http://arxiv.org/abs/2305.03947
Gamma-ray bursts (GRBs) can be classified with their linearly dependent parameters alongside the standard $T_{90}$ distribution. The Generalized linear mixture model(GLM) identifies the number of linear dependencies in a two-parameter space. Classically, GRBs are classified into two classes by the presence of bimodality in the histogram of T${90}$. However, additional classes and sub-classes of GRBs are fascinating topics to explore. In this work, we investigate the GRBs classes in the $ T{90} {-}T_{50}$ plane using the Generalized Linear Models(GLM) for \textit{Fermi} GBM and BATSE catalogs. This study shows five linear features for the \textit{Fermi} GBM catalog and four linear features for the BATSE catalog, directing towards the possibility of more than two GRB classes.
S. Dutta, S. Sunanda, R. Moharana, et. al.
Tue, 9 May 23
49/88
Comments: 8 figures, 1 table