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Coronal information from EUV disk spectral line intensities

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Abstract

Center of disk EUV line intensities from quiet and active regions are used for determining an analytical expression for the variation of temperature with height in the lower corona, including the corona-chromosphere transition region. This approach imposes two coronal temperature regimes in both quiet and active regions. In each case the lower temperature regime is a continuation of the transition region, reaching a maximum of about 1.4 million deg in the quiet and 1.7 million deg in the active region. In the quiet region the high temperature regime, assumed isothermal, has a temperature of about 2.4 million deg, and in the active region, about 4.2 million deg.

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References

  • Allen, J. W. and Dupree, A. K.: 1969, Astrophys. J. 155, 27.

    Google Scholar 

  • Athay, R. G.: 1966, Astrophys. J. 145, 784.

    Google Scholar 

  • Athay, R. G.: 1971, in C. J. Macris (ed.), Physics of the Solar Corona, D. Reidel Publ. Co., Dordrecht, Holland, p. 36.

    Google Scholar 

  • Athay, R. G., and Roberts, W. O.: 1955, Astrophys. J. 121, 231.

    Google Scholar 

  • Batstone, R. M., Evans, K., Parkinson, J. H., and Pounds, K. A.: 1970, Solar Phys. 13, 389.

    Google Scholar 

  • Billings, D. E.: 1959, Astrophys. J. 130, 961.

    Google Scholar 

  • Dollfus, A.: 1971, in C. J. Macris (ed.), Physics of the Solar Corona, D. Reidel Publ. Co., Dordrecht, Holland, p. 97.

    Google Scholar 

  • Dupree, A. K.: 1972, Astrophys. J. 178, 527.

    Google Scholar 

  • Dupree, A. K. and Goldberg, L.: 1967, Solar Phys. 1, 229.

    Google Scholar 

  • Dupree, A. K., Huber, M. C. E., Noyes, R. W., Parkinson, W. H., Reeves, E. M., and Withbroe, G. L.: 1973, Astrophys. J. 182, 321.

    Google Scholar 

  • Evans, K. and Pounds, K. A.: 1968, Astrophys. J. 152, 319.

    Google Scholar 

  • Jordan, C. and Wilson, R.: 1971, in C. J. Macris (ed.), Physics of the Solar Corona, D. Reidel Publ. Co., Dordrecht, Holland, p. 219.

    Google Scholar 

  • Kopp, R. A.: 1972, Solar Phys. 27, 373.

    Google Scholar 

  • Noyes, R. W.: 1971, in C. J. Macris (ed.), Physics of the Solar Corona, D. Reidel Publ. Co., Dordrecht, Holland, p. 192.

    Google Scholar 

  • Pottasch, S. R.: 1963, Astrophys. J. 137, 945.

    Google Scholar 

  • Pottasch, S. R.: 1964, Space Sci. Rev. 3, 816.

    Google Scholar 

  • Waldmeier, M.: 1956, Z. Astrophys. 39, 219.

    Google Scholar 

  • Walker, A. B. C., Jr.: 1972, Space Sci. Rev. 13, 672.

    Google Scholar 

  • Walker, A. B. C., Jr., Rugge, H. R., and Weiss, K.: 1974, Astrophys. J. 188, 423.

    Google Scholar 

  • Widing, K. G. and Sandlin, G. D.: 1968, Astrophys. J. 152, 545.

    Google Scholar 

  • Withbroe, G. L.: 1970a, Solar Phys. 11, 42.

    Google Scholar 

  • Withbroe, G. L.: 1970b, Solar Phys. 11, 208.

    Google Scholar 

  • Withbroe, G. L. and Gurman, J. B.: 1973, Astrophys. J. 183, 279.

    Google Scholar 

  • Wolff, R. S.: 1974, Solar Phys. 34, 163.

    Google Scholar 

  • Zirker, J. B.: 1971, in C. J. Macris (ed.), Physics of the Solar Corona, D. Reidel Publ. Co., Dordrecht, Holland, p. 140.

    Google Scholar 

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Authors and Affiliations

  1. Department of Astro-Geophysics, University of Colorado, 80302, Boulder, Colo., U.S.A.

    D. E. Billings & Manuel Alvarez

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  1. D. E. Billings
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  2. Manuel Alvarez
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Now at: Observatorio Astronomico Nacional, APTO, Postal 877, Ensenada, B. C., Mexico

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Billings, D.E., Alvarez, M. Coronal information from EUV disk spectral line intensities. Sol Phys 40, 23–38 (1975). https://doi.org/10.1007/BF00183149

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  • DOI: https://doi.org/10.1007/BF00183149

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