Physical problems (microphysics) in relativistic plasma flows

Details Physical problems (microphysics) in relativistic plasma flows Physical problems (microphysics) in relativistic plasma flows

2006-10-11

arxiv.org/abs/astro-ph/0610345v1

AIPConf.Proc.856:109-128,2006

Astronomy and Astrophysics

Astrophysics

19 pages, 18 figures

Scientific paper

10.1063/1.2356387

Many problems in astrophysics involve relativistic outflows. The plasma dynamics in these scenarios is critical to determine the conditions for the self-consistent evolution of the fields and particle acceleration. Advances in computer power now allow for kinetic plasma simulations, based on the particle-in-cell (PIC) paradigm, capable of providing information about the role of plasma instabilities in relativistic outflows. A discussion of the key issues associated with PIC simulations is presented, along with some the most important results and open questions, with a particular emphasis on the long time evolution of the filamentation, or Weibel, instability, and on the possible collisionless mechanisms for particle acceleration arising in the collision of relativistic plasma shells.

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