110 citations · 2k across the 94 of their papers we have counts for
8 papers · 1 filter
Does the gravitomagnetic monopole exist? A clue from a black hole x-ray binary
Chandrachur Chakraborty, Sudip Bhattacharyya
The gravitomagnetic monopole is the proposed gravitational analogue of Dirac's magnetic monopole. However, an observational evidence of this aspect of fundamental physics was elusi…
Fast Radio Bursts from neutron stars plunging into black holes
Sudip Bhattacharyya
Fast radio bursts (FRBs) are millisecond-duration intense radio flares occurring at cosmological distances. Many models have been proposed to explain these topical astronomical eve…
Gravitomagnetism and Pulsar Beam Precession near a Kerr Black Hole
Prashant Kocherlakota, Pankaj S. Joshi, Sudip Bhattacharyya +3
A rotating black hole causes the spin-axis of a nearby pulsar to precess due to geodetic and gravitomagnetic frame-dragging effects. The aim of our theoretical work here is to expl…
Relativistic disc line: a tool to constrain neutron star equation of state models
Sudip Bhattacharyya
Relativistic iron K spectral emission line from the inner disc of a neutron star low-mass X-ray binary (LMXB) was first detected in 2007. This discovery opened up new ways to pr…
Two coexisting families of compact stars: observational implications for millisecond pulsars
Sudip Bhattacharyya, Ignazio Bombaci, Domenico Logoteta +1
It is usually thought that a single equation of state (EoS) model "correctly" represents cores of all compact stars. Here we emphasize that two families of compact stars, viz., neu…
A precise measurement of the orbital period parameters of Cygnus X-3
Yash Bhargava, A. R. Rao, K. P. Singh +9
We present X-ray light curves of Cygnus X-3 as measured by the recently launched AstroSat satellite. The light curve folded over the binary period of 4.8 hours shows a remarkable s…