FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3096546720> ?p ?o ?g. }

• W3096546720 endingPage "339" @default.
• W3096546720 startingPage "331" @default.
• W3096546720 abstract "Some dynamical aspects of gravitational collapse are explored in this paper. A timedependent spherically symmetric metric is proposed and the corresponding Einstein field equations are derived. An ultrarelativistic dust-like stress-momentum tensor is considered to obtain analytical solutions of these equations, with the perfect fluid consisting of two purely radial fluxes — the inwards flux of collapsing matter and the outwards flux of thermally emitted radiation. Thermal emission is calculated by means of a simplistic but illustrative model of uninteracting collapsing shells. Our results show an asymptotic approach to a maximal space-time deformation without the formation of event horizons. The size of the body is slightly larger than the Schwarzschild radius during most of its lifetime, so that there is no contradiction with either observations or previous theorems on black holes. The relation of the latter with our results is scrutinized in detail. The aim of this paper is to discuss several open problems of conceptual interest concerning black holes and, in particular, to elaborate a simple model of dust-like spherically symmetric gravitational collapse with account of both the inwards flux of the collapsing matter and the outwards flux of emitted thermal radiation. We illustrate how the latter may avoid the formation of event horizons. The metric considered in this work is time-dependent, unlike the Schwarzschild one. Spherical polar coordinates will be used and there will be no need for analytical extensions (such as the one given by the Kruskal-Szekeres chart) because the occurrence of an event horizon at the Schwarzschild radius will be avoided. In Sec. 2 the main historical events concerning the development of the well-known concept of black hole are reviewed and its precise significance is shortly but precisely detailed. In Sec. 3 some open problems of the common black hole model are pointed out and their relationship with the corresponding historical findings is emphasized. Section 4 deals with the development of the metric of the present model: First of all, in subsec. 4.1 a time-dependent spherically symmetric metric in spherical polar coordinates is presented and the corresponding Einstein field equations are specified. Secondly, a dust-like energy momentum tensor for a purely radial motion with account of an ultrarelativistic collapsing matter and thermally emitted radiation is obtained in subsec. 4.2. Temporal evolution of the metric components is studied in subsec. 4.3, with the absence of emitted thermal radiation being detailed as a particular case. Fourthly, in subsec. 4.4 it is shown that there should exist a limit where the inwards flux of collapsing matter and the outwards flux of thermal radiation become compensated. It is also shown the asymptotic character of the approximation to this limit. Some additional considerations about the total mass and the edge of the collapsing body will be made in subsec. 4.5. Finally, our results are discussed in Sec. 5, paying a special attention to the plausibility of the di erent hypothesis and the implications of their alternatives. 2 Important historical results concerning black holes" @default.
• W3096546720 created "2020-11-09" @default.
• W3096546720 creator A5061636843 @default.
• W3096546720 date "2015-10-01" @default.
• W3096546720 modified "2023-09-27" @default.
• W3096546720 title "A Model of Dust-like Spherically Symmetric Gravitational Collapse without Event Horizon Formation" @default.
• W3096546720 cites W1525335326 @default.
• W3096546720 cites W1548339634 @default.
• W3096546720 cites W1629715550 @default.
• W3096546720 cites W1648978915 @default.
• W3096546720 cites W1964856244 @default.
• W3096546720 cites W1966021391 @default.
• W3096546720 cites W1996650212 @default.
• W3096546720 cites W2024696088 @default.
• W3096546720 cites W2029403139 @default.
• W3096546720 cites W2032676535 @default.
• W3096546720 cites W2036662279 @default.
• W3096546720 cites W2065805883 @default.
• W3096546720 cites W2068444636 @default.
• W3096546720 cites W2089466209 @default.
• W3096546720 cites W2100473402 @default.
• W3096546720 cites W2107097129 @default.
• W3096546720 cites W2113211960 @default.
• W3096546720 cites W2146478425 @default.
• W3096546720 cites W2185773150 @default.
• W3096546720 cites W2225468140 @default.
• W3096546720 cites W2267350356 @default.
• W3096546720 cites W2480735324 @default.
