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SXTs AND TOADs: CLOSE ENCOUNTERS OF THE SAME KIND

机译：SXT和TOAD：相同种类的近距离接触

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摘要

We show that, apart from having in common long intervals between large-amplitude outbursts (without intervening normal outbursts), soft X-ray transients (SXTs) and "tremendous outburst amplitude dwarf novae" (TOADs) have very similar optical light curves, showing glitches and superhumps during the main part of the outbursts, and considerable postoutburst activity in the form of one or more minioutbursts. We propose that these similarities reflect that both SXTs and TOADs have very small mass ratios and very low mass transfer rates. The outbursts of SXTs and TOADs are triggered by a viscous instability and are almost always followed by a tidal instability during which superhumps develop. We suggest that the increased mass accretion during the glitches is caused by enhanced tidal dissipation.
机译：我们显示，除了在大振幅爆发之间没有共同的长间隔（没有中间正常爆发）之外，软X射线瞬变（SXT）和“巨大爆发振幅矮新星”（TOAD）具有非常相似的光学曲线，表明在爆发的主要阶段出现小故障和超驼峰，并且以一种或多种小爆发的形式发生大量的爆发后活动。我们认为这些相似之处反映了SXT和TOAD的质量比非常小，传质速率非常低。 SXT和TOAD的爆发是由粘性不稳定引起的，并且几乎总是伴随着潮汐的不稳定性，在此期间会形成超驼峰。我们建议故障期间增加的质量积聚是由于潮汐耗散增强所致。

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