Other
Scientific paper
Jan 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004iaus..219..776z&link_type=abstract
Stars as suns : activity, evolution and planets, Proceedings of the 219th symposium of the International Astronomical Union held
Other
Scientific paper
We investigate particle acceleration in caused by a super-Dreicer electric field occurring on the top of reconnecting magnetic loops in a non-neutral current sheet. A magnetic field topology in the current sheet is defined by a strong tangential component and two small perpendicular and longitudinal components of magnetic field with electric field being directed along the longitudinal one. The electron and proton trajectories in the current sheet their energy spectra at the ejection point from the sheet and during their scattering on MHD waves inside the loop legs are calculated. A direct super-Dreicer electric field of the current sheet is found to accelerate particles to the coherent energy spectra around 1 MeV for electrons and 100 KeV for protons. The protons and electrons are found ejected from the current sheet into opposite sides of its midplane leading to electrons precipitating into one leg of the reconnecting loops while protons - into the other one. The charge separation leading to a delay of proton versus electron travel times into a standard loop is applied for interpretation of a spatial asymmetry of the two footpoint X-ray images in a few flares observed with the RHESSI.
Gordovskyy Mykola
Zharkova Valentin
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