Observations of 1000 km s-1 Doppler shifts in 107 K solar flare supra-arcade

被引：109

作者：

Innes, DE

McKenzie, DE

Wang, TJ

机构：

[1] Max Planck Inst Aeron, D-37191 Katlenburg Lindau, Germany

[2] Montana State Univ, Dept Phys, Bozeman, MT 59717 USA

来源：

SOLAR PHYSICS | 2003年 / 217卷 / 02期

基金：

美国国家航空航天局;

关键词：

D O I：

10.1023/B:SOLA.0000006874.31799.bc

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

An X1.5 flare on the west limb of the Sun on 21 April 2002 developed a large supra-arcade about 30 min after flare onset. The growth of the supra-arcade can be followed in both TRACE 195 Angstrom images and SUMER spectra. Its growth seems to be associated with dark (in TRACE images), sunward moving channels that descend onto the arcade from above. SUMER recorded Doppler shifts of 800-1000 km s(-1) in Fe XXI 1354 Angstrom from positions where this sunward flow interacts with the arcade tops. We describe the observations, focusing on the relationship of the high Fe XXI line shifts to the sunward moving dark flows.

引用

页码：267 / 279

页数：13

共 16 条

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