Gamma-Ray Emission from Be/X-Ray Binaries
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 transie...
| Autores principales: | , , |
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| Formato: | Libro Capitulo de libro |
| Lenguaje: | Inglés |
| Publicado: |
Springer, Dordrecht
2005
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/123502 |
| Aporte de: |
| id |
I19-R120-10915-123502 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Astronomía X-ray binaries neutron stars gamma-rays |
| spellingShingle |
Astronomía X-ray binaries neutron stars gamma-rays Orellana, Mariana Dominga Romero, Gustavo Esteban Cheng, K. S. Romero, Gustavo Esteban Gamma-Ray Emission from Be/X-Ray Binaries |
| topic_facet |
Astronomía X-ray binaries neutron stars gamma-rays |
| 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. |
| format |
Libro Capitulo de libro |
| author |
Orellana, Mariana Dominga Romero, Gustavo Esteban Cheng, K. S. Romero, Gustavo Esteban |
| author_facet |
Orellana, Mariana Dominga Romero, Gustavo Esteban Cheng, K. S. Romero, Gustavo Esteban |
| author_sort |
Orellana, Mariana Dominga |
| title |
Gamma-Ray Emission from Be/X-Ray Binaries |
| 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 |
| publisher |
Springer, Dordrecht |
| publishDate |
2005 |
| url |
http://sedici.unlp.edu.ar/handle/10915/123502 |
| work_keys_str_mv |
AT orellanamarianadominga gammarayemissionfrombexraybinaries AT romerogustavoesteban gammarayemissionfrombexraybinaries AT chengks gammarayemissionfrombexraybinaries AT romerogustavoesteban gammarayemissionfrombexraybinaries |
| bdutipo_str |
Repositorios |
| _version_ |
1764820449656569858 |