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The intermediate polar GK Persei: An unstable relation of the X-ray and the optical intensities in a series of outbursts
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SYSNO ASEP 0444767 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název The intermediate polar GK Persei: An unstable relation of the X-ray and the optical intensities in a series of outbursts Tvůrce(i) Šimon, Vojtěch (ASU-R) ORCID, RID Zdroj.dok. Astronomy & Astrophysics. - : EDP Sciences - ISSN 0004-6361
Roč. 575, March (2015), A65/1-A65/8Poč.str. 8 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. FR - Francie Klíč. slova accretion disks ; radiation mechanisms ; cataclysmic variables Vědní obor RIV BN - Astronomie a nebeská mechanika, astrofyzika Obor OECD Astronomy (including astrophysics,space science) Institucionální podpora ASU-R - RVO:67985815 UT WOS 000350249100065 DOI 10.1051/0004-6361/201424910 Anotace 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. Pracoviště Astronomický ústav Kontakt Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326 Rok sběru 2016
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