The RHESSI Satellite and Classes of Gamma-ray Bursts
J. Ripa, A. Meszaros, R. Hudec, C. Wigger, W. Hajdas
TL;DR
This study uses the RHESSI gamma-ray burst catalog to verify claims of a third GRB population, finding no significant evidence for such a group through statistical analysis of duration and hardness ratio.
Contribution
It provides an independent verification of GRB population classifications using RHESSI data, challenging previous claims of a third GRB class.
Findings
No significant third GRB group found in RHESSI data
Statistical analysis of duration and hardness ratio supports two GRB populations
Results contrast with some prior studies based on BATSE data
Abstract
Some articles based on the BATSE gamma-ray burst (GRB) catalog claim the existence of a third population of GRBs, besides long and short. In this contribution we wanted to verify these claims with an independent data source, namely the RHESSI GRB catalog. Our verification is based on the statistical analysis of duration and hardness ratio of GRBs. The result is that there is no significant third group of GRBs in our RHESSI GRB data-set.
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