Physics
Scientific paper
Sep 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008espm...12.3.53p&link_type=abstract
"12th European Solar Physics Meeting, Freiburg, Germany, held September, 8-12, 2008. Online at http://espm.kis.uni-freiburg.de/,
Physics
Scientific paper
The space craft measurements during a solar flare demonstrate that electron precipitation with energy up to hundreds keV along the magnetic field lines to solar surface takes place. Precipitation of these particles on the solar surface is analogous with particle precipitation in aurora, but the energy in aurora is not so big. The thermal source of X-ray radiation in the corona appears above an active region. Such scenario of the flare is explained by electrodynamical solar flare model based on 3D MHD numerical simulation that demonstrate the energy accumulated in a current sheet can exceed 1e32 erg. The coronal source appears in the current sheet during fast energy release due to magnetic reconnection. The electron beams are accelerated in the field-aligned currents that generated by the Hall electric field produced in the current sheet. The development of neutron monitor data demonstrates two components of solar cosmic rays. The prompt cosmic ray component is generated during main energy release. This component consists of protons moving along the interplanetary magnetic lines. The exponential spectrum of these protons is in agreement with particle acceleration by the Lorenz electric field along the magnetic singular line in a current sheet. The similar effect has been observed in the laboratory experiments with high power discharge - pinch discharge. The similarity and difference of particle acceleration in a linear pinch effect and in the current sheet is discussed. The flares produce also a delayed component with power spectrum E^{-gamma} with gamma ~ 5. Such big gamma is difficult to explain by acceleration in a shock. Apparently, the delayed component spectrum is formed during particle diffusion in the turbulent magnetic field.
Podgorny A.
Podgorny I.
Vashenyuk E.
No associations
LandOfFree
Hard Solar Flare Radiations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Hard Solar Flare Radiations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hard Solar Flare Radiations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1796289