Kinematic Modeling of Vortices in the Solar Photosphere

Details Kinematic Modeling of Vortices in the Solar Photosphere Kinematic Modeling of Vortices in the Solar Photosphere

Nov 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apj...489..960s&link_type=abstract

Astrophysical Journal v.489, p.960

Astronomy and Astrophysics

Astronomy

13

Diffusion, Hydrodynamics, Sun: Granulation, Sun: Photosphere

Scientific paper

The application of local correlation tracking to the proper motions of granules yields the horizontal velocity field at the solar surface. The divergence of the velocity reveals a pattern of sources and sinks. The vorticity is concentrated at sinks to form local swirls (with either sense of motion). A simple kinematic model of such a vortex, in which the radial inflow is balanced by an eddy viscosity, predicts that the vorticity should have a Gaussian profile. This prediction is confirmed by comparison with three sets of high-resolution observations, obtained from Spacelab 2 and from the Swedish Vacuum Solar Telescope on La Palma. Finally, we develop a more precise version of the model and provide an estimate of the eddy viscosity due to small-scale granulation.

Affiliated with

Also associated with

No associations

Rating

Kinematic Modeling of Vortices in the Solar Photosphere 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 Kinematic Modeling of Vortices in the Solar Photosphere, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Kinematic Modeling of Vortices in the Solar Photosphere will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1685541