Number of the records: 1
The intermediate polar GK Persei: An unstable relation of the X-ray and the optical intensities in a series of outbursts
- 1.
SYSNO ASEP 0444767 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The intermediate polar GK Persei: An unstable relation of the X-ray and the optical intensities in a series of outbursts Author(s) Šimon, Vojtěch (ASU-R) ORCID, RID Source Title Astronomy & Astrophysics. - : EDP Sciences - ISSN 0004-6361
Roč. 575, March (2015), A65/1-A65/8Number of pages 8 s. Publication form Online - E Language eng - English Country FR - France Keywords accretion disks ; radiation mechanisms ; cataclysmic variables Subject RIV BN - Astronomy, Celestial Mechanics, Astrophysics OECD category Astronomy (including astrophysics,space science) Institutional support ASU-R - RVO:67985815 UT WOS 000350249100065 DOI 10.1051/0004-6361/201424910 Annotation This analysis shows that the X-ray intensity steeply rises only in the start of the optical outburst and steeply declines only when the optical outburst comes to its end. However, the 1.5-50 keV band intensity saturates and balances on a plateau during the outburst. This study shows that a series of outbursts constitutes more general properties of this discrepancy. I argue that the saturation of the X-ray luminosity in outburst cannot be caused by a dominant increase in X-ray absorption. In the interpretation, large structural changes of the accreting regions at the magnetic poles of the white dwarf occur during the outburst. A buried shock proposed by some authors for polars is also promising for explaining the X-ray light curves of outbursts of GK Per. Workplace Astronomical Institute Contact Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326 Year of Publishing 2016
Number of the records: 1