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EP: Fachverband Extraterrestrische Physik

EP 10: Poster

EP 10.27: Poster

Wednesday, March 28, 2007, 18:00–20:00, H46

The filamentation instability in magnetized plasmas — •Anne Stockem and Reinhard Schlickeiser — Theoretische Physik IV, Ruhr-Universität Bochum, Germany

The existence of magnetic fields in astrophysical objects like jets or even galaxies has been proven by observations. The relativistic two-stream instability could be one physical process to explain the amplification of an already present seed magnetic field. A small fluctuation of the field is able to make counterstreaming charged particles unstable. There is, however, a condition to the seed field. If it exceeds a critical value, the particle streams are forced to stay stable. In this presentation an upper limit for the magnetic field strength is derived.