Can equipartition fields produce the tilts of bipolar magnetic regions?
1993; IOP Publishing; Volume: 407; Linguagem: Inglês
10.1086/172521
ISSN1538-4357
Autores Tópico(s)Ionosphere and magnetosphere dynamics
Resumoview Abstract Citations (31) References (27) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Can Equipartition Fields Produce the Tilts of Bipolar Magnetic Regions? D'Silva, Sydney Abstract The effect of turbulence on the nonaxisymmetric flux rings of equipartition field strength in bipolar magnetic regions is studied on the basis of the small-scale momentum exchange mechanism and the giant cell drag combined with the Kelvin-Helmholtz drag mechanism. It is shown that the giant cell drag and small-scale momentum exchange mechanism can make equipartition flux loops emerge at low latitudes, in addition to making them exhibit the observed tilts. However, the sizes of the flux tubes have to be restricted to a couple of hundred kilometers. An ad hoc constraint on the footpoints of the flux loops is introduced by not letting them move in the phi direction, and it is found that equipartition fields of any size can be made to emerge at sunspot latitudes with the observed tilts by suitably adjusting the footpoint separations. Publication: The Astrophysical Journal Pub Date: April 1993 DOI: 10.1086/172521 Bibcode: 1993ApJ...407..385D Keywords: Solar Interior; Solar Magnetic Field; Solar Physics; Sunspots; Kelvin-Helmholtz Instability; Magnetic Flux; Momentum Transfer; Solar Rotation; Solar Physics; MAGNETOHYDRODYNAMICS: MHD; SUN: MAGNETIC FIELDS; SUN: ROTATION; SUN: SUNSPOTS full text sources ADS |
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