Variabilities in the polar field and solar cycle due to irregular properties of bipolar magnetic regions
Pawan Kumar,
Bidya Binay Karak,
Anu Sreedevi
Abstract:Decay and dispersal of the tilted Bipolar Magnetic Regions (BMRs) on the solar surface are observed to produce the large-scale poloidal field, which acts as the seed for the toroidal field and, thus, the next sunspot cycle. However, various properties of BMR, namely, the tilt, time delay between successive emergences, location, and flux, all have irregular variations. Previous studies show that these variations can lead to changes in the polar field. In this study, we first demonstrate that our 3D kinematic dy… Show more
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