On the Facular Area Surrounding Decaying Sunspots

Details On the Facular Area Surrounding Decaying Sunspots On the Facular Area Surrounding Decaying Sunspots

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005soph..226...37c&link_type=abstract

Solar Physics, Volume 226, Issue 1, pp.37-43

Physics

3

Scientific paper

The change in facular area around decaying sunspots is investigated. The data are from full-disk photometric images from CFDT1 (5 arc sec pixels) obtained at the Ca ii K-line λ = 393.4 nm. The 31 active regions are from a list previously used to study the decay rate of sunspots. We find a weak, marginally significant relation between spot decay rate and growth of the surrounding facular region (r2 = 0.1255). We conclude that, for this group of decaying sunspots, the growth or decay of the surrounding facular region was not clearly related to the decay rate of an active region’s sunspots.

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