On the origin of tilted disks and negative superhumps

Details On the origin of tilted disks and negative superhumps On the origin of tilted disks and negative superhumps

2009-10-14

arxiv.org/abs/0910.2541v1

Acta Astron., 59, 419, 2009

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

Submitted to Acta Astronomica, 12 pages, 3 figures

Scientific paper

The origin of tilted disks in cataclysmic variables is explained in terms of a model involving the stream-disk interactions. Tilted, precessing disk causes periodically variable asymmetry in the irradiation of the two hemispheres of the secondary component, resulting in variable vertical component of the velocity of the stream. The following stream-disk interactions provide additional vertical acceleration to disk elements needed to produce and maintain disk tilt. Predictions based on this model compare favorably with observations.

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