Modeling the polarization of high-energy radiation from accreting black holes: A case study of XTE J1118+480
- Autores
- Vieyro, Florencia Laura; Romero, Gustavo Esteban; Chaty, S.
- Año de publicación
- 2016
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Context. The high-energy emission (400 keV-2 MeV) of Cygnus X-1, which is the best-studied Galactic black hole, was recently found to be strongly polarized. The origin of this radiation is still unknown. Aims. We suggest that the emission is the result of non-thermal processes in the hot corona around the accreting compact object and study the polarization of high-energy radiation that is expected for black hole binaries. Methods. Two contributions to the total magnetic field were taken into account in our study: a small-scale random component related to the corona, and an ordered magnetic field associated with the accretion disk. The degree of polarization of gamma-ray emission for this particular geometry was estimated together with the angle of the polarization vector. Results. We obtain that the configuration of corona plus disk can account for the high degree of polarization of gamma-rays that are detected in galactic black holes and does not need to invoke a relativistic jet. We make specific predictions for sources in a low-hard state. In particular, the model is applied to the transient source XTE J1118+480. We show that if a new outburst of XTE J1118+480 is observed, then its gamma-ray polarization should be measurable by future instruments, such as ASTRO-H or the proposed ASTROGAM.
Fil: Vieyro, Florencia Laura. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - la Plata. Instituto Argentino de Radioastronomia; Argentina. Universidad Nacional de la Plata; Argentina
Fil: Romero, Gustavo Esteban. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - la Plata. Instituto Argentino de Radioastronomia; Argentina. Universidad Nacional de la Plata; Argentina
Fil: Chaty, S.. Institut Universitaire de France; Francia. Cea Saclay; Francia - Materia
-
GAMMA RAYS: GENERAL
POLARIZATION
STARS: INDIVIDUAL: XTE J1118+480
X-RAYS: BINARIES - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/17475
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oai:ri.conicet.gov.ar:11336/17475 |
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3498 |
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CONICET Digital (CONICET) |
spelling |
Modeling the polarization of high-energy radiation from accreting black holes: A case study of XTE J1118+480Vieyro, Florencia LauraRomero, Gustavo EstebanChaty, S.GAMMA RAYS: GENERALPOLARIZATIONSTARS: INDIVIDUAL: XTE J1118+480X-RAYS: BINARIEShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Context. The high-energy emission (400 keV-2 MeV) of Cygnus X-1, which is the best-studied Galactic black hole, was recently found to be strongly polarized. The origin of this radiation is still unknown. Aims. We suggest that the emission is the result of non-thermal processes in the hot corona around the accreting compact object and study the polarization of high-energy radiation that is expected for black hole binaries. Methods. Two contributions to the total magnetic field were taken into account in our study: a small-scale random component related to the corona, and an ordered magnetic field associated with the accretion disk. The degree of polarization of gamma-ray emission for this particular geometry was estimated together with the angle of the polarization vector. Results. We obtain that the configuration of corona plus disk can account for the high degree of polarization of gamma-rays that are detected in galactic black holes and does not need to invoke a relativistic jet. We make specific predictions for sources in a low-hard state. In particular, the model is applied to the transient source XTE J1118+480. We show that if a new outburst of XTE J1118+480 is observed, then its gamma-ray polarization should be measurable by future instruments, such as ASTRO-H or the proposed ASTROGAM.Fil: Vieyro, Florencia Laura. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - la Plata. Instituto Argentino de Radioastronomia; Argentina. Universidad Nacional de la Plata; ArgentinaFil: Romero, Gustavo Esteban. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - la Plata. Instituto Argentino de Radioastronomia; Argentina. Universidad Nacional de la Plata; ArgentinaFil: Chaty, S.. Institut Universitaire de France; Francia. Cea Saclay; FranciaEdp Sciences2016-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/17475Vieyro, Florencia Laura; Romero, Gustavo Esteban; Chaty, S.; Modeling the polarization of high-energy radiation from accreting black holes: A case study of XTE J1118+480; Edp Sciences; Astronomy And Astrophysics; 587; 3-2016; 1-7;630004-6361enginfo:eu-repo/semantics/altIdentifier/url/http://dx.doi.org/10.1051/0004-6361/201526587info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2016/03/aa26587-15/aa26587-15.htmlinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:44:14Zoai:ri.conicet.gov.ar:11336/17475instacron: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 10:44:14.58CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Modeling the polarization of high-energy radiation from accreting black holes: A case study of XTE J1118+480 |
title |
Modeling the polarization of high-energy radiation from accreting black holes: A case study of XTE J1118+480 |
spellingShingle |
Modeling the polarization of high-energy radiation from accreting black holes: A case study of XTE J1118+480 Vieyro, Florencia Laura GAMMA RAYS: GENERAL POLARIZATION STARS: INDIVIDUAL: XTE J1118+480 X-RAYS: BINARIES |
