2016/04/27 by L. L. Kitchatinov, L. Kitchatinov, A. Nepomnyashchikh +1 · 1 citation
Biochemistry, Genetics and Molecular Biology · Physics and Astronomy · #Astro and Planetary Science #Convection #Convection zone #Diamagnetism #Dynamo #Dynamo theory #Flux tube #Geomagnetism and Paleomagnetism Studies #Geometry #Geophysics #Magnetic field #Magnetic flux #Mechanics #Physics #Plasma #RADIUS #Rotation (mathematics) #Solar and Space Plasma Dynamics #Toroid #Toroidal and poloidal #astro-ph.SR
paper · pdf · doi:10.1016/j.asr.2016.04.014
14 one-column pages, 2 figures, to appear in AdSR
arxiv created 2016/04/27 · openalex publication_date 2016/04/29 · arxiv updated 2016/09/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Solar dynamo models require some mechanism for magnetic field concentration near the base of the convection zone in order to generate super-kilogauss toroidal fields with sufficiently large (~1024 Mx) magnetic flux. We consider the downward diamagnetic pumping near the base of the convection zone as a possible concentration mechanism and derive the pumping velocities with allowance for the effect of rotation. Transport velocities for poloidal and toroidal fields differ in rotating fluid. The toroidal field is transported downward along the radius only but the pumping velocity for the poloidal field has an equatorward meridional component also. Previous results for cases of slow and rapid rotation are reproduced and the diamagnetic pumping expressions adapted for use in dynamo models are presented.