84 citations · 429 across the 23 of their papers we have counts for
23 papers
Spectral evolution of NS binary system GX 349+2 using AstroSat observations
Garima Tyagi, Suchismito Chattopadhyay, Sree Bhattacherjee +3
We present a broadband spectral study of the Sco-like Z source GX 349+2 using AstroSat LAXPC and SXT observations obtained during 2019 and 2024. The X-ray light curves exhibit larg…
Bouncing Cosmologies in modified gravity with space time torsion
Sonej Alam, Somasri Sen, Soumitra Sengupta
We explore the possibility of realizing a non-singular bounce in the early universe within the framework of modified gravity with spacetime torsion. In Einstein Cartan theory, tors…
Quasi-Periodic Oscillations due to radiative feedback mechanism between the disc and corona
Akash Garg, Ranjeev Misra, Somasri Sen
Compact object systems exhibit Quasi-Periodic Oscillations (QPOs) as revealed by peaked features in their power density spectra. It has been known that stochastic variations in the…
Modelling the Energy-dependent broadband variability in the black-hole transient GX 339-4 using Astrosat and NICER
Hitesh Tanenia, Akash Garg, Ranjeev Misra +1
We present a spectro-timing analysis of the black hole X-ray transient GX 339-4 using simultaneous observations from Astrosat and NICER during the 2021 outburst period. The combine…
Absence of antisymmetric tensor fields : Clue from f(R) model of gravity
Sonej Alam, Somasri Sen, Soumitra Sengupta
One of the surprising aspects of the present Universe, is the absence of any noticeable observable effects of higher-rank antisymmetric tensor fields in any natural phenomena. Here…
Investigating the Energy-Dependent Temporal Nature of Black Hole Binary System H 1743-322
Nazma Husain, Akash Garg, Ranjeev Misra +1
Black hole X-ray binaries routinely exhibit Quasi Periodic Oscillations (QPOs) in their Power density spectrum. Studies of QPOs have demonstrated immense ability to understand thes…