| Name: Chitradeep Saha Affiliation: Center of Excellence in Space Sciences India Conference ID: ASI2023_753 Title : Buoyancy driven active region formation in a kinematic three dimensional solar dynamo model Authors and Co-Authors : Chitradeep Saha, Dibyendu Nandy Abstract Type : Poster Abstract Category : Sun and the Solar System Abstract : By introducing a magnetic field-strength dependent three-dimensional helical up-flow we model the emergence of bipolar magnetic regions (BMRs) within a kinematic solar dynamo framework; using PLUTO numerical architecture. We introduce time-varying localized velocity perturbations and make the toroidal component of the magnetic field emerge radially outward in the form of flux ropes from deep down the solar convection zone, leading to the eruption of BMRs at the surface. We calibrate the perturbing terms in order to conform with Hale's polarity law and Joy's law of mean tilt angle distribution. |