HR: 12:10h
AN: SH22A-07    [Abstracts]
TI: Optical and UV Emission of Solar Flares: Multiwavelength Observations and Modelling
AU: * Kasparova, J
EM: kasparov@asu.cas.cz
AF: Astronomicky ustav AV CR, v.v.i., Fricova 298, Ondrejov, 25165, Czech Republic
AU: Heinzel, P
EM: pheinzel@asu.cas.cz
AF: Astronomicky ustav AV CR, v.v.i., Fricova 298, Ondrejov, 25165, Czech Republic
AB: Solar flares reveal themselves in various ranges of electromagnetic emission and exhibit temporal variations down to sub-second scale, namely during the so-called impulsive phase. This contribution will focus on spatial and temporal variations of the optical and UV emissions which are thought to be driven by flare energy transport in the form of accelerated particles. We will review our current understanding of the formation of optical and UV emissions during the impulsive phase. Namely, we will discuss recent radiative-hydrodynamic models and various physical processes playing an important role in radiation transfer and formation of optical and UV spectra. We will also report on recent interpretations of observations in various lines and continua and discuss their importance for the diagnostics of the flare atmosphere structure and the presence of accelerated particles in the emission formation regions.
DE: 7519 Flares
SC: SPA-Solar and Heliospheric Physics [SH]
MN: 2007 Joint Assembly