Trapped surfaces and spherical closed cosmologies

dc.contributor.authorMalec, Edward
dc.contributor.authorÓ Murchadha, Niall
dc.date.accessioned2017-08-29T09:14:26Z
dc.date.available2017-08-29T09:14:26Z
dc.date.issued1993
dc.description.abstractThis Article (peer-reviewed) gives necessary and sufficient conditions for the formation of trapped surfaces in spherically symmetric initial data defined on a closed manifold. Such trapped surfaces surround a region in which there occurs an enhancement of matter over the average. The conditions are posed directly in terms of physical variables and show that what one needs is a relatively large amount of excess matter confined to a small volume. The expansion of the Universe and an outward flow of matter oppose the formation of trapped surfaces; an inward flow of matter helps. The model can be regarded as a Friedmann-Lemaitre-Walker cosmology with localized spherical inhomogeneities. We show that the total excess mass cannot be too large.en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationMalec, E. and Ó Murchadha, N. (1993) 'Trapped surfaces and spherical closed cosmologies', Physical Review D, 47(4), 1454-1464 (11pp). doi: 10.1103/PhysRevD.47.1454en
dc.identifier.doi10.1103/PhysRevD.47.1454
dc.identifier.endpage1464
dc.identifier.issn2470-0010
dc.identifier.issn2470-0029
dc.identifier.issued4
dc.identifier.journaltitlePhysical Review Den
dc.identifier.startpage1454
dc.identifier.urihttps://hdl.handle.net/10468/4592
dc.identifier.volume47
dc.language.isoenen
dc.publisherAmerican Physical Societyen
dc.relation.urihttps://journals.aps.org/prd/abstract/10.1103/PhysRevD.47.1454
dc.rights© 1993, American Physical Societyen
dc.subjectStarsen
dc.titleTrapped surfaces and spherical closed cosmologiesen
dc.typeArticle (peer-reviewed)en
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