Implications of X-ray observations for electron acceleration and propagation in solar flares

Holman, G.D., Aschwanden, M.J., Aurass, H., Battaglia, M., Grigis, P.C., Kontar, E.P. , Liu, W., Saint-Hilaire, P. and Zharkova, V.V. (2011) Implications of X-ray observations for electron acceleration and propagation in solar flares. Space Science Reviews, 159(1-4), pp. 107-166. (doi:10.1007/s11214-010-9680-9)

Holman, G.D., Aschwanden, M.J., Aurass, H., Battaglia, M., Grigis, P.C., Kontar, E.P. , Liu, W., Saint-Hilaire, P. and Zharkova, V.V. (2011) Implications of X-ray observations for electron acceleration and propagation in solar flares. Space Science Reviews, 159(1-4), pp. 107-166. (doi:10.1007/s11214-010-9680-9)

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Abstract

High-energy X-rays and γ-rays from solar flares were discovered just over fifty years ago. Since that time, the standard for the interpretation of spatially integrated flare X-ray spectra at energies above several tens of keV has been the collisional thick-target model. After the launch of the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) in early 2002, X-ray spectra and images have been of sufficient quality to allow a greater focus on the energetic electrons responsible for the X-ray emission, including their origin and their interactions with the flare plasma and magnetic field. The result has been new insights into the flaring process, as well as more quantitative models for both electron acceleration and propagation, and for the flare environment with which the electrons interact. In this article we review our current understanding of electron acceleration, energy loss, and propagation in flares. Implications of these new results for the collisional thick-target model, for general flare models, and for future flare studies are discussed.

Item Type:Articles
Additional Information:Also available as a book chapter in High-Energy Aspects of Solar Flares, Edited by Emslie, A.G., Dennis, B.R., Lin, R.P., Hudson, H, ISBN: 9781461430728, Springer, 2012. http://www.springer.com/la/book/9781461430728
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Kontar, Dr Eduard and Battaglia, Dr Marina
Authors: Holman, G.D., Aschwanden, M.J., Aurass, H., Battaglia, M., Grigis, P.C., Kontar, E.P., Liu, W., Saint-Hilaire, P., and Zharkova, V.V.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Space Science Reviews
ISSN:0038-6308
ISSN (Online):1572-9672
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