284 citations · 4.2k across the 130 of their papers we have counts for
135 papers
Equilibrium states from gravitational collapse of minimally coupled scalar field with non-zero potential
Dipanjan Dey, Koushiki, Pankaj S. Joshi
We study the model of spherically symmetric and spatially homogeneous gravitational collapse of a minimally coupled scalar field. Our study focuses on obtaining the scalar field po…
Imaging ultra-compact objects with radiatively inefficient accretion flows
Saurabh, Parth Bambhaniya, Pankaj S. Joshi
Recent Event Horizon Telescope observations of M87* and Sgr A* strongly suggests the presence of supermassive black hole at their respective cores. In this work, we use the semi-an…
Regular black hole from regular initial data
Karim Mosani, Pankaj S. Joshi
Recently, there has been an interest in exploring black holes that are regular in the sense that the central curvature singularity is avoided. Here, we depict a method to obtain a…
Tidal forces in the Simpson-Visser black-bounce and wormhole spacetimes
Dhruv Arora, Parth Bambhaniya, Dipanjan Dey +1
The concept of regular black holes has gained attention in recent years, especially in the context of quantum gravity theories. In these theories, the existence of singularities is…
The equilibrium condition in gravitational collapse and its application to a cosmological scenario
Dipanjan Dey, N. T. Layden, A. A. Coley +1
We discuss the equilibrium conditions of the gravitational collapse of a spherically symmetric matter cloud. We analyze the spinor structure of a general collapsing space-time and…
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,…