Gamma-Ray Emission from Be/X-Ray Binaries

Autores
Orellana, Mariana Dominga; Romero, Gustavo Esteban; Cheng, K. S.; Romero, Gustavo Esteban
Año de publicación
2005
Idioma
inglés
Tipo de recurso
parte de libro
Estado
versión publicada
Descripción
Be/X-ray binaries are systems formed by a massive Be star and a magnetized neutron star, usually in an eccentric orbit. The Be star has strong equatorial winds occasionally forming a circumstellar disk. When the neutron star intersects the disk the accretion rate dramatically increases and a transient accretion disk can be formed around the compact object. This disk can last longer than a single orbit in the case of major outbursts. If the disk rotates faster than the neutron star, the Cheng-Ruderman mechanism can produce a current of relativistic protons that would impact onto the disk surface, producing gamma-rays from neutral pion decays and initiating electromagnetic cascades inside the disk. In this paper we present calculations of the evolution of the disk parameters during both major and minor X-ray events, and we discuss the generation of gamma-ray emission at different energies within a variety of models that include both screened and unscreened disks.
Capítulo reimpreso de la revista Astrophysics and Space Science, vol. 297, no. 1-4, un volumen temático que contiene los artículos de la primera reunión dedicada exclusivamente al enfoque de múltiples longitudes de onda para la identificación de fuentes de alta energía (Departamento de Física de la Universidad de Hong Kong, 1 al 4 de junio de 2004).
Facultad de Ciencias Astronómicas y Geofísicas
Instituto Argentino de Radioastronomía
Materia
Astronomía
X-ray binaries
neutron stars
gamma-rays
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/123502
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/123502
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Gamma-Ray Emission from Be/X-Ray BinariesOrellana, Mariana DomingaRomero, Gustavo EstebanCheng, K. S.Romero, Gustavo EstebanAstronomíaX-ray binariesneutron starsgamma-raysBe/X-ray binaries are systems formed by a massive Be star and a magnetized neutron star, usually in an eccentric orbit. The Be star has strong equatorial winds occasionally forming a circumstellar disk. When the neutron star intersects the disk the accretion rate dramatically increases and a transient accretion disk can be formed around the compact object. This disk can last longer than a single orbit in the case of major outbursts. If the disk rotates faster than the neutron star, the Cheng-Ruderman mechanism can produce a current of relativistic protons that would impact onto the disk surface, producing gamma-rays from neutral pion decays and initiating electromagnetic cascades inside the disk. In this paper we present calculations of the evolution of the disk parameters during both major and minor X-ray events, and we discuss the generation of gamma-ray emission at different energies within a variety of models that include both screened and unscreened disks.Capítulo reimpreso de la revista <i>Astrophysics and Space Science</i>, vol. 297, no. 1-4, un volumen temático que contiene los artículos de la primera reunión dedicada exclusivamente al enfoque de múltiples longitudes de onda para la identificación de fuentes de alta energía (Departamento de Física de la Universidad de Hong Kong, 1 al 4 de junio de 2004).Facultad de Ciencias Astronómicas y GeofísicasInstituto Argentino de RadioastronomíaSpringer, Dordrecht2005info:eu-repo/semantics/bookPartinfo:eu-repo/semantics/publishedVersionCapitulo de librohttp://purl.org/coar/resource_type/c_3248info:ar-repo/semantics/parteDeLibroapplication/pdf167-178http://sedici.unlp.edu.ar/handle/10915/123502enginfo:eu-repo/semantics/altIdentifier/isbn/978-1-4020-3214-1info:eu-repo/semantics/altIdentifier/isbn/978-1-4020-3881-5info:eu-repo/semantics/altIdentifier/doi/10.1007/1-4020-3881-x_17info: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:UNLP2025-10-15T11:21:22Zoai:sedici.unlp.edu.ar:10915/123502Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:21:22.523SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Gamma-Ray Emission from Be/X-Ray Binaries
title Gamma-Ray Emission from Be/X-Ray Binaries
spellingShingle Gamma-Ray Emission from Be/X-Ray Binaries
Orellana, Mariana Dominga
Astronomía
X-ray binaries
neutron stars
gamma-rays
title_short Gamma-Ray Emission from Be/X-Ray Binaries
title_full Gamma-Ray Emission from Be/X-Ray Binaries
title_fullStr Gamma-Ray Emission from Be/X-Ray Binaries
title_full_unstemmed Gamma-Ray Emission from Be/X-Ray Binaries
title_sort Gamma-Ray Emission from Be/X-Ray Binaries
dc.creator.none.fl_str_mv Orellana, Mariana Dominga
Romero, Gustavo Esteban
Cheng, K. S.
