Results 1 to 10 of about 5,499 (115)

Gravitational Waves from Gravitational Collapse [PDF]

open access: yesLiving Reviews in Relativity, 2011
Gravitational-wave emission from stellar collapse has been studied for nearly four decades. Current state-of-the-art numerical investigations of collapse include those that use progenitors with more realistic angular momentum profiles, properly treat ...
Chris Fryer
exaly   +4 more sources

On the quantum corrected gravitational collapse

open access: yesPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2015
Based on a previously found general class of quantum improved exact solutions composed of non-interacting (dust) particles, we model the gravitational collapse of stars.
Ramon Torres
exaly   +3 more sources

Gravitational Waves from Gravitational Collapse

open access: yesLiving Reviews in Relativity, 2003
Gravitational wave emission from the gravitational collapse of massive stars has been studied for more than three decades. Current state-of-the-art numerical investigations of collapse include those that use progenitors with more realistic angular ...
Chris Fryer
exaly   +2 more sources

Matter and gravitons in the gravitational collapse

open access: yesPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2016
We consider the effects of gravitons in the collapse of baryonic matter that forms a black hole. We first note that the effective number of (soft off-shell) gravitons that account for the (negative) Newtonian potential energy generated by the baryons is ...
Roberto Casadio   +2 more
exaly   +3 more sources

Gravitational quantum collapse in dilute systems

open access: yesComptes Rendus. Physique, 2022
Penrose has suggested that large fluctuations of the gravitational energy of quantum systems, resulting from fluctuations of its density in space, may induce a quantum collapse mechanism [1], but he did not propose a precise dynamics for this process. We
Laloë, Franck
doaj   +1 more source

Gravitational collapse in Rastall gravity

open access: yesPhysics Letters B, 2019
We study spherically symmetric gravitational collapse of a homogeneous perfect fluid in Rastall gravity. Considering a linear equation of state (EoS) for the fluid profiles, we examine the conditions under which the collapse scenario could end in a ...
A. H. Ziaie, H. Moradpour, S. Ghaffari
doaj   +1 more source

Gravitational Wave Speed: Undefined. Experiments Proposed [PDF]

open access: yesResearch Ideas and Outcomes, 2018
Since changes in all 4 dimensions of spacetime are components of displacement for gravitational waves, a theoretical result is presented that their speed is undefined, and that the Theory of Relativity is not reliable to predict their speed ...
Daniel Russell
doaj   +2 more sources

The nature of the naked singularity in generalized Vaidya spacetime and white hole geodesics

open access: yesPhysics of Complex Systems, 2021
This paper gives conditions to the energy-momentum tensor when the gravitational collapse of generalized Vaidya spacetime results in a naked singularity.
Виталий Дмитриевич Вертоградов
doaj   +1 more source

On the Induced Gravitational Collapse

open access: yesEPJ Web of Conferences, 2018
The induced gravitational collapse (IGC) paradigm has been applied to explain the long gamma ray burst (GRB) associated with type Ic supernova, and recently the Xray flashes (XRFs).
M. Becerra Laura   +4 more
doaj   +1 more source

GRAVITATIONAL COLLAPSE OF STARS AND THE METHODS OF ITS OBSERVATIONS

open access: yesOdessa Astronomical Publications, 2016
It is present a review of the models of the later stages of stellar evolution and the mechanisms of the generation of neutrinos, charged particles and electromagnetic radiation during the gravitational collapse of stars.
V. G. Kryvdyk
doaj   +1 more source

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