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On echo outbursts and ER UMa supercycles in SUUMa-type cataclysmic variables

Abstract:
I present a variation on Osaki's tidal-thermal-instability model for SU UMa behaviour. I suggest that in systems with the lowest mass ratios, the angular-momentum dissipation in an eccentric disc is unable to sustain the disc on the hot side of the thermal instability. This decoupling of the tidal and thermal instabilities in low-q systems allows a better explanation of the 'echo' outbursts of WZ Sge systems and the short supercycles of ER UMa stars. The idea might also apply to the soft X-ray transients.
Publication status:
Published

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Authors


Hellier, C More by this author
Volume:
229
Pages:
385-389
Publication date:
2001
URN:
uuid:19e3f169-39ec-4c3c-ad1a-b0aa326d6c1c
Source identifiers:
8827
Local pid:
pubs:8827
ISBN:
1-58381-061-7

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