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On the Power Spectrum Density of Gamma Ray Bursts

Motoko Suzuki·Masahiro Morikawa·Izumi Joichi
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Abstract

Gamma ray bursts (GRBs) are known to have short-time variability and power-law behavior with the index -1.67 in the power spectrum density. Reanalyzing the expanded data, we have found a) the power-law comes from the global profile of the burst and not from the self-similar shots nor rapid fluctuations in the luminosity profile. b) The power indices vary from burst to burst and the value -1.67 is given simply as the mean value of the distribution; there is no systematic correlation among GRBs to yield the power law.

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Motoko Suzuki, Masahiro Morikawa, Izumi Joichi. 2001-04-13. On the Power Spectrum Density of Gamma Ray Bursts. https://doi.org/10.1007/10856495_28

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