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Nonthermal broadening of the Fe X $\lambda 6374 \AA$ and Fe XIV $\lambda 5303 \AA$ coronal lines and its correlation with the intensity

Published online by Cambridge University Press:  14 March 2005

N.F. Tyagun
N.F. Tyagun
Affiliation:
Institute of Solar-Terrestrial Physics SB RAS, 664033, Irkutsk, P.O.Box 4026, Russia email: [email protected] Present address: Institute of Solar-Terrestrial Physics, 664033, Irkutsk, P.O.Box 4026, Russia
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Abstract

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The results of research of halfwidhts ($\Delta\lambda$) and intensities (W) of Fe X $\lambda 6374 \AA$ and Fe XIV $\lambda 5303\AA$ spectral lines using observations obtained with the Large coronagraph of the Sayan observatory in 1968-1983 show the inverse correlation between $\Delta\lambda$ and W always exists for Fe X $\lambda 6374 \AA$; it takes place at all latitudes at the same height as well as with height irrespectively of activity level. For Fe XIV $\lambda 5303 \AA$ this correlation varies from direct to inverse depending on activity level. It is shown that relation type between $\Delta\lambda$ and W for different spectral lines is determined by different coronal structurednesses in these lines.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUS223 , June 2004 , pp. 403 - 404
Copyright
© 2004 International Astronomical Union