𝔖 Bobbio Scriptorium
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‘Bartels' active longitudes’, sector boundaries and flare activity

✍ Scribed by V. Bumba; V. N. Obridko

Publisher
Springer
Year
1969
Tongue
English
Weight
397 KB
Volume
6
Category
Article
ISSN
0038-0938

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✦ Synopsis

The flare activity and especially the proton-flare activity is concentrated in the zones of 'Bartels' active longitudes' and in the neighbourhood closest to the sector boundaries of the interplanetary magnetic field. This concentration seems to be greater if the importance of the event increases.

* On leave from the Institute of Terrestrial Magnetism, Ionosphere and Radiowave Propagation, Academy of Sciences, U.S.S.R.

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A superposed epoch analysis of [1964][1965][1966][1967][1968][1969][1970] solar flares shows a marked increase in flare occurrence within a day (13 ~ of longitude) of (-- § solar sector boundaries as well as a local minimum in flare occurrence near (+ --)sector boundaries. This preference for (--+)b