Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jbaa...98..282v&link_type=abstract
Journal of the British Astronomical Association, vol.98, no.6, p.282-286
Astronomy and Astrophysics
Astronomy
Sunspots, Zurich Sunspot Classification, Solar Activity Cycles
Scientific paper
The two methods currently used for monitoring solar activity in white light, the sunspot count and the active area count, provide consistent measures of the extent of solar activity but both ignore its quality. This paper addresses the question of whether the quality of sunspot activity changes during a cycle. Solar activity since 1979 is analysed in order to check whether any change in quality could be detected during this period. Furthermore it illustrates how observations of both the number and type of active areas can be used to monitor both the quality and the extent of solar activity reliably.
Tanti T.
Ventura F. J.
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