Accretion Disks of Bounce-Back CVs

Gagik Tovmassian, Sergey Zharikov
2012 Proceedings of the International Astronomical Union  
AbstractWe explore conditions and structure of accretion disks in the short-period Cataclysmic Variables, which have evolved beyond the period minimum. We show that the accretion disk in a system with extreme mass ratio grows in the size reaching 2:1 resonance radius and are relatively cool. They also become largely optically thin in the continuum, contributing to the total flux less than the stellar components of the system. In contrast, the viscosity and the temperature in spiral arms formed
more » ... spiral arms formed at the outer edge of the disk are higher and their contribution in continuum plays an increasingly important role. We model such disks and generate light curves which successfully simulate the observed double-humped light curves in the quiescence.
doi:10.1017/s1743921312019412 fatcat:ic5yw3yvgncujbgehgllnw3mye