On a novel distance indicator for Gamma-Ray Bursts associated with Supernovae

TL;DR

This paper identifies a standard luminosity pattern in late-time X-ray emissions of GRBs associated with supernovae, suggesting a common physical mechanism and proposing a new distance indicator for these events.

Contribution

It introduces a novel luminosity scaling law in late-time X-ray emissions of GRBs linked to supernovae, aiding redshift estimation and understanding of their physical origin.

Findings

Discovery of a standard luminosity behavior in late-time X-ray emissions.

Proposal of a scaling law as a distance indicator for GRBs.

Implication of a common physical mechanism related to neutron star formation.

Abstract

It has been proposed that the temporal coincidence of a gamma-ray burst (GRB) and a type Ib/c supernova (SN) can be explained with the concept of induced gravitational collapse (IGC), induced by the matter ejected from an SN Ib/c accreting onto a neutron star (NS). We found a standard luminosity light curve behavior in the late-time X-ray emission of this subclass of GRBs. We interpret this as the result of a common physical mechanism in this particular phase of the X-ray emission, possibly related to the creation of the NS from the SN process. Moreover, this scaling law could be a fundamental tool for estimating the redshift of GRBs that belong to this subclass of events.