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Título: | X-ray observations of classical novae. Theoretical implications |
Autor: | Hernanz, Margarita CSIC ORCID ; Sala, Gloria CSIC ORCID | Palabras clave: | Stars: novae Cataclysmic variables Stars: white dwarfs X-ray binaries |
Fecha de publicación: | 8-feb-2010 | Resumen: | Detection of X-rays from classical novae, both in outburst and post-outburst, provides unique and crucial information about the explosion mechanism. Soft X-rays reveal the hot white dwarf photosphere, whenever hydrogen (H) nuclear burning is still on and expanding envelope is transparent enough, whereas harder X-rays give information about the ejecta and/or the accretion flow in the reborn cataclysmic variable. The duration of the supersoft X-ray emission phase is related to the turn-off of the classical nova, i.e., of the H-burning on top of the white dwarf core. A review of X-ray observations is presented, with a special emphasis on the implications for the duration of post-outburst steady H-burning and its theoretical explanation. The particular case of recurrent novae (both the ”standard” objects and the recently discovered ones) will also be reviewed, in terms of theoretical feasibility of short recurrence periods, as well as regarding implications for scenarios of type Ia supernovae. | Descripción: | 6 pages, 1 figure, 1 table.-- Pre-print archive.-- Refereed workshop proceedings will be published as a regular issue of "Astronomische Nachrichten (Astronomical Notes)". | Versión del editor: | http://arxiv.org/abs/0910.4607 | URI: | http://hdl.handle.net/10261/20833 | ISSN: | 0004-6337 |
Aparece en las colecciones: | (ICE) Artículos |
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0910.4607v1.pdf | 125,79 kB | Adobe PDF | Visualizar/Abrir |
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