Are GRB shocks mediated by the Weibel instability?

Details Are GRB shocks mediated by the Weibel instability? Are GRB shocks mediated by the Weibel instability?

2005-12-22

arxiv.org/abs/astro-ph/0512579v1

Astrophys.J.647:1250-1254,2006

Astronomy and Astrophysics

Astrophysics

13 pages, 3 figures

Scientific paper

10.1086/505523

It is estimated that the Weibel instability is not generally an effective mechanism for generating ultrarelativistic astrophysical shocks. Even if the upstream magnetic field is as low as in the interstellar medium, the shock is mediated not by the Weibel instability but by the Larmor rotation of protons in the background magnetic field. Future simulations should be able to verify or falsify our conclusion.

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