Abstract
The active region McMath 16051 showed during 2–7 June, 1979 a complex multipolar magnetic configuration, in which separate bipolar systems interacted. The period of high flare activity of 3–5 June was characterized by a rapid change in magnetic flux imbalance with the rate of 1.65 × 109 Wb s−1, while the period of low flare activity was typified by a synchronous decrease of the N- and S-polarity fluxes, with balance between them remaining unchanged. The high flare activity period exhibited the following structural features of the photosphere in the sunspot group: thin, thread-like bright bridges in sunspot kernels and complex dynamic penumbral structure, with superimposition of two systems of fibrils.
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Golovko, A.A., Kotrč, P. On some peculiarities in the evolution of the McMath 16051 flare active region on 2–7 June, 1979. Sol Phys 142, 67–86 (1992). https://doi.org/10.1007/BF00156634
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DOI: https://doi.org/10.1007/BF00156634