Utilize este identificador para referenciar este registo: http://hdl.handle.net/1822/59047

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dc.contributor.authorGarcía-Parrado Gómez-Lobo, Alfonsopor
dc.contributor.authorMena, Filipe C.por
dc.date.accessioned2019-02-12T17:00:03Z-
dc.date.issued2019-06-
dc.date.submitted2018-02-
dc.identifier.issn0926-2245por
dc.identifier.urihttp://hdl.handle.net/1822/59047-
dc.description.abstractUsing the Sparling form and a geometric construction adapted to spacetimes with a 2-dimensional isometry group, we analyse a quasi-local measure of gravitational energy. We then study the gravitational radiation through spacetime junctions in cylindrically symmetric models of gravitational collapse to singularities. The models result from the matching of collapsing dust fluids interiors with gravitational wave exteriors, given by the Einstein-Rosen type solutions. For a given choice of a frame adapted to the symmetry of the matching hypersurface, we are able to compute the total gravitational energy radiated during the collapse and state whether the gravitational radiation is incoming or outgoing, in each case. This also enables us to distinguish whether a gravitational collapse is being enhanced by the gravitational radiation.por
dc.description.sponsorshipFundação para a Ciência e a Tecnologia Projects Est-OE/MAT/UI0013/2014, PTDC/MAT-ANA/1275/2014 and CMAT, Univ. Minho, through FEDER Funds COMPETE. We also thank the Erwin Schrödinger International Institute for Mathematical Physics, ESI, where part of this work has been done. FCM thanks Fundação para a Ciência e a Tecnologia for grant SFRH/BSAB/130242/2017. AGP thanks the financial support from Grant 14-37086G of the Czech Science Foundation and the partial support from the projects IT956-16 (“Eusko Jaurlaritza”, Spain), FIS2014-57956-P (“Ministerio de Economía y Competitividad”, Spain)por
dc.language.isoengpor
dc.publisherElsevierpor
dc.relationinfo:eu-repo/grantAgreement/FCT/5876/135888/PTpor
dc.rightsclosedAccesspor
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/por
dc.subjectQuasi-local energypor
dc.subjectGravitational wavespor
dc.subjectSparling formpor
dc.titleGravitational radiation and the evolution of gravitational collapse in cylindrical symmetrypor
dc.typearticlepor
dc.peerreviewedyespor
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S092622451830069Xpor
degois.publication.firstPage29por
degois.publication.lastPage46por
degois.publication.volume64por
dc.identifier.essn1872-6984por
dc.identifier.doi10.1016/j.difgeo.2019.02.003por
dc.subject.fosCiências Naturais::Matemáticaspor
dc.description.publicationversioninfo:eu-repo/semantics/publishedVersionpor
sdum.journalDifferential Geometry and its Applicationspor
Aparece nas coleções:CMAT - Artigos em revistas com arbitragem / Papers in peer review journals

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