期刊
ASTRONOMY & ASTROPHYSICS
卷 435, 期 2, 页码 733-741出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361:20042460
关键词
Sun : corona; Sun : UV radiation; line : profiles; instrumentation : spectrographs
Observations of the solar equatorial corona between heights of 36 Mm and 184 Mm above the limb obtained by the SOHO spectrometers CDS and SUMER in December 2003 are presented and discussed with special emphasis on the widths of the spectral lines Mg. at 62.50 nm, Al XI at 55.00 nm and 56.82 nm, Ca. at 55.78 nm, and Si.. at 58.09 nm. SUMER observed, in addition, the lines Mg X 60.98 nm, Ca X 57.40 nm, Fe XII 124.20 nm, Fe XVII 115.31 nm, and Ca XIII 113.37 nm. The Si XII 52.11 nm line was only observed by CDS. A different behaviour of the line width of Mg. 62.50 nm as a function of height above the limb had been found in studies carried out independently with both instruments at different times. It is the aim of this joint investigation to ( a) study instrumental effects on line-width results; and (b) provide a thorough analysis of line profiles with altitude for the new campaign.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据