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.
Similar content being viewed by others
References
Brueckner, G. E. and Bartoe, J. D. F.: 1974, Solar Phys. 38, 133.
Callebaut, D. K.: 1976, private communication.
Cheng, C. C. and Widing, K.: 1976, Astrophys. J. 201, 735.
Davis, H. T.: 1962, Introduction to Nonlinear Differential and Integral Equations (Dover, New York), pp. 57–58.
Foukal, P. V.: 1975, Solar Phys. 43, 327.
Foukal, P. V.: 1976, Astrophys. J. 210, 575.
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.
Goedbloed, J. P.: 1971, Physica 53, 535.
Goedbloed, J. P. and Dagazian, R. Y.: 1971, Phys. Rev. A4, 1554.
Goedbloed, J. P. and Hagebeuk, E. J.: 1972, Phys. Fluids 15, 1090.
Jette, A. D. and Sreenivasan, S. R.: 1969, Phys. Fluids 12, 2544.
Kahler, S. W., Krieger, A. S., and Vaiana, G. S.: 1975, Astrophys. J. (Letters) 199, L57.
Landecker, P. B.: 1975, private communication.
Levine, R. H. and Altschuler, M. D.: 1974, Solar Phys. 36, 345.
Levine, R. H. and Withbroe, G. L.: 1977, Solar Phys. 51, 83.
Lundquist, S.: 1951, Arkiv. Fysik 2, 361.
Mercier, C.: 1960, Nucl. Fusion 1, 47.
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.
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.
Van Hoven, G.: 1976, Solar Phys. 49, 95.
Van Hoven, G., Chiuderi, C., and Giachetti, R.: 1977, Astrophys. J. 213, 869.
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.
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.
Ware, A. A.: 1964, Phys. Fluids 7, 2006.
Wesson, J. A.: 1975, Proceedings of the 7th European Conference on Controlled Fusion and Plasma Physics (Ecole Polytech. Fed., Lausanne), pp. 102–118.
Widing, K.: 1974, in S. R. Kane (ed.), ‘Solar Gamma-, X- and EUV Radiation’, IAU Symp. 68, 153.
Author information
Authors and Affiliations
Rights 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
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF00146427