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X-Ray Spectra of Solar Active Regions

Published online by Cambridge University Press:  14 August 2015

John H. Parkinson
John H. Parkinson*
Affiliation:
Mullard Space Science Laboratory, Dept. of Physics and Astronomy, University College London, Holmbury St. Mary, Dorking, Surrey, England

Abstract

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The last few years have seen great progress in our understanding of X-ray spectra of solar active regions. This paper demonstrates both the usefulness and the limitations of the techniques, both scientific and instrumental, that have recently become available. Improvements in spectral resolution led to the discovery of weak satellite lines to helium-like ions; the quantitative theory for these lines is also discussed. The observed intensities of the Fe XVII lines are also investigated and found to be in agreement with calculations that allow for cascading processes.

Type
Part 2: Active Regions
Information
Symposium - International Astronomical Union , Volume 68: Solar X, Gamma, and EUV Radiation , 1975 , pp. 45 - 64
Copyright
Copyright © Reidel 1975 

References

Acton, L. W., Catura, R. C., Meyerott, A. J., Wolfson, C. J., and Culhane, J. L.: 1972, Solar Phys. 26, 183.CrossRefGoogle Scholar
Batstone, R. M.: 1970, Private communication.Google Scholar
Batstone, R. M., Evans, K., Parkinson, J. H., and Pounds, K. A.: 1970, Solar Phys. 13, 389.CrossRefGoogle Scholar
Beigman, I. L. and Urnov, A. M.: 1969, Optika Spectrosk. 27, 380.Google Scholar
Blake, R. L., Chubb, T. A., Friedman, H., and Unzicker, A. E.: 1965, Astrophys. J. 142, 1.CrossRefGoogle Scholar
Blumenthal, G. R., Drake, G. W. F., and Tucker, W. H.: 1972, Astrophys. J. 172, 205.CrossRefGoogle Scholar
Bonnelle, C., Senemaud, C., Senemaud, G., Chambe, G., Guionnet, M., Henoux, J. C., and Michard, R.: 1973, Solar Phys. 29, 341.CrossRefGoogle Scholar
Brabban, D. H.: 1973, Thesis, University of London.Google Scholar
Brabban, D. H., Glencross, W. M., and Herring, J. R. H.: 1971, New Techniques in Space Astronomy, p. 135.CrossRefGoogle Scholar
Chambe, G.: 1971, Astron. Astrophys. 12, 210.Google Scholar
Edlen, B. and Tyren, F.: 1939, Nature 143, 940.CrossRefGoogle Scholar
Evans, K. and Pounds, K. A.: 1968, Astrophys. J. 152, 319.CrossRefGoogle Scholar
Fritz, G., Kreplin, R. W., Meekins, J. F., Unzicker, A. E., and Friedman, H.: 1967, Astrophys. J. 148, L133.CrossRefGoogle Scholar
Froese, C.: 1967, Bull. Astron. Inst. Neth. 19, 86.Google Scholar
Gabriel, A. H.: 1972, Monthly Notices Roy. Astron. Soc. 160, 99.CrossRefGoogle Scholar
Gabriel, A. H. and Jordan, C.: 1969a, Nature 221, 947.CrossRefGoogle Scholar
Gabriel, A. H. and Jordan, C.: 1969b, Monthly Notices Roy. Astron. Soc. 145, 241.CrossRefGoogle Scholar
Gabriel, A. H. and Jordan, C.: 1972, Case Studies in Atomic Collision Physics II, North Holland, Amsterdam, p. 109.Google Scholar
Gabriel, A. H. and Jordan, C.: 1973, Astrophys. J. 186, 327.CrossRefGoogle Scholar
Garstang, R. H.: 1966, Publ. Astron. Soc. Pacific 78, 399.CrossRefGoogle Scholar
Garstang, R. H.: 1969, Publ. Astron. Soc. Pacific 81, 488.CrossRefGoogle Scholar
Hutcheon, R. J. and McWhirter, R. W. P.: 1973, J. Phys. B. 6, 2668.CrossRefGoogle Scholar
Jordan, C.: 1969, Monthly Notices Roy. Astron. Soc. 142, 501.CrossRefGoogle Scholar
Leigh, B. and Evans, K.: 1972, Private communication.Google Scholar
Loulergue, M. and Nussbaumer, H.: 1973, Astron. Astrophys. 24, 209.Google Scholar
Neupert, W. M.: 1971, Physics of the Solar Corona, Reidel, Holland, p. 237.Google Scholar
Parkinson, J. H.: 1971a, Nature Phys. Sci. 233, 44.CrossRefGoogle Scholar
Parkinson, J. H.: 1971b, Thesis, University of Leicester.Google Scholar
Parkinson, J. H.: 1972, Nature Phys. Sci. 236, 68.CrossRefGoogle Scholar
Parkinson, J. H.: 1973, Astron. Astrophys. 24, 215.Google Scholar
Parkinson, J. H. and Pounds, K. A.: 1971, Solar Phys. 17, 146.CrossRefGoogle Scholar
Pottasch, S. R.: 1964, Space Sci. Rev. 3, 816.CrossRefGoogle Scholar
Pottasch, S. R.: 1966, Bull. Astron. Soc. Neth. 18, 443.Google Scholar
Pottasch, S. R.: 1967, Bull. Astron. Soc. Neth. 19, 113.Google Scholar
Rugge, H. R. and Walker, A. B. C.: 1968, Space Res. VIII, North-Holland, Amsterdam, p. 439.Google Scholar
Summers, H. P.: 1973, Astrophys. J. 179, L45.CrossRefGoogle Scholar
Walker, A. B. C.: 1972, Space Sci. Rev. 13, 672.CrossRefGoogle Scholar
Walker, A. B. C.: 1975, This volume, p. 73.CrossRefGoogle Scholar
Walker, A. B. C. and Rugge, H. R.: 1971, Astrophys. J. 164, 181.CrossRefGoogle Scholar