Skip to main content
Log in

The structure of coronal magnetic loops

I: Equilibrium theory

  • Published:
Solar Physics Aims and scope Submit manuscript

Abstract

We present here a model, based on observations, for the magnetic-field equilibrium of a cool coronal loop. The pressure structure, taken from the Harvard/Skylab EUV data, is used to modify the usual force-free-field form in quasi-cylindrical symmetry. The resulting field, which has the same direction but different strength, is calculated and its variation displayed. Finally, localized interchange stability is evaluated and discussed, as the first step in a subsequent complete magnetohydrodynamic-stability analysis.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  • Brueckner, G. E. and Bartoe, J. D. F.: 1974, Solar Phys. 38, 133.

    Google Scholar 

  • Callebaut, D. K.: 1976, private communication.

  • Cheng, C. C. and Widing, K.: 1976, Astrophys. J. 201, 735.

    Google Scholar 

  • Davis, H. T.: 1962, Introduction to Nonlinear Differential and Integral Equations (Dover, New York), pp. 57–58.

    Google Scholar 

  • Foukal, P. V.: 1975, Solar Phys. 43, 327.

    Google Scholar 

  • Foukal, P. V.: 1976, Astrophys. J. 210, 575.

    Google Scholar 

  • Foukal, P. V., Huber, M. C. E., Noyes, R. W., Reeves, E. M., Schmahl, E. J., Timothy, J. G., Vernazza, J. E., and Withbroe, G. L.: 1974, Astrophys. J. (Letters) 193, L143.

    Google Scholar 

  • Goedbloed, J. P.: 1971, Physica 53, 535.

    Google Scholar 

  • Goedbloed, J. P. and Dagazian, R. Y.: 1971, Phys. Rev. A4, 1554.

    Google Scholar 

  • Goedbloed, J. P. and Hagebeuk, E. J.: 1972, Phys. Fluids 15, 1090.

    Google Scholar 

  • Jette, A. D. and Sreenivasan, S. R.: 1969, Phys. Fluids 12, 2544.

    Google Scholar 

  • Kahler, S. W., Krieger, A. S., and Vaiana, G. S.: 1975, Astrophys. J. (Letters) 199, L57.

    Google Scholar 

  • Landecker, P. B.: 1975, private communication.

  • Levine, R. H. and Altschuler, M. D.: 1974, Solar Phys. 36, 345.

    Google Scholar 

  • Levine, R. H. and Withbroe, G. L.: 1977, Solar Phys. 51, 83.

    Google Scholar 

  • Lundquist, S.: 1951, Arkiv. Fysik 2, 361.

    Google Scholar 

  • Mercier, C.: 1960, Nucl. Fusion 1, 47.

    Google Scholar 

  • Pallavicini, R., Serio, S., and Vaiana, G. S.: 1977, Solar Phys., to appear.

  • Poletto, G., Vaiana, G. S., Zombeck, M. V., Krieger, A. S., and Timothy, A. F.: 1975, Solar Phys. 44, 83.

    Google Scholar 

  • Rosenberg, H.: 1973, ‘Instabilities in the Solar Corona’, Thesis, University of Utrecht.

  • Suydam, B. R.: 1958, Proc. of the Second Internat. Conf. on the Peaceful Uses of Atomic Energy (United Nations, Geneva), vol. 31, p. 157.

    Google Scholar 

  • Van Hoven, G.: 1976, Solar Phys. 49, 95.

    Google Scholar 

  • Van Hoven, G., Chiuderi, C., and Giachetti, R.: 1977, Astrophys. J. 213, 869.

    Google Scholar 

  • Vorpahl, J. A.: 1975, private communication.

  • Vorpahl, J. A., Gibson, E. G., Landecker, P. B., McKenzie, D. L., and Underwood, J. H.: 1975, Solar Phys. 45, 199.

    Google Scholar 

  • Vorpahl, J. A., Tandberg-Hanssen, E., and Smith, J. B.: 1976, ‘Coronal Plasma Parameters in a Long-Duration X-Ray Event’, to appear in Astrophys. J.

  • Voslamber, D. and Callebaut, D. K.: 1962, Phys. Rev. 128, 2016.

    Google Scholar 

  • Ware, A. A.: 1964, Phys. Fluids 7, 2006.

    Google Scholar 

  • Wesson, J. A.: 1975, Proceedings of the 7th European Conference on Controlled Fusion and Plasma Physics (Ecole Polytech. Fed., Lausanne), pp. 102–118.

    Google Scholar 

  • Widing, K.: 1974, in S. R. Kane (ed.), ‘Solar Gamma-, X- and EUV Radiation’, IAU Symp. 68, 153.

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Chiuderi, C., Giachetti, R. & Van Hoven, G. The structure of coronal magnetic loops. Sol Phys 54, 107–122 (1977). https://doi.org/10.1007/BF00146427

Download citation

  • Received:

  • Revised:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00146427

Keywords

Navigation