Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980acasn..21..349c&link_type=abstract
Acta Astronomica Sinica, vol. 21, Dec. 1980, p. 349-353. In Chinese, with abstract in English.
Astronomy and Astrophysics
Astronomy
Radiative Lifetime, Solar Activity Effects, Solar Flares, Solar Magnetic Field, Data Acquisition, Long Term Effects, Solar Rotation, Spatial Distribution
Scientific paper
By tracing the positions of the regions of flare activity from January, 1970 to December, 1975, it is proposed that these regions exhibit a regional distribution of quasi-CA (complex of activity) on the surface. 95% active regions were distributed in 21 quasi-CA districts. The lifetime of quasi-CA is long and some may survive to over thirty rotations. After it has disappeared, and a quiet period of several (up to ten) more rotations has elapsed, some new regions can be activated in these districts. Therefore, it may provide an important parameter for the long-term prediction of solar flares.
Cao Tian-Jun
Xu Aiguo
Yin Shao Yu
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