A common behavior in the late X-ray afterglow of energetic GRB-SN sys- tems

IZZO, L.; PISANI, G. B.; MUCCINO, M.; RUEDA, J. A.; WANG, Y.; BIANCO, C. L.; PENACCHIONI, A. V.; RUFFINI, R.

Malaga

Congreso; Gamma-ray Bursts: 15 Years of GRB Afterglows; 2013

The possibility to divide GRBs in different subclasses allow to understand better the physics underlying their emission mechanisms and progenitors. The induced gravitational collapse scenario proposes a binary progenitor to explain the time-sequence in GRBs-SNe. 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 their late emission, consistent with the IGC picture.