Association Between the Chirality of a Filament and the Helicity of the Supporting Active Regions
摘要
We investigate the handedness in the solar magnetic structures like chromospheric filaments and photospheric active regions using observations obtained from GONG, KSO and SDO/HMI. At its initial stage near the east limb, we identified a right-bearing sense for the filament barbs and negative helicity in the supporting active region (AR) NOAA 11959. Subsequently, we observed an emergence of positive helicity in this AR and a change in the bearing sense of the associated filament. Following this emergence, the filament adhered to the hemispheric helicity rule, maintaining the helicity of the underlying AR throughout its disc passage and following to the conservation of helicity. Our conclusion is that the AR in the photosphere and the filament in the chromosphere are interconnected, exhibiting similar pattern of helicity for a long duration of their lifespans.