• W3096546720 cites W3105563464 @default.
• W3096546720 cites W3105892406 @default.
• W3096546720 hasPublicationYear "2015" @default.
• W3096546720 type Work @default.
• W3096546720 sameAs 3096546720 @default.
• W3096546720 citedByCount "2" @default.
• W3096546720 countsByYear W30965467202016 @default.
• W3096546720 countsByYear W30965467202021 @default.
• W3096546720 crossrefType "journal-article" @default.
• W3096546720 hasAuthorship W3096546720A5061636843 @default.
• W3096546720 hasConcept C115304011 @default.
• W3096546720 hasConcept C118396296 @default.
• W3096546720 hasConcept C121332964 @default.
• W3096546720 hasConcept C124017977 @default.
• W3096546720 hasConcept C136125196 @default.
• W3096546720 hasConcept C147452769 @default.
• W3096546720 hasConcept C148292158 @default.
• W3096546720 hasConcept C178635117 @default.
• W3096546720 hasConcept C2779662365 @default.
• W3096546720 hasConcept C38652104 @default.
• W3096546720 hasConcept C41008148 @default.
• W3096546720 hasConcept C44870925 @default.
• W3096546720 hasConcept C48286519 @default.
• W3096546720 hasConcept C74650414 @default.
• W3096546720 hasConcept C95086748 @default.
• W3096546720 hasConceptScore W3096546720C115304011 @default.
• W3096546720 hasConceptScore W3096546720C118396296 @default.
• W3096546720 hasConceptScore W3096546720C121332964 @default.
• W3096546720 hasConceptScore W3096546720C124017977 @default.
• W3096546720 hasConceptScore W3096546720C136125196 @default.
• W3096546720 hasConceptScore W3096546720C147452769 @default.
• W3096546720 hasConceptScore W3096546720C148292158 @default.
• W3096546720 hasConceptScore W3096546720C178635117 @default.
• W3096546720 hasConceptScore W3096546720C2779662365 @default.
• W3096546720 hasConceptScore W3096546720C38652104 @default.
• W3096546720 hasConceptScore W3096546720C41008148 @default.
• W3096546720 hasConceptScore W3096546720C44870925 @default.
• W3096546720 hasConceptScore W3096546720C48286519 @default.
• W3096546720 hasConceptScore W3096546720C74650414 @default.
• W3096546720 hasConceptScore W3096546720C95086748 @default.
• W3096546720 hasIssue "4" @default.
• W3096546720 hasLocation W30965467201 @default.
• W3096546720 hasOpenAccess W3096546720 @default.
• W3096546720 hasPrimaryLocation W30965467201 @default.
• W3096546720 hasRelatedWork W118269400 @default.
• W3096546720 hasRelatedWork W1579652621 @default.
• W3096546720 hasRelatedWork W1617854408 @default.
• W3096546720 hasRelatedWork W1648417087 @default.
• W3096546720 hasRelatedWork W1678572007 @default.
• W3096546720 hasRelatedWork W1964451222 @default.
• W3096546720 hasRelatedWork W2076913060 @default.
• W3096546720 hasRelatedWork W2134146476 @default.
• W3096546720 hasRelatedWork W2313551019 @default.
• W3096546720 hasRelatedWork W2576374847 @default.
• W3096546720 hasRelatedWork W2750784286 @default.
• W3096546720 hasRelatedWork W2904559076 @default.
• W3096546720 hasRelatedWork W2975572498 @default.
• W3096546720 hasRelatedWork W299470522 @default.
• W3096546720 hasRelatedWork W3098236762 @default.
• W3096546720 hasRelatedWork W3099364553 @default.
• W3096546720 hasRelatedWork W3100974642 @default.
• W3096546720 hasRelatedWork W3102284564 @default.
• W3096546720 hasRelatedWork W3104603532 @default.
• W3096546720 hasRelatedWork W3106445619 @default.
• W3096546720 hasVolume "11" @default.
• W3096546720 isParatext "false" @default.
• W3096546720 isRetracted "false" @default.
• W3096546720 magId "3096546720" @default.
• W3096546720 workType "article" @default.