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

被引：8
|
作者：
Stanislavsky, A. A.
Weron, K.
机构：
[1] Inst Radio Astron, UA-61002 Kharkov, Ukraine
[2] Wroclaw Univ Technol, Inst Phys, PL-50370 Wroclaw, Poland
来源：
ASTROPHYSICS AND SPACE SCIENCE | 2007年 / 312卷 / 3-4期
关键词：
diffusion; sun : magnetic fields;
D O I：
10.1007/s10509-007-9702-6
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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.
引用
收藏
页码：343 / 347
页数：5
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