Abstract
Following previous order of magnitude estimates (Poletto, 1980), the possibility that hot downflowing motions in the solar transition region could be ascribed to spicular matter returning to the chromosphere after being heated by compression, is more thoroughly investigated. The equations describing the one-dimensional non stationary motion of the spicular plasma during the heating process are analytically solved, and the temporal profiles of temperature, density and velocity are given for a set of representative situations. The results are finally compared with available data.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Athay, R. G.: 1972, Radiation Transport in Spectral Lines, D. Reidel Publ. Co., Dordrecht, Holland.
Athay, R. G.: 1976, The Solar Chromosphere and Corona, D. Reidel Publ. Co., Dordrecht, Holland.
Athay, R. G., White, O. R., Lites, B. W., and Bruner, E. C.: 1980, Solar Phys. 66, 357.
Beckers, J. M.: 1972, Ann. Rev. Astron. Astrophys. 10, 73.
Bonnet, R. M.: 1978, Space Sci. Rev. 21, 379.
Brueckner, G. E.: 1980, Proceedings of the XVII IAU General Assembly, in press.
Brueckner, G. E., Bartoe, J.-D. F., and Van Hoosier, M. E.: 1977, Proc. November OSO-8 Workshop, University of Colorado, Boulder.
Bruner, E. C. and Lites, B. W.: 1979, Astrophys. J. 228, 322.
Donnelly, R. F. and Hall, L. A.: 1973, Solar Phys. 31, 411.
Gabriel, A. H.: 1976, Phil. Trans. Roy. Soc. London A281, 339.
Landau, L. D. and Lifshitz, E. M.: 1959, Fluid Mechanics, Pergamon Press, New York.
Mihalas, D.: 1970, Stellar Atmospheres, Freeman and Co.
Nicolas, K. R., Brueckner, G. E., Tousey, R., Tripp, D. A., White, O. R., and Athay, R. G.: 1977, Solar Phys. 55, 305.
Nicolas, K. R., Bartoe, J.-D. F., Brueckner, G. E., and Van Hoosier, M. E.: 1979, Astrophys. J. 233, 741.
Oster, L.: 1966, Astrophys. J. 143, 928.
Pneuman, G. W. and Kopp, R. A.: 1977, Astron. Astrophys. 55, 305.
Poletto, G.: 1980, Astrophys. J. Letters 240, L69.
Priest, E. R.: 1980, in F. Orral (ed.), Skylab Workshop on Active Regions, in press.
Seaton, M. J.: 1959, Monthly Notices Roy. Astron. Soc. 119, 81.
Seaton, M. J.: 1964, Planet and Space Sci. 12, 55.
Stanyukovich, K. P.: 1950, Unsteady Motion of Continuous Media, Pergamon Press, New York.
Tucker, W. H.: 1973, Astrophys. J. 186, 288.
Tucker, W. H. and Koren, M.: 1971, Astrophys. J. 168, 411.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Poletto, G. Mass motions in the transition region. Sol Phys 73, 233–256 (1981). https://doi.org/10.1007/BF00151680
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF00151680