The outbursts of dwarf novae |
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Authors: | M R Truss J R Murray G A Wynn R G Edgar |
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Institution: | Department of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH |
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Abstract: | We present a numerical scheme for the evolution of an accretion disc through a dwarf nova outburst. We introduce a time-varying artificial viscosity into an existing smoothed particle hydrodynamics code optimized for two- and three-dimensional simulations of accretion discs. The technique gives rise to coherent outbursts and can easily be adapted to include a complete treatment of thermodynamics. We apply a two-dimensional isothermal scheme to the system SS Cygni, and present a wide range of observationally testable results. |
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Keywords: | accretion accretion discs hydrodynamics instabilities methods: numerical binaries: close novae cataclysmic variables |
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