Fractal Brownian surface and distribution of longitudinal magnetic fields in two solar active regions

Details Fractal Brownian surface and distribution of longitudinal magnetic fields in two solar active regions Fractal Brownian surface and distribution of longitudinal magnetic fields in two solar active regions

Mar 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995soph..157..199h&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 157, no. 1-2, p. 199-212

Physics

Brownian Movements, Fractals, Solar Activity, Solar Magnetic Field, Solar Physics, Sun, Mathematical Models, Photosphere, Surface Diffusion, Surface Geometry

Scientific paper

The distribution of photospheric longitudinal magnetic fields in a solar active region can be considered to be a natural surface in a mathematical sense. Just as with landscapes on the Earth, the surface may be a fractal Brownian surface (FBS). A method suggested in the paper can manifest whether the surface is an FBS or not. The method has been applied to the longitudinal magnetic fields in AR 5988 on 24 Mar. 1990 and AR 6233 on 30 Aug. 1990, in which the observational characteristics are quite different. The testing results indicate that the distributions of longitudinal magnetic field in both regions are not in agreement with the FBS model.

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