Mechanism of light curve variability in the gamma ray bursts |
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| Authors: | Sa?a Simi? Luka ? Popovi? Michael I Andersen Lise Christensen |
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| Institution: | (1) Department of Physics, Faculty of Science, Radoja Domanovica 12, 34000 Kragujevac, Serbia;(2) Astronomical Observatory, Volgina 7, 11000 Belgrade, Serbia;(3) Astrophysikalisches Institut Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany |
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| Abstract: | In this paper we investigate the variability of the gamma ray burst light curve. It is generally known that this fluctuation
arise in the second phase of a GRB event, when two shock waves of different Lorentz factors collide. This is so called internal
shock scenario. We have developed a simple model which includes dynamical and radiating part, to simulate shock wave evolution
and collision. By specifying the model parameters, we show that this scenario could be used to describe variability of GRB
light curve. We then use the model to simulate peeks in several different long GRB events from the BATSE database, which show
us that some of the basic parameters have a very narrow range of values.
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| Keywords: | Gamma ray burst Shock waves |
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