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

TL;DR

This paper identifies a common decay pattern in the late X-ray afterglow of energetic GRB-SN systems, supporting the induced gravitational collapse model and suggesting a shared physical mechanism.

Contribution

It demonstrates a universal behavior in the late X-ray afterglow of GRB-SN systems, providing evidence for a common physical process consistent with the IGC scenario.

Findings

A universal late X-ray afterglow decay pattern in GRB-SN systems

Support for the induced gravitational collapse model as the underlying mechanism

Implication of a shared physical process in these energetic systems

Abstract

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.