Buoyant Magnetic Loops Generated by Global Convective Dynamo Action

• DOI: 10.1007/s11207-012-0221-4
• Publication Date: 2013-01-28T07:28:55Z
• Authors: Nicholas J. Nelson; Benjamin P. Brown; A. Sacha Brun; Mark S. Miesch; Juri Toomre
• Keywords: Solar dynamo

Our global 3D simulations of convection and dynamo action in a Sun-like star reveal that persistent wreaths strong magnetism can be built within the bulk convention zone. Here we examine characteristics buoyant magnetic structures are self-consistently created by turbulent convective motions simulation with solar stratification but rotating at three times current rate. These loops originate sections which flows amplify fields to much larger values than is possible through laminar processes. amplified portions rise layer combination buoyancy advection giant cells, forming loops. We measure statistical trends polarity, twist, tilt these Loops shown preferentially arise longitudinal patches somewhat reminiscent active longitudes Sun, although broader extent. show strength axisymmetric toroidal field not good predictor production rate for or amount flux produced.