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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