Computer Science – Sound
Scientific paper
Feb 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985soph...95..281h&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 95, Feb. 1985, p. 281-295.
Computer Science
Sound
4
Extreme Ultraviolet Radiation, Rocket Sounding, Solar Activity, Solar Flares, Carbon, Electron Energy, Lyman Spectra, Microchannel Plates, Photosphere, Solar Temperature
Scientific paper
Images of a flare and active regions were obtained in the extreme ultraviolet emission lines such as C III 977 A, Ne VIII 770 A, and H I L-beta, and hydrogen Lyman continua with a spatial resolution of less than ten seconds of arc together with one-dimensional scanning at 1650 A. A microchannel plate was used as a detector, and pointing accuracy was, for about half of the observation time, around 0.5 arc sec. The relationship between the shape of the flare and the structure of the photospheric magnetic field is discussed. A map of the electron-temperature distribution derived from the intensity ratio of the Lyman continua at 880 A and 815 A showed a lower temperature in regions of higher activity. A very small geometrical thickness of 50-500 m in the C III emitting region of the flare was found. And the layer emitting the continuum in 1650 A is shown to be at a temperature of 5300 K in the flare and 4700 K in active regions.
Akita K.
Hirayama Tadashi
Nishi Keizo
Sakurai Takashi
Tanaka Kanenobu
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