Precession of neutrino-cooled accretion disks in gamma-ray burst engines
Aims. We study the precession of accretion disks in the context of gamma-ray burst inner engines. Methods. With an accretion disk model that allows for neutrino cooling, we evaluate the possible periods of disk precession and nutation due to the Lense-Thirring effect. Results. Assuming jet eject...
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Formato: | Articulo |
Lenguaje: | Inglés |
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2006
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Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/83000 |
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I19-R120-10915-83000 |
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institution |
Universidad Nacional de La Plata |
institution_str |
I-19 |
repository_str |
R-120 |
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SEDICI (UNLP) |
language |
Inglés |
topic |
Ciencias Astronómicas Accretion, accretion disks Black hole physics Gamma-ray: bursts Neutrinos |
spellingShingle |
Ciencias Astronómicas Accretion, accretion disks Black hole physics Gamma-ray: bursts Neutrinos Reynoso, M. M. Romero, Gustavo Esteban Sampayo, Oscar Alfredo Precession of neutrino-cooled accretion disks in gamma-ray burst engines |
topic_facet |
Ciencias Astronómicas Accretion, accretion disks Black hole physics Gamma-ray: bursts Neutrinos |
description |
Aims. We study the precession of accretion disks in the context of gamma-ray burst inner engines.
Methods. With an accretion disk model that allows for neutrino cooling, we evaluate the possible periods of disk precession and nutation due to the Lense-Thirring effect.
Results. Assuming jet ejection perpendicular to the disk midplane and a typical intrinsic time dependence for the burst, we find possible gamma-ray light curves with a temporal microstructure similar to what is observed in some subsamples.
Conclusions. We conclude that the precession and nutation of a neutrino-cooled accretion disk in the burst engine might be responsible for some events, especially those with a slow rise and a fast decay. |
format |
Articulo Articulo |
author |
Reynoso, M. M. Romero, Gustavo Esteban Sampayo, Oscar Alfredo |
author_facet |
Reynoso, M. M. Romero, Gustavo Esteban Sampayo, Oscar Alfredo |
author_sort |
Reynoso, M. M. |
title |
Precession of neutrino-cooled accretion disks in gamma-ray burst engines |
title_short |
Precession of neutrino-cooled accretion disks in gamma-ray burst engines |
title_full |
Precession of neutrino-cooled accretion disks in gamma-ray burst engines |
title_fullStr |
Precession of neutrino-cooled accretion disks in gamma-ray burst engines |
title_full_unstemmed |
Precession of neutrino-cooled accretion disks in gamma-ray burst engines |
title_sort |
precession of neutrino-cooled accretion disks in gamma-ray burst engines |
publishDate |
2006 |
url |
http://sedici.unlp.edu.ar/handle/10915/83000 |
work_keys_str_mv |
AT reynosomm precessionofneutrinocooledaccretiondisksingammarayburstengines AT romerogustavoesteban precessionofneutrinocooledaccretiondisksingammarayburstengines AT sampayooscaralfredo precessionofneutrinocooledaccretiondisksingammarayburstengines |
bdutipo_str |
Repositorios |
_version_ |
1764820488159232002 |