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181
Radiating stars and Riccati equations in higher dimensions
Published 2023-02-01“…Abstract The objective of this study is to investigate spherically symmetric radiating stars undergoing gravitational collapse, in higher dimensional general relativity, inclusive of acceleration, expansion, shear, an electromagnetic field and a cosmological constant. …”
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182
A non-static quantum inspired spacetime in f(R) gravity: Gravity's rainbow
Published 2020-07-01“…In our quest we have used gravitational collapse as the main tool. The focus is to probe the nature of singularity (black hole or naked singularity) formed out of the collapsing procedure. …”
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183
On some new black hole, wormhole and naked singularity solutions in the free Dirac–Born–Infeld theory
Published 2023-11-01“…By tracking the dynamical gravitational collapse, we enlighten the importance of the isotropy of the pressure for having an horizon as a result, as required by the Cosmic Censorship Conjecture. …”
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184
Collapse in f(R) gravity and the method of R matching
Published 2020-09-01“…In the first, the collapsing metric is considered to be a separable function of the co-moving radius and time, and the collapse is shear-free, and in the second, a non-separable interior solution is considered, that represents gravitational collapse with non-zero shear viscosity. We arrive at novel solutions that indicate the formation of black holes or locally naked singularities, while obeying all the necessary energy conditions. …”
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185
Primordial Black Holes and a Common Origin of Baryons and Dark Matter
Published 2021-12-01“…We propose a scenario in which the gravitational collapse of large inhomogeneities at the quark-hadron epoch generates both the baryon asymmetry and most of the dark matter in the form of primordial black holes (PBHs). …”
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186
Rapid Dust Growth during Hydrodynamic Clumping due to Streaming Instability
Published 2023-01-01“…Streaming instability is considered to be one of the dominant processes in promoting planetesimal formation by the gravitational collapse of dust clumps. The development of streaming instability is expected to form dust clumps in which the local dust density is strongly enhanced and even greater than the Roche density. …”
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187
Charged radiation collapse in Einstein–Gauss–Bonnet gravity
Published 2022-04-01“…Abstract We generalise the continual gravitational collapse of a spherically symmetric radiation shell of matter in five dimensional Einstein–Gauss–Bonnet gravity to include the electromagnetic field. …”
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188
Self-similar solutions and critical behavior in Einstein-Maxwell-dilaton theory sourced by charged null fluids
Published 2019-10-01“…By continuously matching these solutions to flat spacetime along a null hypersurface one can study gravitational collapse analytically. Capitalizing on this idea, we compute the critical exponent defining the power-law behavior of the mass contained within the apparent horizon near the threshold of black hole formation. …”
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189
The Role of Elementary Dimensions in the Creation of the Source of Elementary Particles
Published 2020-12-01“…Quark-gluon plasma, inflation, gravitational collapse, and gravitational lensing provide evidence that supports the elementary dimensions theory presented in this paper.…”
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190
Primordial black hole formation during slow-reheating: a review
Published 2024-03-01“…In the hydrodynamical interpretation of this field during the slow-reheating epoch, the gravitational collapse of primordial fluctuations is subject to conditions on their sphericity, limits on their spin, as well as a maximum velocity dispersion. …”
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191
Non-ideal magnetohydrodynamics on a moving mesh
Published 2021“…As first applications, we investigate the tearing instability in magnetized plasmas and the gravitational collapse of a rotating magnetized gas cloud. …”
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192
An approach to stability analyses in general relativity via symplectic geometry
Published 2019-08-01“…In the second half of this work, we posit that a study of the genericity of a particular black hole or naked singularity spacetime forming as an endstate of gravitational collapse is equivalent to an inquiry of how sensitive the orbits of the symplectic Hamiltonian vector field of general relativity are to changes in initial data. …”
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193
Incorporating a Radiative Hydrodynamics Scheme in the Numerical-Relativity Code BAM
Published 2022-07-01“…Different test simulations, for stars undergoing a neutrino-induced gravitational collapse and for binary neutron stars systems, validate our new implementation. …”
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194
Towards a reliable reconstruction of the power spectrum of primordial curvature perturbation on small scales from GWTC-3
Published 2023-03-01“…Since PBHs could form in the very early Universe through the gravitational collapse of primordial density perturbations, the population of BBHs detected by gravitational waves encodes much information on primordial curvature perturbation. …”
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195
How the Big Bang Ends Up Inside a Black Hole
Published 2022-04-01“…Here we review the idea that cosmic expansion originates instead from gravitational collapse and bounce. The collapse generates a Black Hole (BH) of mass <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>M</mi><mo>≃</mo><mn>5</mn><mo>×</mo><msup><mn>10</mn><mrow><mn>22</mn></mrow></msup><msub><mi>M</mi><mo>⊙</mo></msub></mrow></semantics></math></inline-formula> that formed 25 Gyrs ago. …”
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196
Caldera collapse thresholds correlate with magma chamber dimensions
Published 2023-05-01“…Abstract Explosive caldera-forming eruptions eject voluminous magma during the gravitational collapse of the roof of the magma chamber. Caldera collapse is known to occur by rapid decompression of a magma chamber at shallow depth, however, the thresholds for magma chamber decompression that promotes caldera collapse have not been tested using examples from actual caldera-forming eruptions. …”
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197
Tectonic inversion of compressional structures in the Southern portion of the Paramirim Corridor, Bahia, Brazil
“…Together, data obtained for the structures associated with the late extensional regimen described in the present study suggest that its nucleation is associated with distal and brittle-ductile sectors of the gravitational collapse zone of Araçuaí-West Congo Orogen.…”
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198
Stirred and shaken: Dynamical behavior of boson stars and dark matter cores
Published 2020-12-01“…We also show that the gravitational collapse to a supermassive black hole at the center of a NBS is accompanied by only a small change in the surrounding core. …”
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199
Non-ideal magnetohydrodynamics on a moving mesh
Published 2022“…As first applications, we investigate the tearing instability in magnetized plasmas and the gravitational collapse of a rotating magnetized gas cloud. …”
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200
Entanglement Tsunami: Universal Scaling in Holographic Thermalization
Published 2014“…We consider the time evolution of entanglement entropy after a global quench in a strongly coupled holographic system, whose subsequent equilibration is described in the gravity dual by the gravitational collapse of a thin shell of matter resulting in a black hole. …”
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