Thermal emission and line profiles from magnetized accretion disks

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...

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Detalles Bibliográficos
Autores principales:	Ranea Sandoval, Ignacio Francisco, García, Federico
Formato:	Objeto de conferencia
Lenguaje:	Inglés
Publicado:	2014
Materias:	Ciencias Astronómicas Page-Thorne accretion disks thermal spectra external magnetic field
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/165285
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-165285
record_format	dspace
spelling	I19-R120-10915-1652852024-04-24T20:07:34Z http://sedici.unlp.edu.ar/handle/10915/165285 Thermal emission and line profiles from magnetized accretion disks Ranea Sandoval, Ignacio Francisco García, Federico 2014-04 2015 2024-04-24T18:22:39Z en Ciencias Astronómicas Page-Thorne accretion disks thermal spectra external magnetic field 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 Objeto de conferencia Objeto de conferencia http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf 223-226
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Astronómicas Page-Thorne accretion disks thermal spectra external magnetic field
spellingShingle	Ciencias Astronómicas Page-Thorne accretion disks thermal spectra external magnetic field Ranea Sandoval, Ignacio Francisco García, Federico Thermal emission and line profiles from magnetized accretion disks
topic_facet	Ciencias Astronómicas Page-Thorne accretion disks thermal spectra external magnetic field
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.
format	Objeto de conferencia Objeto de conferencia
author	Ranea Sandoval, Ignacio Francisco García, Federico
author_facet	Ranea Sandoval, Ignacio Francisco García, Federico
author_sort	Ranea Sandoval, Ignacio Francisco
title	Thermal emission and line profiles from magnetized accretion disks
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
publishDate	2014
url	http://sedici.unlp.edu.ar/handle/10915/165285
work_keys_str_mv	AT raneasandovalignaciofrancisco thermalemissionandlineprofilesfrommagnetizedaccretiondisks AT garciafederico thermalemissionandlineprofilesfrommagnetizedaccretiondisks
_version_	1807223008205471744

Thermal emission and line profiles from magnetized accretion disks

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