A synchrotron/inverse compton interpretation of a solar burst producing fast fluxes at lambda 3mm and hard X-rays

Details A synchrotron/inverse compton interpretation of a solar burst producing fast fluxes at lambda 3mm and hard X-rays A synchrotron/inverse compton interpretation of a solar burst producing fast fluxes at lambda 3mm and hard X-rays

Oct 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985stin...8621488k&link_type=abstract

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Physics

Atomic Physics

Bremsstrahlung, Compton Effect, Solar Radio Bursts, X Rays, Brightness Temperature, Infrared Spectra, Quenching (Atomic Physics), Synchrotron Radiation

Scientific paper

The recently discovered new class of solar burst emission component exhibiting very fast pulses (duration approximately 60 ms) at mm-waves only (delta 3 mm) and at hard X-rays, poses serious constraints for interpretations. Ultrarelativistic electrons are likely to be required in order to explain the high spectral turnover frequency. The time scales, however, are too small to be explained by synchrotron losses alone, or by bremsstrahlung losses, unless extremely large ambient plasma densities are assumed. The mm-wave emission is associated with a synchrotron component and hard X-rays with the inverse Compton process. The observed mm-wave emission is in the optically thick part of a spectrum peaking somewhere in the infrared range of frequencies, and the electron energies are reduced primarily by inverse Compton quenching on the synchrotron source photons. The model explains self-consistently the X-rays/sub-mm flux ratio and the short time scales. It also accounts for typical fluxes reported for white light flares.

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