Advertisement

Solar Physics

, Volume 159, Issue 1, pp 45–51 | Cite as

Artificial granules in 2-D solar models

  • A. S. Gadun
  • Yu. Yu. Vorob'yov
Article

Abstract

Two-dimensional, hydrodynamic, time-dependent models of solar granulation have been used to determine characteristics of artificial granules. It is found that the evolution of granules which subsequently fragment, respectively disappear, is fundamentally different. Dissolution of artificial granules is the basic process (48%–58%) in 2-D models. The number of small-scale and short-lived granules increases continuously toward the smaller scales. The main contributor to the total area are the granules with sizes about ∼900–1000 km. The mean lifetime of artificial granules is estimated to be 6–11 min.

Keywords

Basic Process Main Contributor Solar Model Solar Granulation Artificial Granule 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Brandt, P. N., Ferguson, S., Scharmer G. B., Shine, R. A., Tarbell, T. D., Title, A. M., and Topka, K.: 1991,Astron. Astrophys. 241, 219.Google Scholar
  2. Bray, R. J., Loughhead, R. E., and Durrant, C. J.: 1984,The Solar Granulation, 2nd ed., Cambridge University Press, Cambridge.Google Scholar
  3. Gadun, A. S.: 1986, Preprint ITF-86-106P, Institute of Theor. Phys. Kiev.Google Scholar
  4. Gadun, A. S.: 1995,Kinemat. i Fizika Nebes. Tel., in press.Google Scholar
  5. Gadun, A. S. and Vorob'yov, Yu. Yu.: 1995,Astron. Zh., in press.Google Scholar
  6. Kawaguchi, I.: 1980,Solar Phys. 65, 207.Google Scholar
  7. LaBonte, B. J., Simon, G. W., and Dunn, R. B.: 1975,Bull. Am. Astron. Soc. 7, 366.Google Scholar
  8. Lites, B. W. and Nordlund, Å., and Scharmer, G. B.: 1989, in R. J. Rutten and G. Severino (eds.),Solar and Stellar Granulation, Kluwer Academic Publishers, Dordrecht, Holland, p. 349.Google Scholar
  9. Nordlund, Å.: 1984, in S. Keil (ed.),Small-Scale Dynamical Processes in Stellar Atmospheres, Sunspot, Colorado, p. 181.Google Scholar
  10. Roudier, Th. and Muller, R.: 1987,Solar Phys. 107, 11.Google Scholar
  11. Title, A. M., Tarbell, T. D., Topka, K. P., Ferguson, S. H., Shine, R. A., and the SOUP Team: 1989,Astrophys. J. 336, 475.Google Scholar
  12. Wöhl, H. and Nordlund, Å.: 1985,Solar Phys. 97, 213.Google Scholar

Copyright information

© Kluwer Academic Publishers 1995

Authors and Affiliations

  • A. S. Gadun
    • 1
  • Yu. Yu. Vorob'yov
    • 2
  1. 1.Main Astronomical Observatory of Ukrainian NASKievUkraine
  2. 2.Department of Theoretical Nuclear PhysicsEngineering Physics InstituteMoscowRussia

Personalised recommendations