Physics
Scientific paper
Jul 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983soph...86..185h&link_type=abstract
(Japan Society for the Promotion of Science and National Science Foundation, U.S.-Japan Seminar on the Recent Advances in the Un
Physics
Coronal Loops, Limb Brightening, Solar Flares, Solar Prominences, Solar Spectra, Electron Density (Concentration), Energy Transfer, H Alpha Line, Solar Electrons, Solar Instruments, Solar X-Rays
Scientific paper
An analysis is presented of the flare activity observed near the limb with two coronagraphs at the Norikura Solar Observatory and the Soft X-ray Crystal Spectrometer on the Hinotori satellite. It was found that H-alpha brightenings occurred following a prominence activation on the disk near the prominence. The prominence was found to become very bright and its electron density increased to 10 exp 12.8/cu cm in approximately 0.5 hour. Approximately 0.5 hour after the onset of the flare, loop prominance systems were observed above the H-alpha brightenings and were detected in the coronal lines Ca XV 5694 A, Fe XIV 5303 A, and Fe X 6374 A. In addition, shifted and asymmetric profiles of the emission line at 5303 A were sometimes observed, as well as turbulent phenomena in the thermal phase. It is determined that the energy release site of the flare at the onset would be lower than 20,000 km above the solar limb.
Hiei Eijiro
Okamoto Tohru
Tanaka Kanenobu
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