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Evolution of Ca plages of the CSSAR active regions

Published online by Cambridge University Press:  14 August 2015

G. Godoli  and
B. C. Monsignori Fossi
G. Godoli
Affiliation:
Astrophysical Observatory, Catania, Italy
B. C. Monsignori Fossi
Affiliation:
Astrophysical Observatory, Arcetri, Italy

Abstract

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For each plage of the CSSAR period the daily projected areas have been determined and plotted versus time. Also the correction for foreshortening has been taken into account.

Daily fluctuations, of the plage corrected areas, certainly greater than the errors, have been found. Also area fluctuations of shorter periods have been observed.

Type
Part IV: Cooperative Study of Solar Active Regions (CSSAR)
Information
Symposium - International Astronomical Union , Volume 35: Structure and Development of Solar Active Regions , 1968 , pp. 326 - 337
Copyright
Copyright © Reidel 1968 

References

Anichini, M., Godoli, G. (1967) Mem. Soc. astr. ital., 38, 259.Google Scholar
Ellison, M.A. (ed.) (1961) IGY Solar Activity maps D1 , Annals of the International Geophysical Year, 21, Pergamon Press, New York.Google Scholar
Godoli, G. (1961a) Osserv. Mem. Oss. astrofis. Arcetri, 73.Google Scholar
Godoli, G. (1961b) ibid., 75.Google Scholar
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Godoli, G., Monsignori Fossi, B.C. (1967a) Lincei, Mem., Serie VIII, 8, 85.Google Scholar
Godoli, G., Monsignori Fossi, B.C. (1967b) Solar Phys., 1, 148.Google Scholar