Can the low-Activity sun Become Dimmer at Maximum?

Details Can the low-Activity sun Become Dimmer at Maximum? Can the low-Activity sun Become Dimmer at Maximum?

Mar 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001soph..199..201m&link_type=abstract

Solar Physics, v. 199, Issue 1, p. 201-209 (2001).

Physics

Scientific paper

After analysing the ratio of sunspot to facular areas along the cycle for solar cycles 12 to 20 we propose two possibilities. One indicates a non-linear behaviour for low-activity cycles and a closer-to-linear behaviour for high-activity cycles, the other one presents a non-linear behaviour for both low- and high-activity cycles and a closer-to-linear behaviour for moderate-activity cycles. Furthermore, we also find within the cycle that during low-activity cycles the Sun becomes brighter as their magnetic activity level increases while for high-activity cycles the opposite occurs, in agreement with previous studies of solar-type stars; another possibility, however, is that when evolving from minimum to maximum both the low- and high-activity Sun may become fainter while the moderate-activity Sun brightens.

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