On the narrowness of transition fronts in accretion discs

Details On the narrowness of transition fronts in accretion discs On the narrowness of transition fronts in accretion discs

Nov 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985mnras.217..387p&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 217, Nov. 15, 1985, p. 387-390.

Statistics

Computation

15

Accretion Disks, Computational Astrophysics, Stellar Mass Ejection, Stellar Models, Transition Points, Viscous Flow, Dwarf Novae

Scientific paper

The authors consider the transition region in a bi-stable accretion disc between the high- and low-viscosity regions. They demonstrate that it is incorrect to calculate the evolution of such discs by regarding the transition region as being a region of negligible thickness across which appropriate jump conditions may be applied. Such treatments must always result in failure to conserve mass or angular momentum. This failure is most serious when there is a slow-moving interface between high- and low-viscosity regions, a situation that occurs when the transition front does not propagate through the whole disc. Thus the transition front cannot in general be considered to be narrow compared to the disc radius.

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