Black hole mimickers

Autores
Pérez, Daniela; Romero, Gustavo Esteban; Gourgoulhon, Eric; Novak, Jerome
Año de publicación
2016
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
We show that a spherically symmetric gravitational collapse of a star can result in a bounce ifthe equation of state behaves with sufficient rigidity just before the formation of an event horizon.The relativistic time dilation produced by the strong gravity makes the whole process to be indistinguishable from a black hole on timescales shorter than the Hubble time for a distant observer. Wesolve the Misner-Sharp equations for stellar collapse with a suitable equation of state that reducesto a polytropic at low densities and mimicks an effective cosmological constant during the collapse,finally inverting the direction of the velocity eld of the fluid. We also present some preliminaryresults of numerical simulations of these objects. We conclude that evolving gravitational systemsmight mimick, in this way, most of the properties attributed to static black holes.
Fil: Pérez, Daniela. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina
Fil: Romero, Gustavo Esteban. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina
Fil: Gourgoulhon, Eric. Centre National de la Recherche Scientifique. Observatoire de Paris. Laboratoire de L`univers Et Ses Theories; Francia
Fil: Novak, Jerome. Centre National de la Recherche Scientifique. Observatoire de Paris. Laboratoire de L`univers Et Ses Theories; Francia
28th Texas Symposium on Relativistic Astrophysics
Ginebra
Suiza
Astronomy Department and the Physics Section of the University of Geneva
Materia
Black holes
Gravitation
Singularity
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/218565
Acceder
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spelling Black hole mimickersPérez, DanielaRomero, Gustavo EstebanGourgoulhon, EricNovak, JeromeBlack holesGravitationSingularityhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We show that a spherically symmetric gravitational collapse of a star can result in a bounce ifthe equation of state behaves with sufficient rigidity just before the formation of an event horizon.The relativistic time dilation produced by the strong gravity makes the whole process to be indistinguishable from a black hole on timescales shorter than the Hubble time for a distant observer. Wesolve the Misner-Sharp equations for stellar collapse with a suitable equation of state that reducesto a polytropic at low densities and mimicks an effective cosmological constant during the collapse,finally inverting the direction of the velocity eld of the fluid. We also present some preliminaryresults of numerical simulations of these objects. We conclude that evolving gravitational systemsmight mimick, in this way, most of the properties attributed to static black holes.Fil: Pérez, Daniela. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; ArgentinaFil: Romero, Gustavo Esteban. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; ArgentinaFil: Gourgoulhon, Eric. Centre National de la Recherche Scientifique. Observatoire de Paris. Laboratoire de L`univers Et Ses Theories; FranciaFil: Novak, Jerome. Centre National de la Recherche Scientifique. Observatoire de Paris. Laboratoire de L`univers Et Ses Theories; Francia28th Texas Symposium on Relativistic AstrophysicsGinebraSuizaAstronomy Department and the Physics Section of the University of GenevaTexas Symposia on Relativistic AstrophysicsAchucarro, Ana2016info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectSimposioJournalhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/218565Black hole mimickers; 28th Texas Symposium on Relativistic Astrophysics; Ginebra; Suiza; 2015; 1-6CONICET DigitalCONICETenghttps://indico.cern.ch/event/336103/https://indico.cern.ch/event/336103/page/5620-proceedingsinfo:eu-repo/semantics/altIdentifier/url/https://indico.cern.ch/event/336103/contributions/786749/Internacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:37:04Zoai:ri.conicet.gov.ar:11336/218565instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:37:04.776CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Black hole mimickers
title Black hole mimickers
spellingShingle Black hole mimickers
Pérez, Daniela
Black holes
Gravitation
Singularity
title_short Black hole mimickers
title_full Black hole mimickers
title_fullStr Black hole mimickers
title_full_unstemmed Black hole mimickers
title_sort Black hole mimickers
dc.creator.none.fl_str_mv Pérez, Daniela
Romero, Gustavo Esteban
Gourgoulhon, Eric
Novak, Jerome
author Pérez, Daniela
author_facet Pérez, Daniela
Romero, Gustavo Esteban
Gourgoulhon, Eric
Novak, Jerome
author_role author
author2 Romero, Gustavo Esteban
Gourgoulhon, Eric
Novak, Jerome
author2_role author
author
author
dc.contributor.none.fl_str_mv Achucarro, Ana
dc.subject.none.fl_str_mv Black holes
Gravitation
Singularity
topic Black holes
Gravitation
Singularity
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We show that a spherically symmetric gravitational collapse of a star can result in a bounce ifthe equation of state behaves with sufficient rigidity just before the formation of an event horizon.The relativistic time dilation produced by the strong gravity makes the whole process to be indistinguishable from a black hole on timescales shorter than the Hubble time for a distant observer. Wesolve the Misner-Sharp equations for stellar collapse with a suitable equation of state that reducesto a polytropic at low densities and mimicks an effective cosmological constant during the collapse,finally inverting the direction of the velocity eld of the fluid. We also present some preliminaryresults of numerical simulations of these objects. We conclude that evolving gravitational systemsmight mimick, in this way, most of the properties attributed to static black holes.
Fil: Pérez, Daniela. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina
Fil: Romero, Gustavo Esteban. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina
Fil: Gourgoulhon, Eric. Centre National de la Recherche Scientifique. Observatoire de Paris. Laboratoire de L`univers Et Ses Theories; Francia
Fil: Novak, Jerome. Centre National de la Recherche Scientifique. Observatoire de Paris. Laboratoire de L`univers Et Ses Theories; Francia
28th Texas Symposium on Relativistic Astrophysics
Ginebra
Suiza
Astronomy Department and the Physics Section of the University of Geneva
description We show that a spherically symmetric gravitational collapse of a star can result in a bounce ifthe equation of state behaves with sufficient rigidity just before the formation of an event horizon.The relativistic time dilation produced by the strong gravity makes the whole process to be indistinguishable from a black hole on timescales shorter than the Hubble time for a distant observer. Wesolve the Misner-Sharp equations for stellar collapse with a suitable equation of state that reducesto a polytropic at low densities and mimicks an effective cosmological constant during the collapse,finally inverting the direction of the velocity eld of the fluid. We also present some preliminaryresults of numerical simulations of these objects. We conclude that evolving gravitational systemsmight mimick, in this way, most of the properties attributed to static black holes.
publishDate 2016
dc.date.none.fl_str_mv 2016
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Simposio
Journal
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/218565
Black hole mimickers; 28th Texas Symposium on Relativistic Astrophysics; Ginebra; Suiza; 2015; 1-6
CONICET Digital
CONICET
url http://hdl.handle.net/11336/218565
identifier_str_mv Black hole mimickers; 28th Texas Symposium on Relativistic Astrophysics; Ginebra; Suiza; 2015; 1-6
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://indico.cern.ch/event/336103/
https://indico.cern.ch/event/336103/page/5620-proceedings
info:eu-repo/semantics/altIdentifier/url/https://indico.cern.ch/event/336103/contributions/786749/
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv Texas Symposia on Relativistic Astrophysics
publisher.none.fl_str_mv Texas Symposia on Relativistic Astrophysics
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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