Accretion disk disruption from a superexpansion burst
In one of the public 2008 observations of bursters by RXTE we noticed
a new event from a relatively quiet source, 2S 0918-549. On closer
inspection, Jean in 't Zand noticed a remarkable interval of strong variability
late in this long (~300 s) event. This type of variability, which is
achromatic (i.e. energy-independent) and
seems to be restricted to bursts with extremely strong radius-expansion, may
arise from disruption and later resettling of the accretion disk. Our paper
has been accepted by A&A and is also out at arXiv:1009.5359.
Labels: 2010, /thermonuclear bursts
