387 citations
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12 papers · 2 filters
Generalized Vaidya spacetime: horizons, conformal symmetries, surface gravity and diagonalization
Vitalii Vertogradov, Dmitriy Kudryavcev
In this paper, the different properties of generalized Vaidya spacetime are considered. We define the location of horizons. We show that the apparent horizon can contain the event…
On phase transitions near black holes
A. A. Grib, Yu. V. Pavlov
It has been shown that temperatures near the horizon of rotating black holes can be about the phase transition temperature in the Standard Model with the Higgs boson. The distance…
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 eternal naked singularity formation in the case of gravitational collapse of generalized Vaydia spacetime
Vitalii Vertogradov
In this paper, we consider the gravitational collapse of generalized Vaidya space-time when the matter satisfies the equation of the state either or , where …
Extraction Energy From Charged Vaidya Black Hole Via Penrose Process
Vitalii Vertogradov
In this paper, we consider the analogy of the Penrose process in Charged Vaidya spacetime. We calculate the border of the generalized ergosphere, in which the charged particles wit…
Geodesics for particles with negative energy in Kerr's metric
Vitalii Vertogradov
According to Penrose effect, particles with negative energy can exist in the ergospheres of rotating black holes. We analyze geodesics for such particles and show that there are no…