Romero, Gustavo Esteban
author Orellana, Mariana Dominga
author_facet Orellana, Mariana Dominga
Romero, Gustavo Esteban
Cheng, K. S.
author_role author
author2 Romero, Gustavo Esteban
Cheng, K. S.
author2_role author
author
dc.subject.none.fl_str_mv Astronomía
X-ray binaries
neutron stars
gamma-rays
topic Astronomía
X-ray binaries
neutron stars
gamma-rays
dc.description.none.fl_txt_mv Be/X-ray binaries are systems formed by a massive Be star and a magnetized neutron star, usually in an eccentric orbit. The Be star has strong equatorial winds occasionally forming a circumstellar disk. When the neutron star intersects the disk the accretion rate dramatically increases and a transient accretion disk can be formed around the compact object. This disk can last longer than a single orbit in the case of major outbursts. If the disk rotates faster than the neutron star, the Cheng-Ruderman mechanism can produce a current of relativistic protons that would impact onto the disk surface, producing gamma-rays from neutral pion decays and initiating electromagnetic cascades inside the disk. In this paper we present calculations of the evolution of the disk parameters during both major and minor X-ray events, and we discuss the generation of gamma-ray emission at different energies within a variety of models that include both screened and unscreened disks.
Capítulo reimpreso de la revista <i>Astrophysics and Space Science</i>, vol. 297, no. 1-4, un volumen temático que contiene los artículos de la primera reunión dedicada exclusivamente al enfoque de múltiples longitudes de onda para la identificación de fuentes de alta energía (Departamento de Física de la Universidad de Hong Kong, 1 al 4 de junio de 2004).
Facultad de Ciencias Astronómicas y Geofísicas
Instituto Argentino de Radioastronomía
description Be/X-ray binaries are systems formed by a massive Be star and a magnetized neutron star, usually in an eccentric orbit. The Be star has strong equatorial winds occasionally forming a circumstellar disk. When the neutron star intersects the disk the accretion rate dramatically increases and a transient accretion disk can be formed around the compact object. This disk can last longer than a single orbit in the case of major outbursts. If the disk rotates faster than the neutron star, the Cheng-Ruderman mechanism can produce a current of relativistic protons that would impact onto the disk surface, producing gamma-rays from neutral pion decays and initiating electromagnetic cascades inside the disk. In this paper we present calculations of the evolution of the disk parameters during both major and minor X-ray events, and we discuss the generation of gamma-ray emission at different energies within a variety of models that include both screened and unscreened disks.
publishDate 2005
dc.date.none.fl_str_mv 2005
dc.type.none.fl_str_mv info:eu-repo/semantics/bookPart
info:eu-repo/semantics/publishedVersion
Capitulo de libro
http://purl.org/coar/resource_type/c_3248
info:ar-repo/semantics/parteDeLibro
format bookPart
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/123502
url http://sedici.unlp.edu.ar/handle/10915/123502
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/isbn/978-1-4020-3214-1
info:eu-repo/semantics/altIdentifier/isbn/978-1-4020-3881-5
info:eu-repo/semantics/altIdentifier/doi/10.1007/1-4020-3881-x_17
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
167-178
dc.publisher.none.fl_str_mv Springer, Dordrecht
publisher.none.fl_str_mv Springer, Dordrecht
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
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score 13.216834

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