title_short |
Modeling the polarization of high-energy radiation from accreting black holes: A case study of XTE J1118+480 |
title_full |
Modeling the polarization of high-energy radiation from accreting black holes: A case study of XTE J1118+480 |
title_fullStr |
Modeling the polarization of high-energy radiation from accreting black holes: A case study of XTE J1118+480 |
title_full_unstemmed |
Modeling the polarization of high-energy radiation from accreting black holes: A case study of XTE J1118+480 |
title_sort |
Modeling the polarization of high-energy radiation from accreting black holes: A case study of XTE J1118+480 |
dc.creator.none.fl_str_mv |
Vieyro, Florencia Laura Romero, Gustavo Esteban Chaty, S. |
author |
Vieyro, Florencia Laura |
author_facet |
Vieyro, Florencia Laura Romero, Gustavo Esteban Chaty, S. |
author_role |
author |
author2 |
Romero, Gustavo Esteban Chaty, S. |
author2_role |
author author |
dc.subject.none.fl_str_mv |
GAMMA RAYS: GENERAL POLARIZATION STARS: INDIVIDUAL: XTE J1118+480 X-RAYS: BINARIES |
topic |
GAMMA RAYS: GENERAL POLARIZATION STARS: INDIVIDUAL: XTE J1118+480 X-RAYS: BINARIES |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Context. The high-energy emission (400 keV-2 MeV) of Cygnus X-1, which is the best-studied Galactic black hole, was recently found to be strongly polarized. The origin of this radiation is still unknown. Aims. We suggest that the emission is the result of non-thermal processes in the hot corona around the accreting compact object and study the polarization of high-energy radiation that is expected for black hole binaries. Methods. Two contributions to the total magnetic field were taken into account in our study: a small-scale random component related to the corona, and an ordered magnetic field associated with the accretion disk. The degree of polarization of gamma-ray emission for this particular geometry was estimated together with the angle of the polarization vector. Results. We obtain that the configuration of corona plus disk can account for the high degree of polarization of gamma-rays that are detected in galactic black holes and does not need to invoke a relativistic jet. We make specific predictions for sources in a low-hard state. In particular, the model is applied to the transient source XTE J1118+480. We show that if a new outburst of XTE J1118+480 is observed, then its gamma-ray polarization should be measurable by future instruments, such as ASTRO-H or the proposed ASTROGAM. Fil: Vieyro, Florencia Laura. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - la Plata. Instituto Argentino de Radioastronomia; Argentina. Universidad Nacional de la Plata; Argentina Fil: Romero, Gustavo Esteban. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - la Plata. Instituto Argentino de Radioastronomia; Argentina. Universidad Nacional de la Plata; Argentina Fil: Chaty, S.. Institut Universitaire de France; Francia. Cea Saclay; Francia |
description |
Context. The high-energy emission (400 keV-2 MeV) of Cygnus X-1, which is the best-studied Galactic black hole, was recently found to be strongly polarized. The origin of this radiation is still unknown. Aims. We suggest that the emission is the result of non-thermal processes in the hot corona around the accreting compact object and study the polarization of high-energy radiation that is expected for black hole binaries. Methods. Two contributions to the total magnetic field were taken into account in our study: a small-scale random component related to the corona, and an ordered magnetic field associated with the accretion disk. The degree of polarization of gamma-ray emission for this particular geometry was estimated together with the angle of the polarization vector. Results. We obtain that the configuration of corona plus disk can account for the high degree of polarization of gamma-rays that are detected in galactic black holes and does not need to invoke a relativistic jet. We make specific predictions for sources in a low-hard state. In particular, the model is applied to the transient source XTE J1118+480. We show that if a new outburst of XTE J1118+480 is observed, then its gamma-ray polarization should be measurable by future instruments, such as ASTRO-H or the proposed ASTROGAM. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-03 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 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://hdl.handle.net/11336/17475 Vieyro, Florencia Laura; Romero, Gustavo Esteban; Chaty, S.; Modeling the polarization of high-energy radiation from accreting black holes: A case study of XTE J1118+480; Edp Sciences; Astronomy And Astrophysics; 587; 3-2016; 1-7;63 0004-6361 |
url |
http://hdl.handle.net/11336/17475 |
identifier_str_mv |
Vieyro, Florencia Laura; Romero, Gustavo Esteban; Chaty, S.; Modeling the polarization of high-energy radiation from accreting black holes: A case study of XTE J1118+480; Edp Sciences; Astronomy And Astrophysics; 587; 3-2016; 1-7;63 0004-6361 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://dx.doi.org/10.1051/0004-6361/201526587 info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2016/03/aa26587-15/aa26587-15.html |
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.publisher.none.fl_str_mv |
Edp Sciences |
publisher.none.fl_str_mv |
Edp Sciences |
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) |
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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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13.070432 |