Computer Science
Scientific paper
Aug 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd...1e..22c&link_type=abstract
Cosmic Particle Acceleration, 26th meeting of the IAU, Joint Discussion 1, 16-17 August, 2006, Prague, Czech Republic, JD01, #22
Computer Science
Scientific paper
Magnetic field concentrations have been found in solar flares as recently observed in EUV. The electron beams streaming down to the chromosphere may heat the ambient plasma to very high temperatures in multi-temperature plasma. Emission from the very hot thin tubes within the typical cm-microwave source volume may have a counterpart in EUV/Soft X-rays unresolved by the instruments but with enough emission to be detected by submillimeter radio telescopes. We investigate relativistic gyrosynchrotron emission from thermal electrons in a high magnetic field (B>1000 G) in order to explain the newly observed Terahertz solar burst component. The results show a double peak spectrum resulting from the emissions of the non-thermal electrons and the heated plasma. Figure shows two observed solar bursts in the cm and sub-mm (diamonds) ranges with our calculated spectrum (thick line). Very small volumes of the order of 10^24-25 cm^3 of hot material at temperatures of the order of 10^9 K, at loop footpoint are necessary to explain the observations in the submillimeter range.
Costa Joaquim E. Rezende
Simões J. A. P.
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