๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

A comparison of EUV spectroheliograms and photospheric magnetograms

โœ Scribed by Joseph B. Gurman; George L. Withbroe; John W. Harvey

Book ID
104642932
Publisher
Springer
Year
1974
Tongue
English
Weight
834 KB
Volume
34
Category
Article
ISSN
0038-0938

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โœฆ Synopsis

A comparison of EUV data from the Harvard College Observatory experiment on OSO-6 with photospheric magnetograms from Kitt Peak National Observatory indicates a bipartite relationship between values of the longitudinal field strength B and Mg x intensity I averaged over square areas 35" โ€ข 35": in quiet regions IB/~ I s, where 0.0<~ k< 0.3, and in active regions IB[ "~ I. From these relationships we infer that ]B[ ~ ne 2~ in quiet regions and ]B[ ~ ne 2 in active regions. In addition, the photospheric field beneath a coronal hole is found to be virtually identical to that beneath normal quiet regions.

๐Ÿ“œ SIMILAR VOLUMES

The derivation of temperature gradient a
The derivation of temperature gradient and electron density maps from EUV spectroheliograms
โœ George L. Withbroe ๐Ÿ“‚ Article ๐Ÿ“… 1972 ๐Ÿ› Springer ๐ŸŒ English โš– 987 KB

We discuss spatial variations in electron density at the base of the corona and in the temperature gradient in the chromospheric-coronal transition layer as determined from analysis of maps constructed from Mgx and Ovr spectroheliograms. Both the mapping techniques and results of analyzing EUV spect