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Quasi-periodic flares in EXO 2030+375 observed with INTEGRALстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Scopus,
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Klochkov D., Ferrigno C., Santangelo A., Staubert R., Kretschmar P., Caballero I., Postnov K., Wilson-Hodge C.A.
- Журнал: Astronomy and Astrophysics
- Том: 536
- Год издания: 2011
- Издательство: Springer Verlag
- Местоположение издательства: Germany
- Первая страница: 8
- Последняя страница: 12
- DOI: 10.1051/0004-6361/201118185
- Аннотация: Context. Episodic flaring activity is a common feature of X-ray pulsars in HMXBs. In some Be/X-ray binaries flares were observed in quiescence or prior to outbursts. EXO 2030+375 is a Be/X-ray binary showing "normal" outbursts almost every ~46 days, near periastron passage of the orbital revolution. Some of these outbursts were occasionally monitored with the INTEGRAL observatory. Aims: The INTEGRAL data revealed strong quasi-periodic flaring activity during the rising part of one of the system's outburst. Such activity has previously been observed in EXO 2030+375 only once, in 1985 with EXOSAT. (Some indications of single flares have also been observed with other satellites.) Methods: We present the analysis of the flaring behavior of the source based on INTEGRAL data and compare it with the flares observed in EXO 2030+375 in 1985. Results: Based on the observational properties of the flares, we argue that the instability at the inner edge of the accretion disk is the most probable cause of the flaring activity.
- Добавил в систему: Постнов Константин Александрович