Abstract
Hα, white-light and radio observations of a coronal disturbance on 1973 January 11 commencing at about 00h36m UT show that a piston-driven shock wave propagated outwards through the corona to heights of at least 9 R ⊙. Probably most of the expelled coronal gas originated in a coronal enhancement in the lower corona. Our estimate of the kinetic energy and the mass of the expelled gas is compatible with observations of piston-driven shock waves near the Earth. Shock-wave parameters are evaluated and a model of the disturbance outlined.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Billings, D. E.: 1966, A Guide to the Solar Corona, Academic Press, New York.
Brandt, J. C.: 1970, Introduction to the Solar Wind, W. H. Freeman and Co., San Francisco.
Brueckner, G. E.: 1972, Proceedings of Conference on Flare-Produced Shock Waves in the Corona, NCAR, Boulder, Colo., 11–14 September 1972.
Dryer, M.: 1973, Space Sci. Rev. 32, 491.
Dulk, G. A.: 1973, Solar Phys. (in press).
Hansen, R. T., Garcia, C. J., Grognard, R. J.-M., and Sheridan, K. V.: 1971, Proc. Astron. Soc. Australia 2, 57.
Hansen, R. T., Garcia, C. J., Hansen, Shirley F., and Loomis, H. G.: 1969, Solar Phys. 7, 417.
Hansen, R. T., Hansen, Shirley F., and Garcia, C. J.: 1972, Proceedings of Conference on Flare-Produced Shock Waves in the Corona, NCAR. Boulder, Colo., 11–14 September 1972.
Hirshberg, J., Bame, S. J., and Robbins, D. E.: 1972, Solar Phys. 23, 467.
Hundhausen, A. J.: 1972, Coronal Expansion and Solar Wind, Springer-Verlag, New York.
Leblanc, Y., Leroy, J. L., and Poulain, J.: 1970, Astron. Astrophys. 5, 391.
Newkirk, G.: 1961, Astrophys. J. 133, 983.
Riddle, A. C.: 1972, Proc. Astron. Soc. Australia 2, 98.
Smerd, S. F., Sheridan, K. V., and Stewart, R. T.: 1974, Astrophys. Letters (in press).
Stewart, R. T., Howard, R. A., Hansen, F., Gergely, T., and Kundu, M.: 1974, this, issue, p. 219 (Paper II).
Tidman, D. A. and Krall, N. A.: 1971, Shock waves in Collisionless Plasma, Wiley, New York.
Warwick, J. W.: 1957, Astrophys. J. 125, 811.
Wild, J. P., Sheridan, K. V., and Kai, K.: 1968, Nature 218, 536.
Author information
Authors and Affiliations
Additional information
On leave from Division of Radiophysics, CSIRO, Sydney, Australia.
Exchange visitor from the Dept. of Astro-Geophysics, Univ. of Colorado, Boulder, U.S.A.
Rights and permissions
About this article
Cite this article
Stewart, R.T., McCabe, M.K., Koomen, M.J. et al. Observations of coronal disturbances from 1 to 9 R ⊙ . Sol Phys 36, 203–217 (1974). https://doi.org/10.1007/BF00151561
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00151561