HR: 1340h
AN: SM53B-1283    [Abstracts]
TI: Particle acceleration by fluctuating electric fields at a magnetic field null point
AU: * Petkaki, P
EM: ppe@bas.ac.uk
AF: British Antarctic Survey, High Cross Madingley Road, Cambridge, CB3 0ET, United Kingdom
AU: MacKinnon, A L
EM: a.mackinnon@educ.gla.ac.uk
AF: University of Glasgow, DACE/Physics and Astronomy, Glasgow, G12 8QQ, United Kingdom
AB: Particle acceleration consequences from fluctuating electric fields superposed on an X-type magnetic field in collisionless solar plasma are studied. Such a system is chosen to mimic generic features of dynamic reconnection, or the reconnective dissipation of a linear disturbance. We explore numerically the consequences for charged particle distributions of fluctuating electric fields superposed on an X-type magnetic field. Particle distributions are obtained by numerically integrating individual charged particle orbits when a time varying electric field is superimposed on a static X-type neutral point. This configuration represents the effects of the passage of a generic MHD disturbance through such a system. Different frequencies of the electric field are used, representing different possible types of wave. The electric field reduces with increasing distance from the X-type neutral point as in linear dynamic magnetic reconnection.
DE: 7519 Flares
DE: 7835 Magnetic reconnection (2723, 7526)
DE: 7845 Particle acceleration
DE: 7857 Stochastic phenomena (3235, 3265, 4475)
SC: SPA-Magnetospheric Physics [SM]
MN: 2007 Fall Meeting