Accretion disks around black holes in modified strong gravity
- Autores
- Pérez, Daniela; Romero, Gustavo Esteban; Perez Bergliaffa, Santiago Esteban
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Context. Stellar-mass black holes offer what is perhaps the best scenario to test theories of gravity in the strong-field regime. In particular, f(R) theories, which have been widely discus in a cosmological context, can be constrained through realistic astrophysical models of phenomena around black holes. Aims. We aim at building radiative models of thin accretion disks for both Schwarzschild and Kerr black holes in f(R) gravity. Methods. We study particle motion in f(R)-Schwarzschild and Kerr space-times. Results. We present the spectral energy distribution of the accretion disk around constant Ricci scalar f(R) black holes, and constrain specific f(R) prescriptions using features of these systems. Conclusions. A precise determination of both the spin and accretion rate onto black holes along with X-ray observations of their thermal spectrum might allow to identify deviations of gravity from general relativity. We use recent data on the high-mass X-ray binary Cygnus X-1 to restrict the values of the parameters of a class of f(R) models.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto Argentino de Radioastronomía - Materia
-
Ciencias Astronómicas
Accretion, accretion disks
Black hole physics
Gravitation - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/85006
Ver los metadatos del registro completo
| id |
SEDICI_cf41bfe122bdc1ed4a1eb9a748c9e613 |
|---|---|
| oai_identifier_str |
oai:sedici.unlp.edu.ar:10915/85006 |
| network_acronym_str |
SEDICI |
| repository_id_str |
1329 |
| network_name_str |
SEDICI (UNLP) |
| spelling |
Accretion disks around black holes in modified strong gravityPérez, DanielaRomero, Gustavo EstebanPerez Bergliaffa, Santiago EstebanCiencias AstronómicasAccretion, accretion disksBlack hole physicsGravitationContext. Stellar-mass black holes offer what is perhaps the best scenario to test theories of gravity in the strong-field regime. In particular, <i>f</i>(<i>R</i>) theories, which have been widely discus in a cosmological context, can be constrained through realistic astrophysical models of phenomena around black holes. Aims. We aim at building radiative models of thin accretion disks for both Schwarzschild and Kerr black holes in <i>f</i>(<i>R</i>) gravity. Methods. We study particle motion in <i>f</i>(<i>R</i>)-Schwarzschild and Kerr space-times. Results. We present the spectral energy distribution of the accretion disk around constant Ricci scalar <i>f</i>(<i>R</i>) black holes, and constrain specific <i>f</i>(<i>R</i>) prescriptions using features of these systems. Conclusions. A precise determination of both the spin and accretion rate onto black holes along with X-ray observations of their thermal spectrum might allow to identify deviations of gravity from general relativity. We use recent data on the high-mass X-ray binary Cygnus X-1 to restrict the values of the parameters of a class of <i>f</i>(<i>R</i>) models.Facultad de Ciencias Astronómicas y GeofísicasInstituto Argentino de Radioastronomía2013info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/85006enginfo:eu-repo/semantics/altIdentifier/issn/0004-6361info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201220378info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:16:30Zoai:sedici.unlp.edu.ar:10915/85006Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:16:31.15SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Accretion disks around black holes in modified strong gravity |
| title |
Accretion disks around black holes in modified strong gravity |
| spellingShingle |
Accretion disks around black holes in modified strong gravity Pérez, Daniela Ciencias Astronómicas Accretion, accretion disks Black hole physics Gravitation |
| title_short |
Accretion disks around black holes in modified strong gravity |
| title_full |
Accretion disks around black holes in modified strong gravity |
| title_fullStr |
Accretion disks around black holes in modified strong gravity |
| title_full_unstemmed |
Accretion disks around black holes in modified strong gravity |
| title_sort |
Accretion disks around black holes in modified strong gravity |
| dc.creator.none.fl_str_mv |
Pérez, Daniela Romero, Gustavo Esteban Perez Bergliaffa, Santiago Esteban |
| author |
Pérez, Daniela |
| author_facet |
Pérez, Daniela Romero, Gustavo Esteban Perez Bergliaffa, Santiago Esteban |
| author_role |
author |
| author2 |
Romero, Gustavo Esteban Perez Bergliaffa, Santiago Esteban |
| author2_role |
author author |
| dc.subject.none.fl_str_mv |
Ciencias Astronómicas Accretion, accretion disks Black hole physics Gravitation |
| topic |
Ciencias Astronómicas Accretion, accretion disks Black hole physics Gravitation |
| dc.description.none.fl_txt_mv |
Context. Stellar-mass black holes offer what is perhaps the best scenario to test theories of gravity in the strong-field regime. In particular, <i>f</i>(<i>R</i>) theories, which have been widely discus in a cosmological context, can be constrained through realistic astrophysical models of phenomena around black holes. Aims. We aim at building radiative models of thin accretion disks for both Schwarzschild and Kerr black holes in <i>f</i>(<i>R</i>) gravity. Methods. We study particle motion in <i>f</i>(<i>R</i>)-Schwarzschild and Kerr space-times. Results. We present the spectral energy distribution of the accretion disk around constant Ricci scalar <i>f</i>(<i>R</i>) black holes, and constrain specific <i>f</i>(<i>R</i>) prescriptions using features of these systems. Conclusions. A precise determination of both the spin and accretion rate onto black holes along with X-ray observations of their thermal spectrum might allow to identify deviations of gravity from general relativity. We use recent data on the high-mass X-ray binary Cygnus X-1 to restrict the values of the parameters of a class of <i>f</i>(<i>R</i>) models. Facultad de Ciencias Astronómicas y Geofísicas Instituto Argentino de Radioastronomía |
| description |
Context. Stellar-mass black holes offer what is perhaps the best scenario to test theories of gravity in the strong-field regime. In particular, <i>f</i>(<i>R</i>) theories, which have been widely discus in a cosmological context, can be constrained through realistic astrophysical models of phenomena around black holes. Aims. We aim at building radiative models of thin accretion disks for both Schwarzschild and Kerr black holes in <i>f</i>(<i>R</i>) gravity. Methods. We study particle motion in <i>f</i>(<i>R</i>)-Schwarzschild and Kerr space-times. Results. We present the spectral energy distribution of the accretion disk around constant Ricci scalar <i>f</i>(<i>R</i>) black holes, and constrain specific <i>f</i>(<i>R</i>) prescriptions using features of these systems. Conclusions. A precise determination of both the spin and accretion rate onto black holes along with X-ray observations of their thermal spectrum might allow to identify deviations of gravity from general relativity. We use recent data on the high-mass X-ray binary Cygnus X-1 to restrict the values of the parameters of a class of <i>f</i>(<i>R</i>) models. |
| publishDate |
2013 |
| dc.date.none.fl_str_mv |
2013 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://sedici.unlp.edu.ar/handle/10915/85006 |
| url |
http://sedici.unlp.edu.ar/handle/10915/85006 |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/0004-6361 info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201220378 |
| dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
| eu_rights_str_mv |
openAccess |
| rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.source.none.fl_str_mv |
reponame:SEDICI (UNLP) instname:Universidad Nacional de La Plata instacron:UNLP |
| reponame_str |
SEDICI (UNLP) |
| collection |
SEDICI (UNLP) |
| instname_str |
Universidad Nacional de La Plata |
| instacron_str |
UNLP |
| institution |
UNLP |
| repository.name.fl_str_mv |
SEDICI (UNLP) - Universidad Nacional de La Plata |
| repository.mail.fl_str_mv |
alira@sedici.unlp.edu.ar |
| _version_ |
1844616037982535680 |
| score |
13.070432 |