Scaling of solar wind epsilon and the AU, AL and AE indices

摘要: We apply the finite size scaling technique to quantify statistical properties of fluctuations in AU, AL and AE indices epsilon parameter that represents energy input from solar wind into magnetosphere. find exponents needed rescale probability density functions (PDF) are same within experimental error for all four quantities. This self-similarity persists time scales up ~4 hours ~2 AE. Fluctuations on shorter than these found have similar long-tailed (leptokurtic) PDF, consistent with an underlying turbulent process. These quantitative model-independent results place important constraints models coupled wind-magnetosphere system.