Zobrazeno 1 - 10
of 896
pro vyhledávání: '"Joshi Pankaj"'
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 electromagnetic fields. Utilizing numerical simulations, we analyze t
Externí odkaz:
http://arxiv.org/abs/2407.19738
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 singularities in terms of deformationally strong singularities. Specifica
Externí odkaz:
http://arxiv.org/abs/2407.19508
Publikováno v:
JCAP07(2024)053
Near-solar mass black holes (BHs) could have been involved in the two recent gravitational wave events, GW190425 and GW190814. Since such a low mass BH cannot be formed via stellar evolution, a model has been proposed based on the core collapse of a
Externí odkaz:
http://arxiv.org/abs/2405.08758
The upcoming discoveries of pulsars orbiting the center of the Milky Way will present unparalleled opportunities to examine the causal structure of the spacetime geometry of Sagittarius A*. In this paper, we investigate the fully relativistic propaga
Externí odkaz:
http://arxiv.org/abs/2405.01835
This paper explores the cosmological implications of a scalar field with a specific potential, crucial for achieving the final equilibrium state of gravitational collapse. We consider a system with two fluids: minimally coupled matter representing du
Externí odkaz:
http://arxiv.org/abs/2404.03901
A spacetime singularity, identified by the existence of incomplete causal geodesics in the spacetime, is called a (Tipler) strong curvature singularity if the volume form acting on independent Jacobi fields along causal geodesics vanishes in the appr
Externí odkaz:
http://arxiv.org/abs/2404.02940
In this article, we investigate the gravitational field of a charged, non-vacuum, non-rotating, spherically symmetric body of mass $M$ assuming a static solution to the Einstein-Maxwell field equations. We demonstrate that the characteristics of peri
Externí odkaz:
http://arxiv.org/abs/2402.02069
Autor:
Joshi, Pankaj S., Bhattacharyya, Sudip
Primordial black hole formation has been discussed widely, when density perturbations in the early universe cause matter to collapse gravitationally, giving rise to these ultra-compact objects. We propose that such a gravitational collapse also gives
Externí odkaz:
http://arxiv.org/abs/2401.14431
Publikováno v:
Eur. Phys. J. C (2024) 84:535
The importance and significance of magnetic fields in the astrophysical scenario is well known. Many domains of astrophysical black hole physics such as polarized shadow image, high energy emitting processes and jet formation are dependent on the beh
Externí odkaz:
http://arxiv.org/abs/2310.08022
In the case of unhindered gravitational collapse of matter cloud governed by the Lemaitre-Tolman-Bondi (LTB) spacetime, the end-state singularity is either locally visible, globally visible or completely hidden. We have a past-null singularity in the
Externí odkaz:
http://arxiv.org/abs/2310.01222