Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-02-12
Astronomy and Astrophysics
Astrophysics
Scientific paper
10.1051/0004-6361:20077144
Context: Hard X-ray emission of coronal sources in solar flares has been observed and studied since its discovery in Yohkoh observations. Several models have been proposed to explain the physical mechanisms causing this emission and the relations between those sources and simultaneously observed footpoint sources. Aims: We investigate and test one of the models (intermediate thin-thick target model) developed on the basis of Yohkoh observations. The model makes precise predictions on the shape of coronal and footpoint spectra and the relations between them, that can be tested with new instruments such as RHESSI. Methods: RHESSI observations of well observed events are studied in imaging and spectroscopy and compared to the predictions from the intermediate thin-thick target model. Results: The results indicate that such a simple model cannot account for the observed relations between the non-thermal spectra of coronal and footpoint sources. Including non-collisional energy loss of the electrons in the flare loop due to an electric field can solve most of the inconsistencies.
Battaglia Marina
Benz Arnold O.
No associations
LandOfFree
Exploring the connection between coronal and footpoint sources in a thin-thick target solar flare model 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 Exploring the connection between coronal and footpoint sources in a thin-thick target solar flare model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exploring the connection between coronal and footpoint sources in a thin-thick target solar flare model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-633118