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A New Discriminator for Gamma-Ray Burst Classification: The Epeak-Fluence Energy Ratio

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arxiv 1009.2105 v1 pith:5CMHGVWG submitted 2010-09-10 astro-ph.HE

A. Goldstein , R. D. Preece , M. S. Briggs This is my paper · ORCID
classification astro-ph.HE
keywords batseburstburstsdiscriminatorgamma-raypeak-fluencerelationresults
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Using the derived gamma-ray burst E_peak and fluences from the complete BATSE 5B Spectral Catalog, we study the ensemble characteristics of the E_peak-fluence relation for GRBs. This relation appears to be a physically meaningful and insightful fundamental discriminator between long and short bursts. We discuss the results of the lower limit test of the E_peak-E_iso relations in the E_peak-fluence plane for BATSE bursts with no observed redshift. Our results confirm the presence of two GRB classes as well as heavily suggesting two different GRB progenitor types.

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