Pre-conditions for disc-generated FU Orionis outbursts
C. J. ClarkeLick Observatory, Board of Studies in Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USAD. N. C. LinLick Observatory, Board of Studies in Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USAJ. E. PringleInstitute of Astronomy, Madingley Road, Cambridge CB3 0HA
1990en
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We examine the condition in which a protostellar disc must be set up in order to generate FU Orionis outbursts. We find that FU Orionis behaviour can be produced by perturbation of a low accretion rate disc around a normal T Tauri star. Suitable perturbations involve a substantial surface density enhancement and heating to |$\thicksim {10}^{4}\,\text{K}$| of the inner disc.
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