristic expression of the radiation field, at any given unit solid angle…
On the approximate relation between black-hole perturbation theory and numerical relativity
Tousif Islam, Gaurav Khanna
We investigate the interplay between numerical relativity (NR) and adiabatic point-particle black hole perturbation theory (ppBHPT) in the comparable mass regime for quasi-circular…
Toward exponentially-convergent simulations of extreme-mass-ratio inspirals: A time-domain solver for the scalar Teukolsky equation with singular source terms
Manas Vishal, Scott E. Field, Katie Rink +2
Gravitational wave signals from extreme mass ratio inspirals are a key target for space-based gravitational wave detectors. These systems are typically modeled as a distributionall…
Interplay between numerical relativity and perturbation theory : finite size effects
Tousif Islam, Gaurav Khanna
We investigate the interplay between numerical relativity (NR) and point-particle black hole perturbation theory (ppBHPT) in the comparable mass ratio regime. In the ppBHPT framewo…
Aretakis Hair for Extreme Kerr Black Holes with Axisymmetric Scalar Perturbations
Lior M. Burko, Gaurav Khanna, Subir Sabharwal
We study the evolution of axially-symmetric scalar field perturbations on an extreme Kerr spacetime for initial data with multipole moments higher than the least ra…
Remnant black hole properties from numerical-relativity-informed perturbation theory and implications for waveform modelling
Tousif Islam, Scott E. Field, Gaurav Khanna
During binary black hole (BBH) mergers, energy and momenta are carried away from the binary system as gravitational radiation. Access to the radiated energy and momenta allows us t…