A Spiral Density Wave in Inner Annuli of Accretion Disks

Details A Spiral Density Wave in Inner Annuli of Accretion Disks A Spiral Density Wave in Inner Annuli of Accretion Disks

May 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21630102m&link_type=abstract

American Astronomical Society, AAS Meeting #216, #301.02; Bulletin of the American Astronomical Society, Vol. 41, p.845

Astronomy and Astrophysics

Astronomy

Scientific paper

Through numerical simulations using a hydrodynamic grid code, we show that a spiral density wave can be generated in inner annuli of a non-magnetic Cataclysmic Variable secondary-to-primary mass ratio q=M2/M1=0.4 system where M1=0.8 solar masses. The wave is entirely within the plane of the disk and it retrogradely precesses. We introduce the source to retrograde precession. We also show that if the accretion disk is tilted, then pressure effects in addition to dynamic effects can explain observed values of retrograde precession.

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