98 citations · 734 across the 33 of their papers we have counts for
5 papers · 1 filter
Gauge-invariant perturbations of relativistic non-perfect fluids in spherical spacetime
David Díaz-Guerra, Conrado Albertus, Prasanta Char +1
Astrophysical compact objects are usually studied using a perfect fluid model. However, in astrophysical processes out-of-equilibrium, dissipative effects become important to descr…
Tests of General Relativity with GW230529: a neutron star merging with a lower mass-gap compact object
Elise M. Sänger, Soumen Roy, Michalis Agathos +16
On May 29, 2023, the LIGO Livingston observatory detected the gravitational-wave signal GW230529_181500 from the merger of a neutron star with a lower mass-gap compact object. Its…
Effect of superfluid matter of neutron star on the tidal deformability
Sayak Datta, Prasanta Char
We study the effect of superfluidity on the tidal response of a neutron star in a general relativistic framework. In this work, we take a dual-layer approach where the superfluid m…
Role of crustal physics in the tidal deformation of a neutron star
Bhaskar Biswas, Rana Nandi, Prasanta Char +1
In the late inspiral phase, gravitational waves from binary neutron star mergers carry the imprint of the equation of state due to the tidally deformed structure of the components.…
Relativistic tidal properties of superfluid neutron stars
Prasanta Char, Sayak Datta
We investigate the tidal deformability of a superfluid neutron star. We calculate the equilibrium structure in the general relativistic two-fluid formalism with entrainment effect…