Over-reflection instability and the developed turbulence in accretion disks in close binaries

Autor:	A. A. Boyarchuk, Yu. M. Torgashin, Aleksei M Fridman, L. A. Pustil’nik, Dmitry Bisikalo
Rok vydání:	2009
Předmět:	Physics High rate Turbulence Astronomy and Astrophysics Astrophysics Instability Accretion rate Accretion disc Space and Planetary Science Magnetorotational instability Binary star Reflection (physics) Astrophysics::Earth and Planetary Astrophysics Astrophysics::Galaxy Astrophysics
Zdroj:	Astronomy Reports. 53:750-768
ISSN:	1562-6881 1063-7729
DOI:	10.1134/s1063772909080058
Popis:	The results of studies of the over-reflection mechanism for the development of hydrodynamical instability in the accretion disks of close binary stars are presented. The driving of this instability is shown to result in the generation of regular, large-scale, spiral-vortex structures and the development of turbulence in the disk. The derived estimates of the coefficient of turbulent viscosity are in good agreement with the observations, and are able to explain the high rate of angular-momentum transfer and the measured accretion rate. The developed theoretical model is used with the observational data to derive a power-law spectrum for the developed turbulence.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5c0eb51d0acabf865eb82786f0a7d48a https://doi.org/10.1134/s1063772909080058 Zobrazit plný text záznamu Plný text ve formátu PDF