ANOMALOUS DIFFUSION OF MAGNETIC ELEMENTS ACROSS THE SOLAR SURFACE

被引：57

作者：

LAWRENCE, JK ^{[1
]}

SCHRIJVER, CJ ^{[1
]}

机构：

[1] UNIV UTRECHT,INST ASTRON,3508 TA UTRECHT,NETHERLANDS

来源：

ASTROPHYSICAL JOURNAL | 1993年 / 411卷 / 01期

关键词：

DIFFUSION; SUN; MAGNETIC FIELDS;

D O I：

10.1086/172841

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The random walks of concentrations of magnetic flux observed on the solar surface are found to give a natural, macroscopic realization of anomalous diffusion with fractal dimension D = 1.56 +/- 0.08 and exponent of anomalous diffusion theta = 0.25 +/- 0.40. The results exclude Euclidean, two-dimensional diffusion but are entirely consistent with results from percolation theory for diffusion on clusters at a density below the percolation threshold.

引用

页码：402 / 405

页数：4

共 22 条

[1] PERCOLATION THEORY AND THE GEOMETRY OF PHOTOSPHERIC MAGNETIC-FLUX CONCENTRATIONS [J].