✦ LIBER ✦

Solar XUV limb brightening observations

✍ Scribed by George L. Withbroe

Publisher: Springer
Year: 1970
Tongue: English
Weight: 590 KB
Volume: 11
Category: Article
ISSN: 0038-0938
DOI: 10.1007/bf00155221

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✦ Synopsis

Limb brightening of XUV lines of the ions Cm Nm, Niv, Ore, Oiv, Ov and Silv is compared with that predicted by a modified version of a coronal model developed by Dupree and Goldberg. Systematic differences between the predicted and observed limb brightening are found. These differences can be eliminated by introducing into the model the effects of spicules that extend up into the chromospheric-coronal transition region. The spicules are assumed to be opaque to radiation between 500 and 900A. because of absorption in the hydrogen Lyman continuum.

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