Journal article Open Access

Evidence of 6 000-Year Periodicity in Reconstructed Sunspot Numbers

Xapsos, M. A.; Burke, E. A.


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{
  "DOI": "10.1007/s11207-009-9380-3", 
  "author": [
    {
      "family": "Xapsos, M. A."
    }, 
    {
      "family": "Burke, E. A."
    }
  ], 
  "issued": {
    "date-parts": [
      [
        2009, 
        5, 
        27
      ]
    ]
  }, 
  "abstract": "Reconstructed sunspot data are available that extend solar activity back to 11 360 years before the present. We have examined these data using Hurst analysis, a moving average filter, and Fourier analysis. All of the procedures indicate the presence of a long term (\u22486 000 year) cycle not previously reported. A number of shorter cycles formerly identified in the literature by using Fourier analysis, Bayes methods, and maximum entropy methods were also detected in the reconstructed sunspot data.", 
  "title": "Evidence of 6 000-Year Periodicity in Reconstructed Sunspot Numbers", 
  "type": "article-journal", 
  "id": "1232840"
}
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