Observational Manifestations of the Precessional Wave in the Accretion Disk of a Cataclysmic Variable Star
- Authors: Kaigorodov P.V.1, Bisikalo D.V.1
-
Affiliations:
- Institute of Astronomy
- Issue: Vol 62, No 11 (2018)
- Pages: 774-780
- Section: Article
- URL: https://journals.rcsi.science/1063-7729/article/view/191906
- DOI: https://doi.org/10.1134/S1063772918110021
- ID: 191906
Cite item
Abstract
Effects due to the interaction of the steam from the inner Lagrangian point with the accretion disk in a cataclysmic variable star are considered. The results of three-dimensional gas-dynamical numerical simulations confirm that the disk thickness in the vicinity of the interaction with the stream is minimum when the component-mass ratio is 0.6. As a consequence, some of the matter from the stream does not collide with the outer edge of the accretion disk, and continues its motion unperturbed toward the accretor. This part of the stream subsequent interacts (collides) with a thickening of the accretion disk due to the presence of a precessional wave in the disk, leading to the appearance of an additional zone of heating at the disk surface. This additional zone of enhanced luminosity (hot spot) is a direct observational manifestation of the precessional wave in the accretion disk.
About the authors
P. V. Kaigorodov
Institute of Astronomy
Author for correspondence.
Email: pasha@inasan.ru
Russian Federation, ul. Pyatnitskaya 48, Moscow, 119017
D. V. Bisikalo
Institute of Astronomy
Email: pasha@inasan.ru
Russian Federation, ul. Pyatnitskaya 48, Moscow, 119017
Supplementary files
