A time-dependent model for synchronization in close binaries

Details A time-dependent model for synchronization in close binaries A time-dependent model for synchronization in close binaries

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...359..155t&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 359, Aug. 10, 1990, p. 155-163. Research supported by the Ministere de l'Ed

Physics

Fluid Dynamics

24

Binary Stars, Fluid Dynamics, Stellar Models, Stellar Rotation, Inviscid Flow, Synchronism

Scientific paper

The three-dimensional motions in a tidally distorted binary component when the initial degree of nonsynchronism is small is studied. A boundary layer analysis is used to investigate the mechanism by which this large-scale transient flow tends to sychronize the axial motion of the gaseous body with its orbital motion. The formation of an Ekman-type suction layer is found to induce a large-scale flow of matter within the practically inviscid interior of the star. Detailed calculations show that this time-dependent advection of matter and angular momentum brings effective synchronization within a time that is much shorter than those associated with other mechanisms.

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