21 citations · 41 across the 8 of their papers we have counts for
8 papers
Degeneracy in Accretion Disk Spectra from Naked Singularities and Kerr Black Holes: Application to the AGN MCG-06-30-15
Vishva Patel, Sayantan Bhattacharya, Sudip Bhattacharyya +1
Theoretical studies suggest that gravitational collapse can form either a black hole or a visible (naked) singularity. Identifying observational signatures that distinguish these t…
Energy extraction-driven instability and horizon formation in Kerr-Newman naked singularities and their limiting cases
Vishva Patel
Energy extraction from compact objects has been a central topic in general relativity since the introduction of the Penrose process. In this work we present a unified analysis of r…
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…
Magnetic Penrose Process and Kerr Black Hole Mimickers
Divyesh P. Viththani, Tapobroto Bhanja, Vishva Patel +1
The present study investigates the negative energy orbits and energy extraction efficiency using the magnetic Penrose process in various regular black hole geometries surrounded by…
High Energy Particle Collisions in the vicinity of Naked Singularity
Kauntey Acharya, Parth Bambhaniya, Pankaj S. Joshi +2
In this paper, we investigate particle acceleration and high-energy collisions in the Joshi-Malafarina-Narayan (JMN-1) naked singularity, which, in the absence of an event horizon,…
Energy extraction from Janis-Newman-Winicour naked singularity
Vishva Patel, Kauntey Acharya, Parth Bambhaniya +1
In general, energy extraction methods such as the Penrose process and the magnetic Penrose process are thought to be reliant on the existence of an ergoregion. Inside an ergoregion…
Light trajectory and shadow shape in the rotating naked singularity
Vishva Patel, Divya Tahelyani, Ashok B. Joshi +2
In this paper, we investigate the light trajectories and shadow properties in the rotating version of null naked singularity (NNS) spacetime which is derived using the Newman- Jani…
Rotational energy extraction from the Kerr black hole's mimickers
Vishva Patel, Kauntey Acharya, Parth Bambhaniya +1
In this paper, the Penrose process is being used to extract rotational energy from regular black holes. Initially, we consider the rotating Simpson-Visser regular spacetime which d…