98 citations · 249 across the 16 of their papers we have counts for
19 papers · 1 filter
Optical appearance of regularized compact objects without an exterior photon sphere
Ashok B. Joshi, Vishva Patel, Parth C. Varasani
Recent observations by the Event Horizon Telescope (EHT) indicate that the shadow of the compact object at our Galaxy's center (Sgr A*) closely resembles that of a Schwarzschild bl…
Thermodynamic Phase Transitions and Quantum Entropy Corrections in the Simpson-Visser Regular Black Hole
Vinayak Joshi, Ashok B. Joshi
Regular black holes offer a compelling framework to explore the consequences of resolving the central singularity of standard black holes. Using the Simpson-Visser ``black-bounce"…
Tidal disruption of a neutron star near naked singularity
Ashok B. Joshi, Pankaj S. Joshi, Sudip Bhattacharyya
We investigate the tidal disruption of a neutron star (NS) near a black hole (BH), and for the first time, to the best of our knowledge, near a naked singularity (NaS). For a BH wi…
Tidal forces in collapsing compact objects
Ashok B. Joshi, Dipanjan Dey, Pankaj S. Joshi +1
In this work, we investigate tidal forces in the Lemaitre-Tolman-Bondi (LTB) metric, focusing on both hidden and locally visible singularities. We discuss the strength of these sin…
Spacetime singularities and caustic of outgoing null hypersurfaces
Ashok B. Joshi
In this paper, we investigate the caustic point developed by outgoing null hypersurfaces and the behavior of null curves. We analyze three cases: Future, past, and zero caustic poi…
Particle motion and tidal force in a non-vacuum-charged naked singularity
Divyesh P. Viththani, Ashok B. Joshi, Tapobroto Bhanja +1
In this article, we investigate the gravitational field of a charged, non-vacuum, non-rotating, spherically symmetric body of mass assuming a static solution to the Einstein-Ma…