A Diamagnetic Relativistic Pulse Origin of Cosmic Gamma-Ray Bursts

Details A Diamagnetic Relativistic Pulse Origin of Cosmic Gamma-Ray Bursts A Diamagnetic Relativistic Pulse Origin of Cosmic Gamma-Ray Bursts

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003head....7.1609l&link_type=abstract

American Astronomical Society, HEAD meeting #7, #16.09; Bulletin of the American Astronomical Society, Vol. 35, p.622

Astronomy and Astrophysics

Astrophysics

Scientific paper

Using multi-dimensional Particle-in-Cell (PIC) simulations of collisionless plasmas, we recently discovered a new particle energization mechanism based on the relativistic expansion of a strongly magnetized (plasma thermal energy/magnetic energy < 1) hot (kT MeV) plasma. For an electron-positron (e+e-) plasma, this mechanism, which we call the diamagnetic relativistic pulse accelerator (DRPA), efficiently converts >80 into the ultra-relativistic directed energy of a small fraction of surface particles. When such PIC simulations are continued to >10000 gyroperiods, key features emerge which resemble the unique signatures of cosmic gamma-ray bursts (GRBs), including their spectra, time profiles and spectral evolution. In this paper we will highlight the key results of these PIC simulations and their astrophysical manifestations.

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