94 citations · 324 across the 14 of their papers we have counts for
14 papers
Source-Driven Tails in Kerr Spacetime: Nonlinear effects in Late-Time Behavior
Som Dev Bishoyi, Subir Sabharwal, Gaurav Khanna
We present the long-duration time-domain simulations of scalar-field tails in Kerr spacetimes driven by \emph{outgoing} multipolar sources. Extending the recent work in the literat…
Nuclear and electron scattering by neutrinos and dark matter in condensed systems
James B. Dent, Barry A. Friedman, Jayden L. Newstead +1
Low-threshold dark matter detectors, in particular cryogenic detectors based on dielectric materials, are among the best tools for probing sub-GeV dark matter masses. In the coming…
Numerical Evidence for Non-Axisymmetric Gravitational "Hair" for Extremal Kerr Black Hole Spacetimes with Hyperboloidal Foliations
Som Dev Bishoyi, Subir Sabharwal, Gaurav Khanna
Various generalizations of the scalar, axisymmetric "horizon hair" for extremal black holes have recently appeared in the literature. In this paper, we propose an expression for a…
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…
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…
Scalar and Gravitational Transient "Hair" for Near-Extremal Black Holes
Kevin Gonzalez-Quesada, Subir Sabharwal, Gaurav Khanna
We study the existence and nature of Aretakis "hair" and its potentially observable imprint at a finite distance from the horizon (Ori-coefficient) in near-extremal black hole back…