A possible mechanism for the formation of filaments in the metric radio range

Details A possible mechanism for the formation of filaments in the metric radio range A possible mechanism for the formation of filaments in the metric radio range

Jun 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002sf2a.conf..113l&link_type=abstract

SF2A-2002: Semaine de l'Astrophysique Francaise, meeting held in Paris, France, June 24-29, 2002, Eds.: F. Combes and D. Barret,

Astronomy and Astrophysics

Astrophysics

Scientific paper

Formation of intense magnetic filaments by transverse collapse of small-amplitude parallel Alfven waves is demonstrated using numerical simulations of the Hall-MHD equations and envelope formalism, both for plane waves and longitudinally homogeneous beams. For wave packets, a minimal longitudinal extension is required for a blowup associated with the formation of anisotropic magnetic structures. Including kinetic effects is feasible in the limit of long Alfven waves and is presently under way. When the wave amplitude is increased, the filaments become helicoidal and a (transverse) "reduced MHD" turbulence develops at large longitudinal scales.

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