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Summary: 71
ENERGETIC PARTICLE ACCELERATION AND RADIATION IN EVOLVING
COMPLEX ACTIVE REGIONS
A.Anastasiadis1
, C. Gontikakis2
, N. Vilmer3
, and L. Vlahos4
1
National Observatory of Athens, Institute for Space Applications and Remote Sensing,
152 36 Penteli, GREECE
2
Research Center for Astronomy and Applied Mathematics, Academy of Athens, GREECE
3
LESIA, Observatoire de Paris-Meudon, 92195 Meudon Cedex, FRANCE
4 Department of Physics, University of Thessaloniki, 54124 Thessaloniki, GREECE
ABSTRACT
We present a model for the acceleration and radiation of solar energetic particles (electrons) in an
evolving active region. The spatio - temporal evolution of the active region is calculated using a
Cellular Automaton (CA) model for the energy release process. The acceleration of electrons is due to
the presence of randomly placed, localized electric fields. We calculate the resulting kinetic energy
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