Physics
Scientific paper
May 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984soph...92..271k&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 92, May 1984, p. 271-281.
Physics
2
Centimeter Waves, Solar Flares, Solar Radio Emission, Solar X-Rays, Chromosphere, H Alpha Line, Nonthermal Radiation, Solar Spectra, Synchrotron Radiation
Scientific paper
Simultaneous high resolution soft X-ray, and 6-cm images of the decay phase of an M3 X-ray flare in Hale Region 16413 have been compared. The X-ray images were obtained with a sounding rocket flown on November 7, 1979 and the 6-cm observations were made with the VLA. A large loop system approximately 1.3 arc min in length, with an average temperature of about 8,000,000 K made up the X-ray flare structure. The peak 6-cm emission seemed to originate from a region below the X-ray loop, and its predicted flux due to thermal bremsstrahlung was approximately one order of magnitude less than observed. The expected gyroresonance absorption is examined through a loop geometry model, and it is found that thermal gyroresonance emission requiring large azimuthal or radial field components, or non-thermal gyrosynchrotron emission which involves continuous electron acceleration, may explain the observations.
Davis Mark J.
Kahler Stephen W.
Kundu Mukul R.
Webb David F.
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