Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992pasj...44l.117i&link_type=abstract
PASJ: Publications of the Astronomical Society of Japan (ISSN 0004-6264), vol. 44, no. 5, p. L117-L122.
Astronomy and Astrophysics
Astronomy
9
Electron Density (Concentration), Solar Electrons, Solar Flares, Spaceborne Astronomy, X Ray Telescopes, Electron Scattering, Japanese Spacecraft, Solar Corona
Scientific paper
The effective geometrical thickness and electron density of a M3.7 flare of December 2, 1991 were determined from observations by the Yohkoh Soft X-ray Telescope and a newly built Lyot-type coronagraph at the Norikura Solar Observatory, respectively. A very small geometrical thickness of 1000 km was found for the flare, which occurred beyond the limb. The electron density was determined to be 4 x 10 exp 10/cu cm. The implication of the results, related to the mass balance and to the energy-releasing region, is discussed.
Acton Loren W.
Bruner Marilyn E.
Hara Hirohisa
Hirayama Tadashi
Ichimoto Kiyoshi
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