Tidal torques on accretion discs in binary systems with extreme mass ratios

Details Tidal torques on accretion discs in binary systems with extreme mass ratios Tidal torques on accretion discs in binary systems with extreme mass ratios

Mar 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.186..799l&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 186, Mar. 1979, p. 799-812.

Astronomy and Astrophysics

Astronomy

199

Angular Momentum, Binary Stars, Momentum Transfer, Stellar Mass Accretion, Stellar Rotation, Transport Properties, Disks (Shapes), Dwarf Stars, Energy Dissipation, Light Curve, Mass Ratios, Novae, Reynolds Number, Tides, Torque

Scientific paper

This paper investigates the tidal transport of angular momentum in accretion-disk flow in a close binary system with small mass ratio, q. It is shown that the disk can be tidally truncated only if q is greater than the inverse of the Reynolds number. The existence of a strong 2:1 resonance is derived. Near the resonance, a spiral dissipation pattern is expected. If the Reynolds number is greater than about the inverse square of q, dissipation and angular-momentum loss from the disk may be sufficient to truncate it at the resonance. The application of these results to dwarf novae is discussed.

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