The Extreme Solar Activity during October-November 2003

Details The Extreme Solar Activity during October-November 2003 The Extreme Solar Activity during October-November 2003

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006japa...27..333h&link_type=abstract

Journal of Astrophysics and Astronomy, vol. 27, no.2 & 3 P.333-338

Astronomy and Astrophysics

Astrophysics

1

Sunspots, Rotation, Flare, Extreme Activity

Scientific paper

The positional measurements of sunspots from the Kodaikanal Observatory and Solar Geophysical data are used to study the association between occurrence of the abnormal activities of big sunspot groups that were observed during the period of October-November 2003 and occurrence of the flares. During the evolution of the sunspot groups, we have investigated the temporal variations in (i) areas; (ii) rotation rates; (iii) longitudinal extents; and (iv) number of small spots produced in a sunspot group. Among all these activity variations, we find that the spot groups that experience abnormal rotation rates during their evolutionary phases eventually trigger the flares.

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