4 papers
Weak Gravitational Lensing: A Brief Overview
Partha Pratim Basumallick, Saheb Das, Bhaswati Mandal +1
Gravitational lensing constitutes one of the most direct observational manifestations of spacetime curvature and provides a powerful probe of compact astrophysical objects. In this…
Radiative and Jet Signatures of Regular Black Holes in Quantum-Corrected Gravity
Chirantana Bhattacharjee, Subhadip Sau, Avijit Mukherjee
We investigate regular rotating black holes predicted by asymptotically safe gravity, where the Newton constant varies with energy scale and modifies the near horizon geometry. The…
Regular Rotating Black Hole: Probing the boundaries of the Radiative Signatures and Jet Power
Subhadip Sau, John W. Moffat
We perform a detailed observational analysis of several galactic X-ray binaries, focusing on the interplay between black hole spin, jet power, and radiative efficiency within the c…
Photon Ring Dimming as a Signature of Photon-Axion Conversion in Janis-Newman-Winicour Naked Singularity
Ayush Hazarika, Premachand Mahapatra, Subhadip Sau
The possible existence of axions in the universe introduces the intriguing possibility of photon-axion conversion in strong magnetic fields, particularly near compact objects like…