Large Doppler shifts in X-ray plasma: An explosive start to coronal mass ejection

被引：39
|
作者：
Innes, DE
Curdt, W
Schwenn, R
Solanki, S
Stenborg, G
McKenzie, DE
机构：
[1] Max Planck Inst Aeron, D-37191 Katlenburg Lindau, Germany
[2] Montana State Univ, Dept Phys, Bozeman, MT 59717 USA
来源：
ASTROPHYSICAL JOURNAL | 2001年 / 549卷 / 02期
基金：
美国国家航空航天局;
关键词：
Sun : flares; Sun : UV radiation; Sun; X-rays; gamma rays;
D O I：
10.1086/319164
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report observations, taken with the Solar Ultraviolet Measurements of Emitted Radiation spectrometer, of spatially resolved high red and blue Doppler shifts (up to 650 km s(-1)) from X-ray-emitting plasma in the corona above a flare. The high Doppler shifts are seen minutes after a fast, faint optical front is seen racing through the same part of the corona in images taken with the Mirror Coronagraph for Argentina. The association of the large-scale fast optical emission front with soft X-ray emission and high Doppler shifts suggests plasma heating and acceleration in the wake of a shock.
引用
收藏
页码：L249 / L252
页数：4
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