Plasma jets in the solar atmosphere observed in EUV emission lines by SUMER on SOHO

被引：0

作者：

Wilhelm, K ^{[1
]}

Innes, DE ^{[1
]}

Curdt, W ^{[1
]}

Kliem, B ^{[1
]}

Brekke, P ^{[1
]}

机构：

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

来源：

PROCEEDINGS OF AN INTERNATIONAL MEETING ON SOLAR JETS AND CORONAL PLUMES | 1998年 / 421卷

关键词：

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Out of the many plasma jets observed in EUV emission lines by SUMER on SOHO in the transition region of the solar atmosphere, three events are described in detail and the prevailing plasma parameters are investigated. The jets occurred under very different conditions ranging from an active region network high-velocity event to a quiet Sun cell explosive event. Consequently, the characteristic features substantially varied from event to event. The most striking distinction is the behaviour of the high-temperature lines (Ne VIII, Mg VIII, and Mg IX), which show the events in the more active sites, but not in the cell event. Line radiance ratios provide electron temperature and density diagnostics. It appears as if all three events carl be understood as plasma acceleration effects of magnetic cancellation activity.

引用

页码：103 / 114

页数：12