CAOSP abstracts, Volume: 25, year: 1995

Abstract: We present a number of statistical tests that speak in favour of an increased (both LDE-type and impulsive) flare activity in active regions (ARs) which are located inside or along the boundaries of the solar sectors with `reversed' magnetic polarity. Altogether 338 daily values of 32 BEARALERT regions have been analysed in terms of eight variables during the ascending phase of the 22nd solar cycle. The flare occurrence is found smallest inside the `old' sectors and peaks inside the `reversed' sectors and at the sectors' boundaries. Separate analyses of the data showing a lack of strong flare activity for a given day (the data subset dn, comprising 155 daily vectors), and the data pertinent to strong flare activity in a given day (the data subset df, representing 183 daily vectors) lead to the same results concerning the sectorial distribution of active regions.

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