Stochastic wake field particle acceleration in Gamma-Ray Bursts

Details Stochastic wake field particle acceleration in Gamma-Ray Bursts Stochastic wake field particle acceleration in Gamma-Ray Bursts

2006-04-11

arxiv.org/abs/astro-ph/0604235v1

AIP Conf.Proc.836:91-96,2006

Astronomy and Astrophysics

Astrophysics

5 pages, 1 figure, submitted to MNRAS

Scientific paper

10.1063/1.2207864

Gamma-Ray Burst (GRB) prompt emission can, for specific conditions, be so powerful and short-pulsed to strongly influence any surrounding plasma. In this paper, we briefly discuss the possibility that a very intense initial burst of radiation produced by GRBs satisfy the intensity and temporal conditions to cause stochastic wake-field particle acceleration in a surrounding plasma of moderate density. Recent laboratory experiments clearly indicate that powerful laser beam pulses of tens of femtosecond duration hitting on target plasmas cause efficient particle acceleration and betatron radiation up to tens of MeV. We consider a simple but realistic GRB model for which particle wake-field acceleration can first be excited by a very strong low-energy precursor, and then be effective in producing the observed prompt X-ray and gamma-ray GRB emission. We also briefly discuss some of the consequences of this novel GRB emission mechanism.

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