The Fermi GBM Gamma-Ray Burst Spectral Catalog: 10 Years of Data

TL;DR

This paper provides a comprehensive spectral catalog of 2297 gamma-ray bursts detected by Fermi GBM over ten years, including detailed analysis methods and parameter distributions, serving as a valuable resource for GRB research.

Contribution

It presents the first large-scale, systematic spectral analysis of ten years of Fermi GBM GRB data, including over 18000 spectra and detailed methodology.

Findings

Distribution of spectral parameters in observer and rest frames.

Re-analysis of earlier GRBs with consistent methodology.

Public availability of complete spectral data files.

Abstract

We present the systematic spectral analyses of gamma-ray bursts (GRBs) detected by the Fermi Gamma-Ray Burst Monitor (GBM) during its first ten years of operation. This catalog contains two types of spectra; time-integrated spectral fits and spectral fits at the brightest time bin, from 2297 GRBs, resulting in a compendium of over 18000 spectra. The four different spectral models used for fitting the spectra were selected based on their empirical importance to the shape of many GRBs. We describe in detail our procedure and criteria for the analyses, and present the bulk results in the form of parameter distributions both in the observer frame and in the GRB rest frame. 941 GRBs from the first four years have been re-fitted using the same methodology as that of the 1356 GRBs in years five through ten. The data files containing the complete results are available from the High-Energy Astrophysics Science Archive Research Center (HEASARC).