Abstract
The evolution of azimuthal modulation of the solar wind is examined by numerical integration of the basic equations governing supersonic, super-Alfvénic, polytropic one fluid flow in the equatorial plane of the Sun with radial as well as azumuthal magnetic fields. The computations are started by introducing various sets of finite amplitude perturbations stationary with respect to the Sun. It is shown that for a properly chosen set of simultaneous perturbations of the radial velocity and temperature, quantitative agreement with the averaged observational results at 1 AU can be obtained, including the advance of the density modulation with respect to those of velocity and temperature. It is further shown that modulations at 1 AU depend on the relative azimuthal positions between the Sun and the Earth.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Barnes, A.: 1969, Astrophys. J. 155, 311.
Brandt, J. C., Wolff, C., and Cassinelli, J. P.: 1969, Astrophys. J. 156, 1117.
Burlaga, L. F. and Ogilvie, K. W.: 1970, Astrophys. J. 159, 659.
Burlaga, L. F., Ogilvie, K. W., Fairfield, D. H., and Montgomery, M. D.: 1971, Astrophys. J. 164, 137
Cuperman, S., Harten, A., and Dryer, M.: 1962, Astrophys. J. 177, 555.
Dryer, M.: 1970, Cosmic Electrodyn. 1, 348.
Gosling, J. T., Hundhausen, A. J., Pizzo, V., and Ashbridge, J.: 1972, J. Geophys. Res. 77, 5442.
Hartle, R. E. and Barnes, A.: 1970, J. Geophys. Res. 75, 6915.
Hartle, R. E. and Sturrock, P. A.: 1968, Astrophys. J. 151, 1155.
Hollweg, J. V.: 1973, J. Geophys. Res. (in press).
Hundhausen, A. J.: 1972, Coronal Expansion and Solar Wind, Springer-Verlag, New York.
Hundhausen, A. J.: 1973, J. Geophys. Res. (in press).
Hundhausen, A. J. and Gentry, R. A.: 1969, J. Geophys. Res. 74, 2908.
Keppenheuer, K. O.: 1953, in G. P. Kuiper (ed.), The Sun, Univ. Chicago Press, Chap. 6.
Korobeinikov, V. P.: 1969, Solar Phys. 7, 463.
Lee, T. S. and Balwanz, W. W.: 1968, Solar Phys. 4, 240.
Matsuda, T. and Sakurai, T.: 1972, Cosmic Electrodyn. 3, 97.
Parker, E. N.: 1963, Interplanetary Dynamical Processes, Interscience Publisher, New York.
Sakurai, T.: 1971, Cosmic Electrodyn. 1, 460.
Siscoe, G. L. and Finley, L. T.: 1972, J. Geophys. Res. 77, 35.
Weber, E. J. and Davis, L., 1967, Astrophys. J. 148, 217.
Weber, E. J. and Davis, L.: 1970, J. Geophys. Res. 75, 2419.
Whang, Y. C. and Chang, C. C.: 1965, J. Geophys. Res. 70, 4175.
Whang, Y. C., Liu, C. K., and Chang, C. C.: 1966, Astrophys. J. 145, 255.
Author information
Authors and Affiliations
Additional information
The National Center for Atmospheric Research is sponsored by the National Science Foundation.
Rights and permissions
About this article
Cite this article
Nakagawa, Y., Wellck, R.E. Numerical studies of azimuthal modulations of the solar wind with magnetic fields. Sol Phys 32, 257–270 (1973). https://doi.org/10.1007/BF00152741
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00152741