Eccentric-Mode Excitation of Accretion Discs

Details Eccentric-Mode Excitation of Accretion Discs Eccentric-Mode Excitation of Accretion Discs

Jan 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994mnras.266...35w&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 266, NO. 1/JAN, P. 35, 1994

Astronomy and Astrophysics

Astronomy

60

Accretion, Accretion Discs - Instabilities - Binaries: Close - Novae, Cataclysmic Variables

Scientific paper

The development of eccentric-mode resonances in accretion discs within binary systems is simulated. The measured rotational rates of the resulting eccentric discs are found to agree with the observed superhump periods of SU UMa stars. This lends support to the eccentric-disc model of superhump formation. In addition, the decline of the superhump period is found to be explained by the inwards propagation of the eccentric mode. Measurements of superhump periods therefore constrain both the mass ratio of a system and the structure of its accretion disc.

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