Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2010-07-28
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
4 pages, 5 figures, submitted to ApJL
Scientific paper
Two dimensional modeling of collisionless shocks has been of tremendous importance in understanding the physics of the non-linear evolution, momentum transfer and particle acceleration, but current computer capacities have now reached a point where three dimensional modeling is becoming feasible. We present the first three dimensional model of a fully developed and relaxed relativistic ion-electron shock, and analyze and compare it to similar 2D models. Quantitative and qualitative differences are found with respect to the two-dimensional models. The shock jump conditions are of course different, because of the extra degree of freedom, but in addition it is found that strong parallel electric fields develop at the shock interface, the level of magnetic field energy is lower, and the non-thermal particle distribution is shallower with a powerlaw index of ~2.2.
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