Electrodynamical synchronization of AM Herculis-type stars

descriptionPublicationkeyboard_double_arrow_right Article , Part of book or chapter of book 01 Jan 1986 English Publisher:Springer Science and Business Media LLCJournal:Astrophysics and Space Science, volume 119, pages 85-88 (issn: 0004-640X, eissn: 1572-946X,

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Authors: Osamu Kaburaki;

doi: 10.1007/bf00648819 , 10.1007/978-94-009-4630-9_19

Electrodynamical synchronization of AM Herculis-type stars

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Abstract

A new mechanism is proposed for the explanation of synchronous rotations in AM Herculis-type binaries. In contrast to the resistive mechanism of Josset al. (1979), our model predicts that an asynchronous rotation, if it is present, damps exponentially and the damping time is inversely proportional to the electrical conductivity. It is shown by using the parameters which fit for AM Herculis that a typical damping time is very short compared with the lifetime of the system.

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Tohoku University
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