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On the Dynamics of Granulation in Active Regions and the Heating Problem

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Book cover Mechanisms of Chromospheric and Coronal Heating

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Abstract

Using spectrograms of high spatial resolution we investigated the functional interdependence between the convective intensity fluctuations at τ5000 = 1 and the line broadening of magnetically sensitive absorption lines in active and nonactive regions. We found an extra broadening in the intergranular regions. The variation of this broadening with height in the photosphere can be attributed to the variation of the magnetic filling factor as well as to enhanced nonthermal velocities.

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References

  • Komm, F., Mattig, W., and Nesis, A.: 1990, to be published in Astron. Astrophys.

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  • Narain, U., and Ulmschneider, P.: 1990, to appear in Space Science Reviews

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  • Nesis, A., Hanslmeier, A., Hammer, R., Komm, R., and Mattig, W.: 1990, in The Dynamic Sun, Proceedings of the 6th European Meeting on Solar Physics, ed. L. Dezsŏ

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Author information

Authors and Affiliations

  1. Kiepenheuer-Institut für Sonnenphysik, Schöneckstr. 6, D-7800, Freiburg, Germany

    A. Nesis, R. Hammer, R. Komm & W. Mattig

  2. Institut für Astronomie, Universitätsplatz 5, A-8010, Graz, Austria

    A. Hanslmeier

Authors
  1. A. Nesis
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  2. A. Hanslmeier
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  3. R. Hammer
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  4. R. Komm
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  5. W. Mattig
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Editor information

Editors and Affiliations

  1. Institut für Theoretische Astrophysik, Im Neuenheimer Feld 561, D-6900, Heidelberg, Fed. Rep. of Germany

    Peter Ulmschneider

  2. The Mathematical Institute North Haugh, University of St. Andrews, St. Andrews, KY16 9SS, Great Britain

    Eric R. Priest

  3. E. Fermi Institute and Dept. of Astronomy and Astrophysics, 5640 S Ellis Ave., 60637, Chicago, IL, USA

    Robert Rosner

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© 1991 Springer-Verlag Berlin Heidelberg

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Nesis, A., Hanslmeier, A., Hammer, R., Komm, R., Mattig, W. (1991). On the Dynamics of Granulation in Active Regions and the Heating Problem. In: Ulmschneider, P., Priest, E.R., Rosner, R. (eds) Mechanisms of Chromospheric and Coronal Heating. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-87455-0_8

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  • DOI: https://doi.org/10.1007/978-3-642-87455-0_8

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-87457-4

  • Online ISBN: 978-3-642-87455-0

  • eBook Packages: Springer Book Archive

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