Classification of Fermi Gamma-RAY Bursts

I. Horváth, L. Balázs, Jon Hakkila, Z. Bagoly, Robert D. Preece

Research output: Contribution to journalConference article

Abstract

The Fermi GBM Catalog has been recently published. Previous classification analyses of the BATSE, RHESSI, BeppoSAX, and Swift databases found three types of gamma-ray bursts. Now we analyzed the GBM catalog to classify the GRBs. PCA and Multiclustering analysis revealed three groups. Validation of these groups, in terms of the observed variables, shows that one of the groups coincides with the short GRBs. The other two groups split the long class into a bright and dim part, as defined by the peak flux. Additional analysis is needed to determine whether this splitting is only a mathematical byproduct of the analysis or has some real physical meaning.

Original languageEnglish
JournalProceedings of Science
Volume2012-May
Publication statusPublished - Jan 1 2012
Event2012 Gamma-Ray Bursts Conference, GRB 2012 - Munich, Germany
Duration: May 7 2012May 11 2012

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Classification of Fermi Gamma-RAY Bursts. / Horváth, I.; Balázs, L.; Hakkila, Jon; Bagoly, Z.; Preece, Robert D.

In: Proceedings of Science, Vol. 2012-May, 01.01.2012.

Research output: Contribution to journalConference article

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AU - Hakkila, Jon

AU - Bagoly, Z.

AU - Preece, Robert D.

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AB - The Fermi GBM Catalog has been recently published. Previous classification analyses of the BATSE, RHESSI, BeppoSAX, and Swift databases found three types of gamma-ray bursts. Now we analyzed the GBM catalog to classify the GRBs. PCA and Multiclustering analysis revealed three groups. Validation of these groups, in terms of the observed variables, shows that one of the groups coincides with the short GRBs. The other two groups split the long class into a bright and dim part, as defined by the peak flux. Additional analysis is needed to determine whether this splitting is only a mathematical byproduct of the analysis or has some real physical meaning.

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