L. Izzo, G. B. Pisani, M. Muccino, J. A. Rueda, Y. Wang, C. L. Bianco, A. V. Penacchioni, R. Ruffini
The possibility to divide GRBs in different subclasses allow to understand better the physics underlying their emission mechanisms and progenitors. The induced gravitational collapse (IGC) scenario proposes a binary progenitor to explain the time-sequence of the GRB-SN events. We show the existence of a common behavior of the late decay of the X-ray afterglow emission of this subclass of GRBs, pointing to a common physical mechanism of this late GRB emission, consistent with the IGC picture.
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http://arxiv.org/abs/1210.8034
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