Thermal emission and line profiles from magnetized accretion disks

Autores
Ranea Sandoval, Ignacio Francisco; García, Federico
Año de publicación
2014
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Observations of X-ray binary systems provide strong evidences of the existence of compact objects too massive to be explained by current neutron star models. When these systems are in the thermal (high/soft) state their emission spectra in the 0.1 − 5 keV range can be modeled by means of the thermal radiation of an accretion disk formed around super-compact objects. The profile of the fluorescent iron line is useful to get insight related with the nature of the compact object. In this work we developed a numerical scheme able to calculate thermal spectra of magnetized Page-Thorne accretion disks formed around both rotating black holes and naked singularities as seen by an arbitrary distant observer. We incorporated two different magnetic field configurations: uniform and dipolar, using a perturbative scheme in the coupling constant between matter and magnetic field. Under the same assumptions we obtained observed synthetic line profiles of the 6.4 keV iron line. We showthat the presence of an externalmagnetic field produces potentially observable modifications on both the thermal energy spectrum and fluorescent iron line profile.
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Ciencias Astronómicas
Page-Thorne accretion disks
thermal spectra
external magnetic field
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:10915/165285
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/165285
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Thermal emission and line profiles from magnetized accretion disksRanea Sandoval, Ignacio FranciscoGarcía, FedericoCiencias AstronómicasPage-Thorne accretion disksthermal spectraexternal magnetic fieldObservations of X-ray binary systems provide strong evidences of the existence of compact objects too massive to be explained by current neutron star models. When these systems are in the thermal (high/soft) state their emission spectra in the 0.1 − 5 keV range can be modeled by means of the thermal radiation of an accretion disk formed around super-compact objects. The profile of the fluorescent iron line is useful to get insight related with the nature of the compact object. In this work we developed a numerical scheme able to calculate thermal spectra of magnetized Page-Thorne accretion disks formed around both rotating black holes and naked singularities as seen by an arbitrary distant observer. We incorporated two different magnetic field configurations: uniform and dipolar, using a perturbative scheme in the coupling constant between matter and magnetic field. Under the same assumptions we obtained observed synthetic line profiles of the 6.4 keV iron line. We showthat the presence of an externalmagnetic field produces potentially observable modifications on both the thermal energy spectrum and fluorescent iron line profile.Facultad de Ciencias Astronómicas y Geofísicas2014-04info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionObjeto de conferenciahttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdf223-226http://sedici.unlp.edu.ar/handle/10915/165285enginfo:eu-repo/semantics/altIdentifier/isbn/978-987-24948-2-7info: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:UNLP2025-10-22T17:24:45Zoai:sedici.unlp.edu.ar:10915/165285Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 17:24:46.084SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Thermal emission and line profiles from magnetized accretion disks
title Thermal emission and line profiles from magnetized accretion disks
spellingShingle Thermal emission and line profiles from magnetized accretion disks
Ranea Sandoval, Ignacio Francisco
Ciencias Astronómicas
Page-Thorne accretion disks
thermal spectra
external magnetic field
title_short Thermal emission and line profiles from magnetized accretion disks
title_full Thermal emission and line profiles from magnetized accretion disks
title_fullStr Thermal emission and line profiles from magnetized accretion disks
title_full_unstemmed Thermal emission and line profiles from magnetized accretion disks
title_sort Thermal emission and line profiles from magnetized accretion disks
dc.creator.none.fl_str_mv Ranea Sandoval, Ignacio Francisco
García, Federico
author Ranea Sandoval, Ignacio Francisco
author_facet Ranea Sandoval, Ignacio Francisco
García, Federico
author_role author
author2 García, Federico
author2_role author
dc.subject.none.fl_str_mv Ciencias Astronómicas
Page-Thorne accretion disks
thermal spectra
external magnetic field
topic Ciencias Astronómicas
Page-Thorne accretion disks
thermal spectra
external magnetic field
dc.description.none.fl_txt_mv Observations of X-ray binary systems provide strong evidences of the existence of compact objects too massive to be explained by current neutron star models. When these systems are in the thermal (high/soft) state their emission spectra in the 0.1 − 5 keV range can be modeled by means of the thermal radiation of an accretion disk formed around super-compact objects. The profile of the fluorescent iron line is useful to get insight related with the nature of the compact object. In this work we developed a numerical scheme able to calculate thermal spectra of magnetized Page-Thorne accretion disks formed around both rotating black holes and naked singularities as seen by an arbitrary distant observer. We incorporated two different magnetic field configurations: uniform and dipolar, using a perturbative scheme in the coupling constant between matter and magnetic field. Under the same assumptions we obtained observed synthetic line profiles of the 6.4 keV iron line. We showthat the presence of an externalmagnetic field produces potentially observable modifications on both the thermal energy spectrum and fluorescent iron line profile.
Facultad de Ciencias Astronómicas y Geofísicas
description Observations of X-ray binary systems provide strong evidences of the existence of compact objects too massive to be explained by current neutron star models. When these systems are in the thermal (high/soft) state their emission spectra in the 0.1 − 5 keV range can be modeled by means of the thermal radiation of an accretion disk formed around super-compact objects. The profile of the fluorescent iron line is useful to get insight related with the nature of the compact object. In this work we developed a numerical scheme able to calculate thermal spectra of magnetized Page-Thorne accretion disks formed around both rotating black holes and naked singularities as seen by an arbitrary distant observer. We incorporated two different magnetic field configurations: uniform and dipolar, using a perturbative scheme in the coupling constant between matter and magnetic field. Under the same assumptions we obtained observed synthetic line profiles of the 6.4 keV iron line. We showthat the presence of an externalmagnetic field produces potentially observable modifications on both the thermal energy spectrum and fluorescent iron line profile.
publishDate 2014
dc.date.none.fl_str_mv 2014-04
dc.type.none.fl_str_mv info:eu-repo/semantics/conferenceObject
info:eu-repo/semantics/publishedVersion
Objeto de conferencia
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
format conferenceObject
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/165285
url http://sedici.unlp.edu.ar/handle/10915/165285
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/isbn/978-987-24948-2-7
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
223-226
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 12.982451

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