91 citations · 617 across the 30 of their papers we have counts for
9 papers · 1 filter
High accuracy post-Newtonian and numerical relativity comparisons involving higher modes for eccentric binary black holes and a dominant mode eccentric inspiral-merger-ringdown model
Abhishek Chattaraj, Tamal RoyChowdhury, Divyajyoti +2
Spherical harmonic modes of gravitational waveforms for inspiraling compact binaries in eccentric orbits from post-Newtonian (PN) theory accurate to third post-Newtonian order, and…
-mode oscillations of compact stars with realistic equations of state in dynamical spacetime
Swarnim Shashank, Fatemeh Hossein Nouri, Anshu Gupta
In this study, we perform full three dimensional numerical relativity simulations of non-rotating general relativistic stars. Extending the studies for polytropic equation of state…
Tidal deformation of dynamical horizons in binary black hole mergers
Vaishak Prasad, Anshu Gupta, Sukanta Bose +1
An important physical phenomenon that manifests itself during the inspiral of two orbiting compact objects is the tidal deformation of each under the gravitational influence of its…
Gravitational waves from binary black hole mergers surrounded by scalar field clouds: Numerical simulations and observational implications
Sunil Choudhary, Nicolas Sanchis-Gual, Anshu Gupta +3
We show how gravitational-wave observations of binary black hole (BBH) mergers can constrain the physical characteristics of a scalar field cloud parameterized by mass an…
News from horizons in binary black hole mergers
Vaishak Prasad, Anshu Gupta, Sukanta Bose +2
In a binary black hole merger, it is known that the inspiral portion of the waveform corresponds to two distinct horizons orbiting each other, and the merger and ringdown signals c…
Dynamics of marginally trapped surfaces in a binary black hole merger: Growth and approach to equilibrium
Anshu Gupta, Badri Krishnan, Alex B. Nielsen +1
The behavior of quasi-local black hole horizons in a binary black hole merger is studied numerically. We compute the horizon multipole moments, fluxes and other quantities on black…
Padé approximants for truncated post-Newtonian neutron star models
Anshu Gupta, A. Gopakumar, Bala R. Iyer +1
Padé approximants to truncated post-Newtonian neutron star models are constructed. The Padé models converge faster to the general relativistic (GR) solution than the truncated post…
Behaviour of the Centrifugal Force and of Ellipticity for a Slowly Rotating Fluid Configuration with Different Equations of State
Anshu Gupta, Sai Iyer, A. R. Prasanna
We have evaluated the centrifugal force acting on a fluid element and the ellipticity of the fluid configuration, which is slowly rotating, using the Hartle-Thorne solution for dif…
Centrifugal Force and Ellipticity behaviour of a slowly rotating ultra compact object
Anshu Gupta, Sai Iyer, A. R. Prasanna
Using the optical reference geometry approach, we have derived in the following, a general expression for the ellipticity of a slowly rotating fluid configuration using Newtonian f…