Results 21 to 30 of about 5,239 (155)
A conjectured upper bound on the Choptuik critical exponents
Nuclear Physics B, 2021 Near-critical type II gravitational collapse is characterized by the formation of arbitrarily small black holes whose horizon radii are described by the simple scaling law rBH∝(p−p⁎)γ, where γ is the matter-dependent Choptuik critical exponent and Δp≡p−p⁎
Shahar Hod
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PARTICLES, NEUTRINO AND PHOTONS IN THE MAGNETOSPHERE OF A COLLAPSING STAR
Odessa Astronomical Publications, 2014 The formation of the stellar magnetosphere during the gravitational collapse is discussed. Primary protons and electrons accelerate in the star’s magnetosphere during its gravitational collapse.
V. G. Kryvdyk
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A perturbative approach to the time-dependent Karmarkar condition
European Physical Journal C: Particles and Fields, 2021 In this work we employ a perturbative approach to study the gravitational collapse of a shear-free radiating star. The collapse proceeds from an initial static core satisfying the time-independent Karmarkar condition and degenerates into a quasi-static ...
Megandhren Govender +3 more
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QUANTIZING GRAVITATIONAL COLLAPSE [PDF]
Quantum Theory and Symmetries, 2004 I summarize some results obtained from a canonical quantization of gravitational collapse. The quantization is carried out in Kuchar variables on the LeMaitre-Tolman-Bondi family of spacetimes. I show how mass quantization, the black hole entropy and Hawking radiation may be understood in these models.
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Quantitative insights into the role of gravitational collapse in major orogenic belts
Annals of Geophysics, 2006 Previous works have proposed gravitational collapse as the driving mechanism of extensional deformation of thickened continental crust. In this work we investigate the physical plausibility of this interpretation for the most important orogenic ...
E. Mantovani, D. Albarello, M. Viti
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Critical phenomena in gravitational collapse [PDF]
Banach Center Publications, 1997 AbstractAs first discovered by Choptuik, the black hole threshold in the space of initial data for general relativity shows both surprising structure and surprising simplicity. Universality, power-law scaling of the black hole mass, and scale echoing have given rise to the term “critical phenomena”.
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Symposium - International Astronomical Union, 1974 In the standard picture of gravitational collapse to a black hole, a key role is played by the hypothesis of cosmic censorship – according to which no naked space-time singularities can result from any collapse. A precise definition of a naked singularity is given here which leads to a strong ‘local’ version of the cosmic censorship hypothesis. This is
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Gravitational collapse in SYK models and Choptuik-like phenomenon
Journal of High Energy Physics, 2019 SYK model is a quantum mechanical model of fermions which is solvable at strong coupling and plays an important role as perhaps the simplest holographic model of quantum gravity and black holes.
Avinash Dhar +4 more
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Gravitational collapse in one dimension [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 14 Pages, 13 Figures.
Schulz, A. E. +3 more
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Physics Letters BWe study for the first time the gravitational waves generated during the collapse of domain walls, incorporating the potential bias in the lattice simulations. The final stages of domain wall collapse are crucial for the production of gravitational waves,
Naoya Kitajima +4 more
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