6 papers
Dynamical tidal response of neutron stars via scattering amplitudes
M. V. S. Saketh, Suprovo Ghosh, Nils Andersson
A key challenge of gravitational-wave physics is distinguishing the nature of compact objects in binary coalescences, in particular whether they are black holes or neutron stars. N…
Dynamical tidal Love numbers of black holes under generic perturbations: Connecting black hole perturbation theory with effective field theory
Sumanta Chakraborty, M. V. S Saketh, Tanja Hinderer +1
The foundation for modeling the coupling of the internal structure of compact objects in binary systems to their dynamics and emitted gravitational waves is a systematic effective…
Strong-field Gravitational Wave Lensing in the Kerr Background
M. V. S. Saketh, Rajes Ghosh, Anuj Mishra
Gravitational-wave (GW) lensing can encode valuable information about the properties of the intervening lens, but most existing studies remain restricted to the small-deflection, w…
Kerr-Newman quasinormal modes and Seiberg-Witten theory
Hector O. Silva, Jung-Wook Kim, M. V. S. Saketh
It was recently suggested the quasinormal-mode spectrum of black holes is related to a class of four-dimensional super Yang-Mills theories described by Seiberg-Witt…
Investigating tidal heating in neutron stars via gravitational Raman scattering
M. V. S. Saketh, Zihan Zhou, Suprovo Ghosh +2
We present a scattering amplitude formalism to study the tidal heating effects of nonspinning neutron stars incorporating both worldline effective field theory and relativistic ste…
Quasinormal modes of slowly-spinning horizonless compact objects
M. V. S. Saketh, Elisa Maggio
One of the main predictions of general relativity is the existence of black holes featuring a horizon beyond which nothing can escape. Gravitational waves from the remnants of comp…