Evidences for a double component in GRB 101023

TL;DR

This paper analyzes GRB 101023 within the fireshell model, inferring a redshift of 0.9, and identifies a double emission structure, with the second emission matching a typical gamma-ray burst profile.

Contribution

It provides a detailed spectral and temporal analysis of GRB 101023, revealing a double emission component and applying the fireshell scenario to interpret its features.

Findings

First emission does not match typical GRB characteristics.

Second emission aligns with canonical GRB profile.

Inferred redshift of z=0.9 from Amati relation.

Abstract

We present the results of the analysis of GRB 101023 in the fireshell scenario. Its redshift has not been determined due to the lack of data in the optical band, so we tried to infer it from the Amati Relation, obtaining z=0.9. Its light curve presents a double emission, which makes it very similar to the already studied GRB 091018. We performed a time-resolved spectral analysis with XSPEC using different spectral models, and fitted the light curve with the numerical code GRBsim. We used Fermi GBM data to build the light curve, in particular the second INa detector, in the range (8-440 keV). We found that the first emission does not match the requirements for a GRB, while the second part perfectly agrees with being a canonical GRB, with a P-GRB lasting 4s.