期刊
ADVANCES IN SPACE RESEARCH
卷 46, 期 11, 页码 1400-1408出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.asr.2010.08.008
关键词
Sun; Corona; Solar wind; MHD model
类别
资金
- National Institute for Astrophysics (INAF) [I/023/09/0]
- Italian Space Agency (ASI) [I/023/09/0]
- Agenzia Spaziale Italiana [ASI/I/035/05/0]
- Ministero dell'Istruzione, dell'Universita e della Ricerca [ASI/I/035/05/0]
- NASA
- NSF
The study concerns the streamer belt observed at high spectral resolution during the minimum of solar cycle 23 with the Ultraviolet Coronagraph Spectrometer (UVCS) onboard SOHO. On the basis of a spectroscopic analysis of the 0 VI doublet, the solar wind plasma parameters are inferred in the extended corona. The analysis accounts for the coronal magnetic topology, extrapolated through a 3D magneto-hydrodynamic model, in order to define the streamer boundary and to analyse the edges of coronal holes. The results of the analysis allow an accurate identification of the source regions of the slow coronal wind that are confirmed to be along the streamer boundary in the open magnetic field region. (C) 2010 COSPAR. Published by Elsevier Ltd. All rights reserved.
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