Timing variability of Vela X-1 during a bright flare
Por favor, use este identificador para citar o enlazar este ítem:
http://hdl.handle.net/10045/109367
Título: | Timing variability of Vela X-1 during a bright flare |
---|---|
Autor/es: | Martin-Carrillo, Antonio | Kretschmar, Peter | Martínez Núñez, Silvia | Torrejon, Jose M. | Kreykenbohm, Ingo | Wilms, Jorn | Fürst, Felix | Stuhlinger, Martin | Rodes Roca, José Joaquín | Hanlon, Lorraine |
Grupo/s de investigación o GITE: | Astronomía y Astrofísica |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal | Universidad de Alicante. Instituto Universitario de Física Aplicada a las Ciencias y las Tecnologías |
Palabras clave: | X-ray binaries | Vela X-1 | High-Mass | Timing |
Área/s de conocimiento: | Física Aplicada | Astronomía y Astrofísica |
Fecha de publicación: | jul-2014 |
Serie/Informe nº: | 2014xru..confE.130M |
Resumen: | We present an in-depth analysis of the temporal behaviour of the HMXB Vela X-1 which exhibited strongly varying flux levels during an observation by XMM-Newton. During the 100 ks observation the source went from being in a highly absorbed initial state, to one of increased activity which was followed by a giant X-ray flare, before finally reaching a settled state with low absorption. The lower absorption state allows the normally absorbed pulse profile below 1 keV to be studied. Vela X-1 also showed multiple changes in the structure of the pulse profile including a phase lag with the harder photons leading the softer ones. A change in the pulse period, significant at approximately the 2σ level, was observed at the beginning of the powerful flare and is likely related to the large accreted mass. For comparison purposes, an earlier XMM-Newton observation in a lower active state is used to put the variations in pulse profile and phase lag in context. |
Descripción: | The X-ray Universe 2014, edited by Jan-Uwe Ness. Online at http://www.cosmos.esa.int/web/xmm-newton/2014-symposium/, id.130 |
URI: | http://hdl.handle.net/10045/109367 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/conferenceObject |
Derechos: | Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License |
Revisión científica: | no |
Versión del editor: | http://www.cosmos.esa.int/web/xmm-newton/2014-symposium/ | https://ui.adsabs.harvard.edu/abs/2014xru..confE.130M/abstract |
Aparece en las colecciones: | INV - Astronomía y Astrofísica - Comunicaciones a Congresos, Conferencias, etc. |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
---|---|---|---|---|
AMartinCarrillo_t.pdf | Talk contribution XRU2014 | 2,28 MB | Adobe PDF | Abrir Vista previa |
Este ítem está licenciado bajo Licencia Creative Commons