| タイトル | A study of solar flare energy transport based on coordinated H-alpha and X-ray observations |
| 著者（英） | Wulser, Jean-Pierre; Canfield, Richard C.; Zarro, Dominic M.; Dennis, Brian R. |
| 著者所属（英） | Applied Research Corp.|Hawaii Univ.|Lockheed Missiles and Space Co.|NASA Goddard Space Flight Center |
| 発行日 | 1991-02-01 |
| 言語 | eng |
| 内容記述 | The temporal evolution of the ratio between H-alpha to nonthermal hard X-ray emission was investigated using coordinated H-alpha and hard- and soft-X-ray observations of five solar flares (on May 7, June 23, June 24, and June 25, 1980 and on April 30, 1985). These observations were used to estimate the emitted flare energy flux F(H-alpha) in H-alpha, the flux of F(2O) energy deposited by nonthermal electrons with energies above 20 keV, and the pressure p(c) of soft X-ray-emitting plasma as functions of time during the impulsive phase of each flare. It was found that the F(H-alpha)/F(2O) ratio shows a power-law dependence on F(2O), with a slope that differs slightly from that predicted by the static thick-target model of solar transport. Results also indicate that the power-law dependence is modified by hydrostatic pressure effects. |
| NASA分類 | SOLAR PHYSICS |
| レポートNO | 91A22703 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/350461 |
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