Results 71 to 80 of about 707,832 (374)

Gravitational Radiation from Cylindrical Naked Singularity

, 2005
We construct an approximate solution which describes the gravitational emission from a naked singularity formed by the gravitational collapse of a cylindrical thick shell composed of dust. The assumed situation is that the collapsing speed of the dust is
C. Cutler, K. Nakao, K. S. Thorne, Ken-ichi Nakao, P. Joshi, R. Penrose, R. M. Wald, S. W. Hawking, S. W. Hawking, T. Nakamura, T. Nakamura, T. Nakamura, T. A. Morgan, Yoshiyuki Morisawa   +13 more
core   +1 more source

Gravitational deflection of massive body around naked singularity

Nuclear Physics B
Spacetime singularity is not observed directly as it is covered by event horizon. Naked singularities may be formed due to gravitational collapse without an event horizon. Therefore, cosmic censorship conjecture entails advanced ascertainment.
Md Khalid Hossain, Keita Takizawa, Anikul Islam, Shyam Das, Farook Rahaman   +4 more
doaj   +1 more source

Classical and quantum equations of motion of an n-dimensional BTZ black hole

Physics Letters B, 2016
We investigate the gravitational collapse of a non-rotating n-dimensional BTZ black hole in AdS space in the context of both classical and quantum mechanics.
Eric Greenwood
doaj   +1 more source

Quantum gravitational collapse: non-singularity and non-locality [PDF]

, 2008
We investigate gravitational collapse in the context of quantum mechanics. We take primary interest in the behavior of the collapse near the horizon and near the origin (classical singularity) from the point of view of an infalling observer.
Eric Greenwood, D. Stojkovic
semanticscholar   +1 more source

Gravity with perimeter action and gravitational singularities

Physics Letters B, 2021
16 pages, 3 figures, the references and an extended note are ...
openaire   +4 more sources

Negative Pressure and Naked Singularities in Spherical Gravitational Collapse [PDF]

, 1996
Assuming the weak energy condition, we study the nature of the non-central shell-focussing singularity which can form in the gravitational collapse of a spherical compact object in classical general relativity.
Clarke C J S, Cooperstock F I, Dwivedi I H, F I Cooperstock, Jhingan S, Joshi P S, Lifshitz E M, P S Joshi, Podurets M A, S Jhingan, Singh T P, T P Singh, Wald R M, Wald R M   +13 more
core   +3 more sources

Anisotropic Multiverse with Varying c and G and Study of Its Thermodynamics

Universe, 2022
We assume the anisotropic model of the Universe in the framework of a varying speed of light c and a varying gravitational constant G theories and study different types of singularities.
Ujjal Debnath, Soumak Nag
doaj   +1 more source

The stochastic gravitational-wave background in the absence of horizons [PDF]

Classical and quantum gravity, 2018
Gravitational-wave astronomy has the potential to explore one of the deepest and most puzzling aspects of Einstein’s theory: the existence of black holes.
E. Barausse, R. Brito, V. Cardoso, I. Dvorkin, P. Pani   +4 more
semanticscholar   +1 more source

Singularities in quantum corrected space-times

Physics Letters B, 2020
In this paper we consider a static and regular fluid generating a locally spherically symmetric and time-independent space-time and calculate the leading quantum corrections to the metric to first order in curvature.
Xavier Calmet, Roberto Casadio, Folkert Kuipers   +2 more
doaj   +1 more source

Pulsar timing array observations as possible hints for nonsingular cosmology

European Physical Journal C: Particles and Fields, 2023
Recent pulsar timing array (PTA) experiments have reported strong evidence of the stochastic gravitational wave background (SGWB). If interpreted as primordial gravitational waves (GWs), the signal favors a strongly blue-tilted spectrum.
Mian Zhu, Gen Ye, Yong Cai
doaj   +1 more source