August 20-September 02, 1998

Fig. 1. An example of the longitudinal microwave chains revealed by the modified Nobeyama Radioheliograph images of August 24 and 25, 1998.

-- The large-scale microwave chains (mainly longitudinal) show that several active regions (ARs 8307, 8314, 8315, 8316 and perhaps also AR 8309) are united in a single complex in the north hemisphere..

-- Strong changes of the longitudinal microwave chains occurred after a large LDE and proton event of August 24, 1998 (~22 UT) (see the movie presented below).

 A movie showing development of the large-scale longitudinal microwave chains in the north hemisphere during August 20-September 02, 1998 as revealed by the modified Nobeyama Radioheliograph data.

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Last update: 2 April 1999