Correlations between Lag, Duration, Peak Luminosity, Hardness, and Asymmetry in Long GRB Pulses

Details Correlations between Lag, Duration, Peak Luminosity, Hardness, and Asymmetry in Long GRB Pulses Correlations between Lag, Duration, Peak Luminosity, Hardness, and Asymmetry in Long GRB Pulses

2009-01-20

arxiv.org/abs/0901.3171v1

AIP Conf.Proc.1133:379-384,2009

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

6 pages, 10 figures, 2 tables, to appear in the proceedings of the Sixth Huntsville Gamma-Ray Burst Conference 2008, edited by

Scientific paper

10.1063/1.3155923

Continued study of the BATSE catalog verifies previously-identified correlations between pulse lag and pulse duration and corresponding anti-correlations between both properties and pulse peak flux for a large sample of Long GRB pulses; the study also finds correlations between pulse peak lags, pulse asymmetry, and pulse hardness. These correlations apparently can be used to delineate Long GRBs from Short ones. Correlated pulse properties represent constraints that can be used to guide theoretical modeling, whereas bulk prompt emission properties appear to be constructed by combining and smearing out pulse characteristics in ways that potentially lose valuable information.

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