Black hole in asymmetric cosmological bounce

We determine the causal structure of the McVittie spacetime for a cosmological model with an asymmetric bounce. The analysis includes the computation of trapping horizons, regular, trapped, and anti-trapped regions, and the integration of the trajectories of radial null geodesics before, during, and...

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Detalles Bibliográficos
Autores principales: Pérez, Daniela, Pérez Bergliaffa, Santiago Esteban, Romero, Gustavo Esteban
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2021
Materias:
Astronomía
Black holes
General Relativity
Cosmology
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/124532
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
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record_format dspace
spelling I19-R120-10915-1245322023-06-07T14:18:03Z http://sedici.unlp.edu.ar/handle/10915/124532 issn:0004-6337 issn:1521-3994 Black hole in asymmetric cosmological bounce Pérez, Daniela Pérez Bergliaffa, Santiago Esteban Romero, Gustavo Esteban 2021 2021-09-09T16:29:15Z en Astronomía Black holes General Relativity Cosmology We determine the causal structure of the McVittie spacetime for a cosmological model with an asymmetric bounce. The analysis includes the computation of trapping horizons, regular, trapped, and anti-trapped regions, and the integration of the trajectories of radial null geodesics before, during, and after the bounce. We find a trapped region since the beginning of the contracting phase up to shortly before the bounce, thus showing the existence of a black hole. When the universe reaches a certain minimum scale in the contracting phase, the trapping horizons disappear and the central singularity becomes naked. These results suggest that neither a contracting nor an expanding universe can accommodate a black hole at all times. Facultad de Ciencias Astronómicas y Geofísicas Instituto Argentino de Radioastronomía Articulo Preprint http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf 69-74
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Astronomía
Black holes
General Relativity
Cosmology
spellingShingle Astronomía
Black holes
General Relativity
Cosmology
Pérez, Daniela
Pérez Bergliaffa, Santiago Esteban
Romero, Gustavo Esteban
Black hole in asymmetric cosmological bounce
topic_facet Astronomía
Black holes
General Relativity
Cosmology
description We determine the causal structure of the McVittie spacetime for a cosmological model with an asymmetric bounce. The analysis includes the computation of trapping horizons, regular, trapped, and anti-trapped regions, and the integration of the trajectories of radial null geodesics before, during, and after the bounce. We find a trapped region since the beginning of the contracting phase up to shortly before the bounce, thus showing the existence of a black hole. When the universe reaches a certain minimum scale in the contracting phase, the trapping horizons disappear and the central singularity becomes naked. These results suggest that neither a contracting nor an expanding universe can accommodate a black hole at all times.
format Articulo
Preprint
author Pérez, Daniela
Pérez Bergliaffa, Santiago Esteban
Romero, Gustavo Esteban
author_facet Pérez, Daniela
Pérez Bergliaffa, Santiago Esteban
Romero, Gustavo Esteban
author_sort Pérez, Daniela
title Black hole in asymmetric cosmological bounce
title_short Black hole in asymmetric cosmological bounce
title_full Black hole in asymmetric cosmological bounce
title_fullStr Black hole in asymmetric cosmological bounce
title_full_unstemmed Black hole in asymmetric cosmological bounce
title_sort black hole in asymmetric cosmological bounce
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/124532
work_keys_str_mv AT perezdaniela blackholeinasymmetriccosmologicalbounce
AT perezbergliaffasantiagoesteban blackholeinasymmetriccosmologicalbounce
AT romerogustavoesteban blackholeinasymmetriccosmologicalbounce
_version_ 1768268489550725120

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