Subdiffusive transport in intergranular lanes on the Sun. The Leighton model revisited

Details Subdiffusive transport in intergranular lanes on the Sun. The Leighton model revisited Subdiffusive transport in intergranular lanes on the Sun. The Leighton model revisited

2011-11-14

arxiv.org/abs/1111.3234v1

Astrophys. Space Sci. 312, 343(2007)

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

7 pages

Scientific paper

10.1007/s10509-007-9702-6

In this paper we consider a random motion of magnetic bright points (MBP) associated with magnetic fields at the solar photosphere. The MBP transport in the short time range [0-20 minutes] has a subdiffusive character as the magnetic flux tends to accumulate at sinks of the flow field. Such a behavior can be rigorously described in the framework of a continuous time random walk leading to the fractional Fokker-Planck dynamics. This formalism, applied for the analysis of the solar subdiffusion of magnetic fields, generalizes the Leighton's model.

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