3 papers
gr-qc2026
A note on methods for computing the critical curve of Kerr-like black holes
Siddharth Kumar Sahoo, Indrani Banerjee
This study systematically compares Bardeen's, de Vries's, and Grenzebach et al.'s celestial coordinate definitions of the critical curve ("shadow") of Kerr-like black holes. We fin…
gr-qc2026
Investigating the interplay of the braneworld gravity and the plasma environment on the black hole shadow
Siddharth Kumar Sahoo, Indrani Banerjee
We investigate the shadow of a rotating braneworld black hole in dispersive plasma environments and assess the potential of the Event Horizon Telescope (EHT) observations to constr…
gr-qc2025
Deciphering signatures of Kerr-Sen black holes in presence of plasma from the Event Horizon Telescope data
Siddharth Kumar Sahoo, Indrani Banerjee
The present work explores the role of the dilaton charge and the plasma environment in explaining the observed images of M87* and Sgr A*. Dilaton charges are associated with…