Abstract
view Abstract Citations (27) References (18) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Optical and radio observations of the 1980 March 29, April 30, and June 7 flares Rust, D. M. ; Benz, A. ; Hurford, G. J. ; Nelson, G. ; Pick, M. ; Ruzdjak, V. Abstract Ground-based solar observations are analyzed for three of the flares discussed in the accompanying Solar Maximum Mission reports. The principal conclusions are that H-alpha begins to brighten several minutes before the impulsive, hard X-ray bursts, that the preflare heating and impulsive phases of the three flares occurred in loop-shaped structures of about 3500 km semidiameter, and that after the impulsive phase a much larger volume (about 200 times) of flare plasma was present for the flare main phase. Evidence is presented for the escape of 100-500 keV electrons into the larger volume and into the corona during the impulsive phase. For the April 30 flare, the inferred origin of the hard X-ray burst is near the feet of the magnetic loops. Publication: The Astrophysical Journal Pub Date: March 1981 DOI: 10.1086/183507 Bibcode: 1981ApJ...244L.179R Keywords: Radio Observation; Radio Sources (Astronomy); Solar Flares; Solar Maximum Mission; Solar Radiation; Visual Observation; Chromosphere; H Alpha Line; Radio Emission; Solar Corona; Solar Magnetic Field; Solar Wind; Solar X-Rays; Solar Physics full text sources ADS |
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