Schmieder Brigitte Submitted: 15-Apr-2003 01:49
During a coordinated observational campaign between ground based
observatories (THEMIS and VTT) and space instruments (SOHO/CDS and
MDI, TRACE and RHESSI), an M1 flare has been observed mainly during
its gradual phase. The objective of this study is to use
these multiwavelength observations to study the dynamics and
energetics of the gradual phase and, in particular, to understand
the role of various heating mechanisms.
The NLTE radiative-transfer modeling of the optical lines, together
with RHESSI thick-target data, allow us to
discriminate between the thermal and non thermal
processes. We study the abundance of the atoms and ions at different
temperatures versus time, both in the ribbons and in bright points, and
their relationship with the magnetic configuration.
Participants: Arek Berlicki, Nicole Vilmer, Mein N., Mein P. , Heinzel P.
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