Solar Physics

, Volume 13, Issue 1, pp 198–212 | Cite as

Solar soft X-ray flare spectra from OSO-4

  • J. F. Meekins
  • G. A. Doschek
  • H. Friedman
  • T. A. Chubb
  • R. W. Kreplin


Solar flare spectral data, covering the wavelength range 0.7–8.5 Å, are derived from the NRL Bragg crystal spectrometers aboard OSO-4. A detailed analysis of the soft X-ray spectra for the 3b flare of 16 November 1967 (2140 UT) is presented, and it is found that electron temperatures derived from continua and emission lines are compatible with a two or more component plasma, differing in temperature by 6–10 × 106K.


Flare Detailed Analysis Spectral Data Wavelength Range Emission Line 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Acton, L. W.: 1964, Ph.D. Thesis, University of Colorado, Boulder, Colo., U.S.A.Google Scholar
  2. Alfvén, H. and Carlqvist, P.: 1967,Solar Phys. 1, 220.Google Scholar
  3. Allen, C. W.: 1963,Astrophysical Quantities, Oxford University Press, Inc., New York.Google Scholar
  4. Bely, O. and Faucher, P.: 1969,Astron. Astrophys. 1, 37.Google Scholar
  5. Blake, R. L.: 1968a, Private communication.Google Scholar
  6. Blake, R. L.: 1968b, Ph.D. Thesis, University of Colorado, Boulder, Colo., U.S.A.Google Scholar
  7. Cohen, L., Feldman, V., Schwartz, M., and Underwood, J. M.: 1968,J. Opt. Soc. Amer. 58, 843.Google Scholar
  8. Culhane, J. L. and Phillips, K. J. H.: 1969,Astrophys. J. (in press).Google Scholar
  9. Flamberg, H.: 1942,Arkiv. Mat. Astron. Fys. 28A, No. 18.Google Scholar
  10. Gabriel, A. H. and Jordan, C.: 1969a,Nature 221, 947.Google Scholar
  11. Gabriel, A. H. and Jordan, C.: 1969b,Monthly Notices Roy. Astron. Soc. 145, 241.Google Scholar
  12. Garcia, J. D. and Mack, J. E.: 1965,J. Opt. Soc. Amer. 55, 654.Google Scholar
  13. Griem, H. R.: 1969a,Astrophys. J. (Letters) 156, L103.Google Scholar
  14. Griem, H. R.: 1969b, Orbiting Solar Observatory Workshops, University of Colorado, Boulder, Colo., U.S.A., August 4–15, 1969.Google Scholar
  15. Heitier, W.: 1954,The Quantum Theory of Radiation, Oxford University Press, Inc., London.Google Scholar
  16. Horan, D. M.: 1969, Private communication.Google Scholar
  17. House, L. L.: 1969,Astrophys. J. Suppl. 18, No. 155, 21.Google Scholar
  18. Jordan, C.: 1969,Monthly Notices Roy. Astron. Soc. 142, 501.Google Scholar
  19. Meekins, J. F., Kreplin, R. W., Chubb, T. A., and Friedman, H.: 1968,Science 162, 891.Google Scholar
  20. Neupert, W. M., Gates, W., Schwartz, M., and Young, R.: 1967,Astrophys. J. (Letters) 149, L79.Google Scholar
  21. Seaton, M. J.: 1959,Monthly Notices Roy. Astron. Soc. 119, 81.Google Scholar
  22. Solar-Geophysical Data: 1968, Environmental Science Services Administration, U.S. Department of Commerce IER-FB-285.Google Scholar
  23. Teske, R. G. and Thomas, R. J.: 1969,Solar Phys. 8, 348.Google Scholar
  24. Tucker, W. H. and Gould, R. J.: 1966,Astrophys. J. 144, 244.Google Scholar
  25. Van Regemorter, M. H.: 1962,Astrophys. J. 136, 906.Google Scholar
  26. Zirin, H.: 1966,The Solar Atmosphere, Blaisdell Publishing Co., Waltham, Mass.Google Scholar

Copyright information

© D. Reidel Publishing Company 1970

Authors and Affiliations

  • J. F. Meekins
    • 1
  • G. A. Doschek
    • 1
  • H. Friedman
    • 1
  • T. A. Chubb
    • 1
  • R. W. Kreplin
    • 1
  1. 1.E. O. Hulburt Center for Space Research, Naval Research LaboratoryWashington, D.C.U.S.A.

Personalised recommendations