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タイトルTemperature structure of active regions deduced from helium-like sulphur lines
著者（英）Shimizu, Toshifumi; Hara, Hirohisa; Lang, James; Phillips, Kenneth J. H.; Bromage, Barbara J. I.; Watanabe, Tetsuya; Bentley, Robert D.; Fludra, Andrzej; Pike, C. David; Hiei, Eijiro
著者所属（英）NASA Headquarters
発行日1995-03-01
言語eng
内容記述Solar active-region temperatures have been determined from the full-Sun spectra of helium-like sulfur (S XV) observed by the Bragg Crystal Spectrometer on Board the Yohkoh satellite. The average temperature deduced from S XV is demonstrated to vary with the solar activity level: A temperature of 2.5 x 10(exp 6) K is derived from the spectra taken during low solar activity, similar to the general corona, while 4 x 10(exp 6) K is obtained during a higher activity phase. For the latter, the high- temperature tail of the differential emission measure of active regions is found most likely due to the superposition of numerous flare-like events (micro/nano-flares).
NASA分類SOLAR PHYSICS
レポートNO95A91424
権利Copyright


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