Laurens gave a very nice talk discussing the problem of X-ray bursts with short recurrence times. He uses a combined RXTE-PCA and BeppoSAX-WFC archive, containing over 3000 bursts, for his studies. For a large range of mass-accretion rates, bursts are found that are followed up by more bursts minutes later (double and triple bursts). Such time-scales are too short to create a brand new fuel layer through accretion, which suggests that there must be some left-over fuel after the initial burst. It remains a mystery how and where this fuel could be stored.
Tuesday, May 19, 2009
Laurens Keek: X-ray bursts with too short recurrence times
Laurens gave a very nice talk discussing the problem of X-ray bursts with short recurrence times. He uses a combined RXTE-PCA and BeppoSAX-WFC archive, containing over 3000 bursts, for his studies. For a large range of mass-accretion rates, bursts are found that are followed up by more bursts minutes later (double and triple bursts). Such time-scales are too short to create a brand new fuel layer through accretion, which suggests that there must be some left-over fuel after the initial burst. It remains a mystery how and where this fuel could be stored.
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