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On the age dependence of the asymmetry of penumbrae of sunspots

  • Solar Physics Letter
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Abstract

The age dependence of the recently described asymmetry of penumbrae of large stable sunspots was analyzed. Young sunspots showed shorter eastern penumbrae, which differed by a maximum of ± 10 % from their mean width. For older sunspots the western penumbrae became smaller than the mean penumbra reaching differences of 20 % for spots of two months age.

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References

  • Bumba, V., Suda, J.: 1984, Bull.Astron.Inst.Czechosl. 35, 28

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  • Collados, M.: 1986, Thesis, Universidad La Laguna

  • Collados, M., del Toro Iniesta, J.C., Vázquez, M.: 1987, Solar Phys. 112, 281

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  • Collados, M., del Toro Iniesta, J.C., Vázquez, M.: 1988, Astron. Astrophys. 195, 315

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Authors and Affiliations

  1. Instituto de Astrofisica de Canarias, E-38200, La Laguna, Spain

    M. Collados, J. C. del Toro Iniesta & M. Vázquez

  2. Kiepenheuer - Institut für Sonnenphysik, Schöneckstr. 6, D-7800, Freiburg, F.R.G.

    H. Wöhl

Authors
  1. M. Collados
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  2. J. C. del Toro Iniesta
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  3. M. Vázquez
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  4. H. Wöhl
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Additional information

Mitteilungen aus dem Kiepenheuer-Institut Nr. 293

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Collados, M., del Toro Iniesta, J.C., Vázquez, M. et al. On the age dependence of the asymmetry of penumbrae of sunspots. Sol Phys 117, 199–202 (1988). https://doi.org/10.1007/BF00148583

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  • DOI: https://doi.org/10.1007/BF00148583

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