Repeated Bifurcation of Relativistic Magnetic Pulse and Cosmic Gamma-Ray Bursts

Edison Liang; Kazumi Nishimura

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Repeated Bifurcation of Relativistic Magnetic Pulse and Cosmic Gamma-Ray Bursts

Edison Liang·Kazumi Nishimura

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Abstract

The diverse and complex light curves of gamma-ray bursts (GRBs) remain an outstanding astrophysical mystery. Here we report the results of 2-1/2-dimensional particle-in-cell (PIC) simulations of the relativistic expansion of magnetized electron-positron plasmas. When the simulation is carried to >150 light-crossing time of the initial plasma, the plasma pulse reproduces many of the GRB features. Remarkably, the plasma pulse bifurcates repeatedly, leading to a complex, multi-peak structure at late times, resembling GRB profiles.

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BibTeX RIS

Edison Liang, Kazumi Nishimura. 2003-08-18. Repeated Bifurcation of Relativistic Magnetic Pulse and Cosmic Gamma-Ray Bursts. https://arxiv.org/abs/astro-ph/0308301

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