• Corpus ID: 55917411

Global-scale Magnetism (and Cycles) in Dynamo Simulations of Stellar Convection Zones

  title={Global-scale Magnetism (and Cycles) in Dynamo Simulations of Stellar Convection Zones},
  author={Benjamin P. Brown and Matthew Keith Morris Browning and Allan Sacha Brun and Mark S. Miesch and Juri Toomre Department of Astronomy and Center for Magnetic Self Organization in Laboratory and Astrophysical Plasmas and University of Wisconsin and Madison and Canadian Institute for Theoretical Astrophysics and Toronto and Canada. and DSMIRFUSAp and CEA-Saclay and Umr Aim and CEA-CNRS-Universit'e Paris and France. and High Altitude Observatory and Ncar and Boulder and Jila and Dept. AstrophysicalPlanetary Sciences and University of Colorado},
  journal={arXiv: Solar and Stellar Astrophysics},
Young solar-type stars rotate rapidly and are very magnetically active. The magnetic fields at their surfaces likely originate in their convective envelopes where convection and rotation can drive strong dynamo action. Here we explore simulations of global-scale stellar convection in rapidly rotating suns using the 3-D MHD anelastic spherical harmonic (ASH) code. The magnetic fields built in these dynamos are organized on global-scales into wreath-like structures that span the convection zone… 

Figures from this paper


Simulations of Core Convection in Rotating A-Type Stars: Magnetic Dynamo Action
Core convection and dynamo activity deep within rotating A-type stars of 2 M☉ are studied with three-dimensional nonlinear simulations. Our modeling considers the inner 30% by radius of such stars,
Simulations of Dynamo Action in Fully Convective Stars
We present three-dimensional nonlinear magnetohydrodynamic simulations of the interiors of fully convective M dwarfs. Our models consider 0.3 solar-mass stars using the Anelastic Spherical Harmonic