XRF 050406 late-time flattening: an inverse Compton component?
Abstract
We investigate for possible evidence of inverse Compton (IC) emission in the X-ray afterglow of XRF 050406. In the framework of the standard fireball model, we show how the late-time flattening observed in the X-ray light curve between \~104 s and ~106 s can be explained in a synchrotron-plus-IC scenario, when the IC peak frequency crosses the X-ray band. We thus conclude that the appearance of an IC component above the synchrotron one at late times successfully accounts for these X-ray observations.
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