21 citations · 60 across the 7 of their papers we have counts for
7 papers
Regular Black Hole from gravitational collapse of dust and radiation
Vitalii Vertogradov
A black hole is the end state of the gravitational collapse of massive stars. However, a typical black hole contains a singularity and to avoid singularity formation we have to vio…
The generalized Vaidya spacetime with polytropic equation of state
Vitalii Vertogradov
The process of the gravitational collapse might lead not only to a black hole but also to naked singularity formation. In this paper, we consider the generalized Vaidya spacetime w…
On the particle collisions during gravitational collapse of Vaidya spacetimes
Vitalii Vertogradov
The center-of-mass energy can be arbitrarily high in Schwarzschild spacetime if one considers the front collision of two particles, one of which moves along so-called white hole ge…
The Negative Energy in Generalized Vaidya Spacetime
Vitalii Vertogradov
In this paper we consider the negative energy problem in generalized Vaidya spacetime. We consider several models when we have the naked singularity as a result of the gravitationa…
The structure of the generalized Vaidya spacetime containing the eternal naked singularity
Vitalii Vertogradov
In this paper the structure of the generalized Vaidya spacetime when the type-II of the matter field satisfies the equation of the state is investigated. Satisfying all energ…
Non-linearity of Vaidya spacetime and forces in the central naked singularity
Vitalii Vertogradov
In this paper we consider non-linear Vaidya spacetime i.e. the case when the mass function has the non-linear form . We prove that the central na…
Causal Structure of Singularity in non-spherical Gravitational Collapse
Dipanjan Dey, Pankaj S. Joshi, Karim Mosani +1
We investigate here the final state of gravitational collapse of a non-spherical and non-marginally bound dust cloud as modeled by the Szekeres spacetime. We show that a directiona…