TY - JOUR
AU - Kyle Augustson
AU - Allan Brun
AU - Juri Toomre
AB - Rotational scaling relationships are examined for the degree of equipartition between magnetic and kinetic energies in stellar convection zones. These scaling relationships are approached from two paradigms, with first a glance at scaling relationship built on an energy-balance argument and second a look at a force-based scaling. The latter implies a transition between a nearly constant inertial scaling when in the asymptotic limit of minimal diffusion and magnetostrophy, whereas the former implies a weaker scaling with convective Rossby number. Both scaling relationships are then compared to a suite of 3D convective dynamo simulations with a wide variety of domain geometries, stratifications, and range of convective Rossby numbers.
BT - The Astrophysical Journal
DA - 2019-05
DO - 10.3847/1538-4357/ab14ea
N2 - Rotational scaling relationships are examined for the degree of equipartition between magnetic and kinetic energies in stellar convection zones. These scaling relationships are approached from two paradigms, with first a glance at scaling relationship built on an energy-balance argument and second a look at a force-based scaling. The latter implies a transition between a nearly constant inertial scaling when in the asymptotic limit of minimal diffusion and magnetostrophy, whereas the former implies a weaker scaling with convective Rossby number. Both scaling relationships are then compared to a suite of 3D convective dynamo simulations with a wide variety of domain geometries, stratifications, and range of convective Rossby numbers.
PY - 2019
EP - 83
T2 - The Astrophysical Journal
TI - Rossby and Magnetic Prandtl Number Scaling of Stellar Dynamos
UR - https://iopscience.iop.org/article/10.3847/1538-4357/ab14ea
VL - 876
ER -