Polar plumes and inter-plume regions as observed by SUMER on SOHO

被引：37
|
作者：
Banerjee, D [1 ]
Teriaca, L
Doyle, JG
Lemaire, P
机构：
[1] Armagh Observ, Armagh BT61 9DG, North Ireland
[2] Univ Paris 11, Inst Astrophys Spatiale, CNRS, Unite Mixte, F-91405 Orsay, France
来源：
SOLAR PHYSICS | 2000年 / 194卷 / 01期
关键词：
D O I：
10.1023/A:1005253413687
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present observations of O VI 1032 Angstrom line profiles obtained with the SUMER instrument on SOHO extending from the solar disk to 1.5 R-. above the limb in the north polar coronal hole. Variations of the intensity and linewidth in the polar plume and inter-plume regions are investigated. We find an anti-correlation between the intensity and the linewidth in the plume and inter-plume regions with detailed plume structures been seen out to 1.5 R-.. Possible implications regarding the magnetic topologies of these two regions and related heating mechanisms are discussed. The O vr linewidth measurements are combined with UVCS output to provide an overview of its variations with height extending up to 3.5 R-.. We find a linear increase of the linewidth from 1 to 1.2 R-., then a plateau followed by a sharp increase around 1.5 R-..
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收藏
页码：43 / 58
页数：16
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