Cycles and Universality in Sunspot Number Fluctuations

Details Cycles and Universality in Sunspot Number Fluctuations Cycles and Universality in Sunspot Number Fluctuations

Feb 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009apj...691.1583g&link_type=abstract

The Astrophysical Journal, Volume 691, Issue 2, pp. 1583-1586 (2009).

Astronomy and Astrophysics

Astronomy

Sunspots, Mhd, Methods: Data Analysis

Scientific paper

We analyze the famous Wolf's sunspot numbers. Surprisingly, we discovered that the distribution of the sunspot number fluctuations for both the ascending and descending phases is close to the universal nonparametric Bramwell-Holdsworth-Pinton (BHP) distribution. Since the BHP probability density function appears in several other physical phenomena, our result reveals a universal feature of the Wolf's sunspot numbers.

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