Plumes and oscillations in the sunspot transition region

被引：31

作者：

Maltby, P

Brynildsen, N

Kjeldseth-Moe, O

Wilhelm, K

机构：

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

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

来源：

ASTRONOMY & ASTROPHYSICS | 2001年 / 373卷 / 01期

关键词：

Sun : oscillations; Sun : transition region; EUV radiation; sunspots;

D O I：

10.1051/0004-6361:20010578

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The suggestion that sunspot transition region oscillations are a typical feature of the sunspot plumes is examined. The present observations show 3 min oscillations in the umbra that end at the umbral rim. We find that sunspot plumes located above the umbra show these oscillations, in contrast to plumes above the penumbra. These two findings suggest that the oscillations may be a property of the umbral transition region.

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收藏

页码：L1 / L4

页数：4

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