Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-05-23
Astronomy and Astrophysics
Astrophysics
LaTeX, 11 pages, to be published in Astron. Zh
Scientific paper
The results of three-dimensional numerical simulations of mass transfer in binaries with spiral shocks are presented. It is shown that the mass transfer rate variation disturbs the equilibrium state of accretion disk and results in formation of the blob. This dense formation moves on the disk with variable velocity. The results of our simulations show that the blob lives long enough and retains its main characteristics for the time of order of tens orbital periods. Analysis of the results shows that the action of dissipation is negligible on these timescales and the blob smearing out due to differential rotation of the disk is stopped by its interaction with spiral shocks. Light curves of some CVs show periodic or quasi-periodic photometric modulations with typical period 0.1-0.2P_orb. We suggest to consider the formation of the blob in binaries with spiral shocks as a possible reason for these modulations. The efficiency of this mechanism is confirmed by good qualitative (and, in part, quantitative) agreement between the results of our simulations and observations of binaries IP Peg and EX Dra.
Bisikalo Dimitry V.
Boyarchuk Alexander A.
Kilpio Alexander
Kuznetsov Oleg A.
No associations
LandOfFree
On possible observational evidences of spiral shocks in accretion disks of CVs does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with On possible observational evidences of spiral shocks in accretion disks of CVs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On possible observational evidences of spiral shocks in accretion disks of CVs will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-492829