On the Asynchronous Rotation of Accretors in Interacting Binaries

Details On the Asynchronous Rotation of Accretors in Interacting Binaries On the Asynchronous Rotation of Accretors in Interacting Binaries

Apr 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005ap%26ss.296..427s&link_type=abstract

Astrophysics and Space Science, Volume 296, Issue 1-4, pp. 427-430

Astronomy and Astrophysics

Astrophysics

1

Stars, Binaries, Asynchronous Rotation

Scientific paper

We show that the gaining component in interacting binaries can rotate faster than its orbital revolution as a consequence of the accretion process. We derive an approximative analytical formula for the Roche lobe radius of asynchronously rotating accretors. We present the case of the semi-detached interacting binary TX UMa, for which we measured directly asynchronous rotation of its accretor. We suggest a method to detect indirectly a fast spinning of accretors in symbiotic binaries based on the the X-ray luminosity of the boundary layer. We demonstrate this possibility for the case of EG And.

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