Thursday, July 11, 2013

1307.2650 (Y. C. Zou et al.)

Long-term X-ray emission from Swift J1644+57    [PDF]

Y. C. Zou, F. Y. Wang, K. S. Cheng
The X-ray emission from Swift J1644+57 is not steadily decreasing instead it shows multiple pulses with declining amplitudes. We model the pulses as reverse shocks from collisions between the late ejected shells and the externally shocked material, which is decelerated while sweeping the ambient medium. The peak of each pulse is taken as the maximum emission of each reverse shock. With a proper set of parameters, the envelope of peaks in the light curve as well as the spectrum can be modelled nicely.
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