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| Titel |
Electron acceleration in electric circuits during solar flares |
| VerfasserIn |
G. Mann, H. Onel |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250021485
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| Zusammenfassung |
| During solar flares a huge amount of energy is suddenly released in the corona.
They are accompanied by enhanced emissions of electromagnetic waves from the
radio up to the hard X-ray range indicating the generation of energetic electrons
during flares. A large amount of the flare energy is deposited into the energetic
electrons. It is not fully understood in which way such a large number of electrons is
accelerated up to high energies within a fraction of a second. We present a flare model in
terms of electric circuits located in the solar atmosphere. The circuit is driven by the
photospheric motion. The electrons are accelerated by the DC electric field appearing in
the coronal loops if the circuit is closed via the corona. The theoretically obtained
results, e.g. differential fluxes of energetic electrons, are compared with RHESSI
observations, e.g. the production rate of energetic electrons and their related power during
flares. |
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