The evolution of the Sun's poloidal field

Details The evolution of the Sun's poloidal field The evolution of the Sun's poloidal field

Nov 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...291..975d&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 291, no. 3, p. 975-989

Astronomy and Astrophysics

Astronomy

45

Flux Transfer Events, Photosphere, Solar Convection (Astronomy), Solar Magnetic Field, Stellar Models, Laplace Equation, Poloidal Flux, Solar Interior, Three Dimensional Models, Turbulent Diffusion, Velocity Distribution

Scientific paper

We present here a model to explain how the weak large-scale diffuse magnetic fields of the Sun migrate poleward in contrast to the sunspots which migrate equatorward with the progress of the solar cycle. We study the evolution of the Sun's poloidal field in the convection zone by assuming that it is produced by an equatorward-propagating dynamo wave at the base of the convection zone and is then subject to turbulent diffusion and a meridional circulation with a poleward surface flow. The magnetic fieldlines in the lower part of the convection zone first move towards the equator where they are pushed upward by the upwelling meridional flow there to form magnetic bubbles by joining with their opposite hemisphere counterparts. After reaching the surface, these bubbles drift to higher latitudes with the poleward meridional flow. Our model incorporates the three-dimensional vector character of the magnetic field, whereas the previous flux transport models treated the magnetic field as a scalar on the two-dimensional solar surface.

Affiliated with

Also associated with

No associations

Rating

The evolution of the Sun's poloidal field does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The evolution of the Sun's poloidal field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The evolution of the Sun's poloidal field will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1021125