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Quiet corona density model for the last maximum of solar activity

โœ Scribed by Y. Leblanc; J. L. Leroy; P. Pecantet

Publisher
Springer
Year
1973
Tongue
English
Weight
353 KB
Volume
31
Category
Article
ISSN
0038-0938

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โœฆ Synopsis

We have selected observations of quiet K corona in maximum activity phase (1970 and 1972) and we have computed the corresponding density models. The density is found to be two times smaller than in average maximum coronal models (Newkirk, 1967) and nearly equal to that of minimum coronas (Sa'ito, 1970). The research of quiet coronas between active periods has been extended to the three past solar cycles thanks to 25303/~ measurements: very low 25303 ,~ intensities, corresponding to very small densities, are found even in maximum activity phase. A short discussion about the values of average quiet coronal models is given.

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