The Relationship between Synchrotron and Bremsstrahlung Emission of Nonthermal Electrons during a Solar Flare. A detailed study during the August 30, 2002 X1.5 event

Details The Relationship between Synchrotron and Bremsstrahlung Emission of Nonthermal Electrons during a Solar Flare. A detailed study during the August 30, 2002 X1.5 event The Relationship between Synchrotron and Bremsstrahlung Emission of Nonthermal Electrons during a Solar Flare. A detailed study during the August 30, 2002 X1.5 event

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aipc..784..566g&link_type=abstract

MAGNETIC FIELDS IN THE UNIVERSE: From Laboratory and Stars to Primordial Structures. AIP Conference Proceedings, Volume 784, pp

Astronomy and Astrophysics

Astronomy

3

Solar Flares, Solar Radiation, Synchrotron Radiation, Bremsstrahlung, Magnetic Fields, Microwaves, X-Ray Sources (Astronomical), Solar Electromagnetic Emission, Submillimeter, X-Ray

Scientific paper

Synchrotron emission from nonthermal electrons has a strong dependence on the magnetic field of the medium. On the contrary, Bremsstrahlung emission does not depend on the magnetic field. The simultaneous observations of both forms of radiation may give us clues about local magnetic field configuration. In this report we use the optically thin part of the radio spectrum during the microwave maximum of the flare occurred on August 30, 2002, at 1328 UT to determine different mean magnetic field intensities and nonthermal electron density distributions compatible with the observed data. Assuming that the same electrons emit by coulomb interactions, the obtained distributions are used to compute the photon spectrum of the X-Ray emission by Bremsstrahlung and the spectra are compared with observations obtained by instruments on board the RHESSI satellite. We discuss the effects of the trapping on the Bremsstrahlung emitted radiation, giving constraints on both magnetic field intensity and trapping time.

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