A Laboratory Plasma Experiment for Studying Magnetic Dynamics of Accretion Discs and Jets

Details A Laboratory Plasma Experiment for Studying Magnetic Dynamics of Accretion Discs and Jets A Laboratory Plasma Experiment for Studying Magnetic Dynamics of Accretion Discs and Jets

2002-02-20

arxiv.org/abs/astro-ph/0202380v1

Mon.Not.Roy.Astron.Soc. 334 (2002) 257

Astronomy and Astrophysics

Astrophysics

accepted for publication in MNRAS

Scientific paper

10.1046/j.1365-8711.2002.05422.x

This work describes a laboratory plasma experiment and initial results which should give insight into the magnetic dynamics of accretion discs and jets. A high-speed multiple-frame CCD camera reveals images of the formation and helical instability of a collimated plasma, similar to MHD models of disc jets, and also plasma detachment associated with spheromak formation, which may have relevance to disc winds and flares. The plasmas are produced by a planar magnetized coaxial gun. The resulting magnetic topology is dependent on the details of magnetic helicity injection, namely the force-free state eigenvalue alpha_gun imposed by the coaxial gun.

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