Analysis of BMR tilt from AutoTAB catalog: Hinting towards the thin flux tube model?

• DOI: 10.48550/arxiv.2403.09229
• Publication Date: 2024-03-14
• Authors: Anu Sreedevi; Bibhuti Kumar Jha; Bidya Binay Karak; Dipankar Banerjee
• Keywords: Flux tube

One of the intriguing mechanisms Sun is formation bipolar magnetic regions (BMRs) in solar convection zone which are observed as concentrated fields opposite polarity on photosphere. These BMRs tilted with respect to equatorial line, statistically increases latitude. The thin flux tube model, employing rise magnetically buoyant loops and their twist by Coriolis force, a popular paradigm for explaining BMRs. In this study, we assess validity model analyzing tracked BMR data obtained through Automatic Tracking Algorithm (AutoTAB). Our observations reveal that exhibit expected collective behaviors. We find separation over normalized lifetime, supporting assumption rising from CZ. Moreover, observe an increasing trend tilt BMR, suggesting tubes associated lower primarily influenced drag force while higher regions, buoyancy dominates. Furthermore, Joy's law dependence emerging first detection, indicating at least portion can be attributed force. Notably, amount fluctuations measurement compared stronger more susceptible turbulent convection.