dc.contributor.author |
Malec, Edward |
|
dc.contributor.author |
Ó Murchadha, Niall |
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dc.date.accessioned |
2017-08-29T09:14:26Z |
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dc.date.available |
2017-08-29T09:14:26Z |
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dc.date.issued |
1993 |
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dc.identifier.citation |
Malec, E. and Ó Murchadha, N. (1993) 'Trapped surfaces and spherical closed cosmologies', Physical Review D, 47(4), 1454-1464 (11pp). doi: 10.1103/PhysRevD.47.1454 |
en |
dc.identifier.volume |
47 |
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dc.identifier.issued |
4 |
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dc.identifier.startpage |
1454 |
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dc.identifier.endpage |
1464 |
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dc.identifier.issn |
2470-0010 |
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dc.identifier.issn |
2470-0029 |
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dc.identifier.uri |
http://hdl.handle.net/10468/4592 |
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dc.identifier.doi |
10.1103/PhysRevD.47.1454 |
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dc.description.abstract |
This 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.format.mimetype |
application/pdf |
en |
dc.language.iso |
en |
en |
dc.publisher |
American Physical Society |
en |
dc.relation.uri |
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.47.1454 |
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dc.rights |
© 1993, American Physical Society |
en |
dc.subject |
Stars |
en |
dc.title |
Trapped surfaces and spherical closed cosmologies |
en |
dc.type |
Article (peer-reviewed) |
en |
dc.internal.authorcontactother |
Niall Ó Murchadha, Physics, University College Cork, Cork, Ireland. +353-21-490-3000. Email: niall@ucc.ie |
en |
dc.internal.availability |
Full text available |
en |
dc.description.version |
Published Version |
en |
dc.internal.wokid |
WOS:A1993KN18200024 |
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dc.description.status |
Peer reviewed |
en |
dc.identifier.journaltitle |
Physical Review D |
en |
dc.internal.IRISemailaddress |
niall@ucc.ie |
en |