Abstract
The results of two rocket flights of grazing incidence monochromators designed to measure solar line intensities in the wavelength region between 30 and 128 Å are compared. One of these flights sampled a very quiet Sun, that of November 3, 1965, and has been reported previously. The other acquired data during a more active, but non-flaring, interval on August 8, 1967. Improvements in the data reduction techniques have led to a refinement in the former data, and these improvements together with instrumental changes provided increased resolution in the results from the latter flight. The changes in line intensities observed in these two experiments follow a pattern which is in general qualitative agreement with theoretical ionization equilibrium calculations for the solar corona. An analysis of these and other observations of the CVI Lα line suggests that this line is particularly sensitive to local solar activity.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Austin, W. E., Purcell, J. D., Snider, C. B., Tousey, R. and Widing, K. G.: 1967, Space Research VII, Amsterdam, Vol. II, p. 1252.
Austin, W. E., Purcell, J. D., Tousey, R., and Widing, K. G.: 1966, Astrophys. J. 145, 373.
Blocker, N. K., Chambers, W. H., Fehlau, P. E., Fuller, J. C., Kunz, W. E., and Milkey, R. W.: 1970, Vela V and VI Solar X-Ray Atlas, Report LA-4454, Vol. II, University of Calif., Los Alamos.
Bourdeau, R. E., Aikin, A. C., and Donley, J. L.: 1966, J. Geophys. Res. 71, 727.
Caruso, A. J. and Neupert, W. M.: 1965, Appl. Opt. 4, 247.
Elton, R. C.: 1968, private communication.
Fawcett, B.J. and Morgan, F.: 1968, private communication.
Fawcett, B. J., Peacock, N. J., and Cowan, R. D.: 1968, J. Phys. B 1, 295.
Freeman, F. F. and Jones, B. B.: 1970, Solar Phys. 15, 288.
Henke, B. L., White, R., and Lundberg, B.: 1957, J. Appl. Phys. 28, 98.
Hinteregger, H. E.: 1961, in W. Liller (ed.), Space Astrophysics, McGraw-Hill Publ. Co., New York.
Hinteregger, H. E., Hall, L. A., and Schweizer, W.: 1964, Astrophys. J. 140, 319.
Jordan, C.: 1969, Monthly Notices Roy. Astron. Soc. 142, 501.
Leroux, J.: 1967, in E. F. Kaelble (ed.), Handbook of X Rays, McGraw-Hill Publ. Co., New York.
Malinovsky, M. and Heroux, L. J.: 1972, Astrophys. J., to be submitted.
Manson, J. E.: 1967, Astrophys. J. 147, 703. (Paper I)
Manson, J. E.: 1968, Astrophys. J. 153, L 191. (Paper II).
Morgan, F. J., Gabriel, A. H., and Barton, M. J.: 1968, J. Phys. E 1, 998. Solar Geophysical Data, 1964, 1966, 1967, World Data Center A, NOAA, Boulder, Colo., U.S.A.
Tousey, R.: 1964, Quart. J. Roy. Astron. Soc. 5, 123.
Tousey, R., Austin, W. E., Purcell, J. D., and Widing, K. G.: 1965, Ann. Astrophys. 28, 755.
Walker, A. B. C.: 1971, in Symposium on Laboratory and Astrophysical Plasmas, IAU, Utrecht.
Widing, K. G. and Sandlin, G. D.: 1968, Astrophys. J. 152, 545.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Manson, J.E. Measurements of the solar spectrum between 30 and 128Å. Sol Phys 27, 107–129 (1972). https://doi.org/10.1007/BF00151774
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF00151774