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Solar Physics

, Volume 156, Issue 1, pp 145–155 | Cite as

Short-term periodicities in sunspot areas during solar cycle 22

  • R. Oliver
  • J. L. Ballester
Article

Abstract

We have analyzed the daily record of sunspot areas during the current cycle 22 looking for the short-term periodicity of around 155 days which was present during some previous solar cycles. Two different methods have been used to compute the power spectra and the results indicate that such periodicity has been absent during the current solar cycle, which confirms the results obtained by other authors who used flares or flare-related data.

However, we have found that, during some intervals of time, a periodicity close to 86 days is statistically significant. A similar periodicity was found by Landscheit (1986) in energetic X-ray flares, between 1970 and 1982 (second and first half of solar cycles 20 and 21, respectively), and by Bai (1992b) for important solar flares during solar cycle 20.

Keywords

Flare Power Spectrum Solar Cycle Solar Flare Sunspot Area 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Bai, T.: 1987a,Astrophys. J. 318, L85.Google Scholar
  2. Bai, T.: 1987b,Astrophys. J. 314, 795.Google Scholar
  3. Bai, T.: 1988,Astrophys. J. 328, 860.Google Scholar
  4. Bai, T.: 1992a,Astrophys. J. 388, L69.Google Scholar
  5. Bai, T.: 1992b,Astrophys. J. 397, 584.Google Scholar
  6. Bai, T. and Cliver, E. W.: 1990,Astrophys. J. 363, 299.Google Scholar
  7. Bai, T. and Sturrock, P: 1987,Nature 327, 601.Google Scholar
  8. Bai, T. and Sturrock, P.: 1991,Nature 350, 141.Google Scholar
  9. Bai, T. and Sturrock, P: 1993,Astrophys. J. 409, 486.Google Scholar
  10. Bloomfield, P.: 1976,Fourier Analysis of Time Series: An Introduction, J. Wiley and Sons, New York.Google Scholar
  11. Bogart, R. S. and Bai, T.: 1985,Astrophys J. 299, L51.Google Scholar
  12. Burg, J. P.: 1967,Proc. 37th Ann. Int. Soc. Explor. Geophys., Oklahoma.Google Scholar
  13. Carbonell, M. and Ballester, J. L.: 1990,Astron. Astrophys. 238, 377.Google Scholar
  14. Carbonell, M. and Ballester, J. L.: 1991,Astron. Astrophys. 49, 295.Google Scholar
  15. Carbonell, M. and Ballester, J. L.: 1992,Astron. Astrophys. 255, 350.Google Scholar
  16. Chatfield, C.: 1984,The Analysis of Time Series, Chapman and Hall, London.Google Scholar
  17. De Jager, O. C.: 1987, Ph.D. Thesis, Potchefstroom University.Google Scholar
  18. Delache, Ph.: 1988,Adv. Space Res. 8(7), 119.Google Scholar
  19. Delache, Ph., Laclare, F., and Sadsoud, H.: 1985,Nature 317, 416.Google Scholar
  20. Delache, Ph., Laclare, F., and Sadsoud, H.: 1988, in J. Christensen-Dalsgaard and S. Frandsen (eds.),Advances in Helio- and Asteroseismology, Kluwer Academic Publishers, Dordrecht, Holland.Google Scholar
  21. Dröge, W., Gibbs, K., Grunsfeld, J. M., Meyer, P., Newport, B. J., Evenson, P., and Moses, D.: 1990,Astrophys. J. Supll. Ser. 73, 279.Google Scholar
  22. Ferraz-Mello, S.: 1981,Astron. J. 86, 619.Google Scholar
  23. Gabriel, S., Evans, R., and Feynman, J.: 1990,Solar Phys. 128, 415Google Scholar
  24. Horne, J. H. and Baliunas, S. L.: 1986,Astrophys. J. 302, 757.Google Scholar
  25. Ichimoto, K., Kubota, J., Suzuki, M., Tohmura, I., and Kurokawa, H.: 1985,Nature 316, 422.Google Scholar
  26. Kile, J. N. and Cliver, E. W.: 1991,Astrophys. J. 370, 442.Google Scholar
  27. Kiplinger, A. L., Dennis, B. R., and Orwig, L. E.: 1985,Bull. Amer. Am. Soc. 16, 891.Google Scholar
  28. Landscheit, T.: 1986,Solar Phys. 107, 195.Google Scholar
  29. Lean, J.: 1990,Astrophys. J. 363, 718.Google Scholar
  30. Lean, J. and Brueckner, G. E.: 1989,Astrophys. J. 337, 568.Google Scholar
  31. Lomb, N.: 1976,Astrophys. Space Sci. 39, 447.Google Scholar
  32. McIntosh, P. S., Thompson, R. J., and Willock, E. C.: 1992,Nature 360, 322.Google Scholar
  33. Özgüç, A. and Ätaç, T.: 1989,Solar Phys. 123, 357.Google Scholar
  34. Özgüç, A. and Ätaç, T.: 1994,Solar Phys. 150, 339.Google Scholar
  35. Press, W. H. and Teukolsky, S. A.: 1988,Computers in Phys. 2, 77.Google Scholar
  36. Press, W. H., Flannery, B. P., Teukolsky, S. A., and Vetterling, W. T.: 1986,Numerical Recipes, Cambridge University Press, CambridgeGoogle Scholar
  37. Ribes, E., Merlin, Ph., Ribes, J. C., and Barthalot, R.: 1989,Ann. Geophys. 7, 321.Google Scholar
  38. Rieger, E., Share, G. H., Forrest, D. J., Kanbach, G., Reppin, C., and Chupp, E. L.: 1984,Nature 312, 623.Google Scholar
  39. Scargle, J. D.: 1982,Astrophys. J. 263, 385.Google Scholar
  40. Silverman, S. M.: 1990,Nature 347, 365.Google Scholar
  41. Sturrock, P. and Bai, T.: 1992,Astrophys. J. 397, 337.Google Scholar
  42. Van den Boss, A.: 1971,IEEE Trans. Inf. Theory IT 17, 493.Google Scholar
  43. Wolff, C. L.: 1983,Astrophys. J. 264, 667.Google Scholar
  44. Wolff, C. L.: 1992,Solar Phys. 142, 187.Google Scholar

Copyright information

© Kluwer Academic Publishers 1995

Authors and Affiliations

  • R. Oliver
    • 1
  • J. L. Ballester
    • 1
  1. 1.Departament de FisicaUniversitat de les Illes BalearsPalma de MallorcaSpain

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