Extreme-ultraviolet sunspot plumes observed with SOHO

被引：28

作者：

Maltby, P

Brynildsen, N

Brekke, P

Haugan, SVH

Kjeldseth-Moe, O

Wikstol, O

Rimmele, T

机构：

[1] Univ Oslo, Inst Theoret Astrophys, N-0315 Oslo, Norway

[2] Natl Solar Observ, Sunspot, NM 88349 USA

来源：

ASTROPHYSICAL JOURNAL | 1998年 / 496卷 / 02期

基金：

美国国家航空航天局;

关键词：

Sun; corona; transition region; UV radiation; sunspots;

D O I：

10.1086/311261

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Bright EUV sunspot plumes have been observed in five out of nine sunspot regions with the Coronal Diagnostic Spectrometer on the Solar and Heliospheric Observatory. In the other four regions, the brightest line emissions may appear inside the sunspot but are mainly concentrated in small regions outside the sunspot areas. These results are in contrast to those obtained during the Solar Maximum Mission but are compatible with the Skylab mission results. The present observations show that sunspot plumes are formed in the upper part of the transition region, occur in both magnetic unipolar and bipolar regions, and may extend from the umbra into the penumbra.

引用

页码：L117 / +

页数：5

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