On the Fast Spectral Variability of GRBs
E. P. Mazets, R. L. Aptekar, P. S. Butterworth, T. L. Cline, D. D. Frederiks, S. V. Golenetskii, V. N. Il'inskii, V. D. Pal'shin
Abstract
Fast spectral variability of gamma-ray burst emission is considered for a number of events seen by the Konus-Wind experiment. The variability manifests itself as a strong correlation between instantaneous energy flux F and peak energy Ep. In the (F,Ep) plane, the correlation produces distinct tracks in the form of branches and loops representing the different parts of a burst time history. Despite the variety of features seen in different events, the main characteristics of the spectral evolution produce a quite consistent pattern.
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