Neutral beams in two-ribbon flares and in the geomagnetic tail

Details Neutral beams in two-ribbon flares and in the geomagnetic tail Neutral beams in two-ribbon flares and in the geomagnetic tail

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apjs...73..333m&link_type=abstract

(NASA and University of New Hampshire, Workshop on Impulsive Solar Flares, 2nd, Durham, NH, Sept. 26-28, 1988) Astrophysical Jou

Physics

46

Geomagnetic Tail, Neutral Beams, Solar Flares, Current Sheets, Electron Beams, Magnetohydrodynamic Stability, Particle Acceleration, Solar Prominences

Scientific paper

The current sheet created in the wake of an erupting filament during a two-ribbon flare is studied. A comparison with the geomagnetic tail shows that the physics of these systems is very similar, and therefore the existence of super Dreicer fields and the generation of netural beams traveling down the postflare loops with small pitch angles may be expected. The observational evidence for neutral beams in flares is reviewed and found to be generally supportive, while contracting the widely held hypothesis of electron beams. A dimensional analysis further demonstrates that the results for self-consistent numerical simulations of the current sheet in the geomagnetic tail can directly be scaled to the coronal current sheet, and the scaling parameters are derived.

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