Abstract
Simultaneous soft X-ray spectroscopic and broad band imaging observations of an active region have been analyzed together to determine the parameters which describe the coronal plasma. From the spectroscopic data, models of temperature-emission measure-elemental abundance have been constructed which provide acceptable statistical fits. By folding these possible models through the imaging analysis, models which are not self-consistent can be rejected. In this way, only the oxygen, neon and iron abundances of Pottasch (1967), combined with either an isothermal or exponential temperature-emission measure model are consistent with both sets of data. Contour maps of electron temperature and density for the active region have been constructed from the imaging data. The implications of the analysis to the determination of coronal abundances and to future satellite experiments are discussed.
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References
Acton, L. W., Catura, R. C., Meyerott, A. J., Wolfson, C. J., and Culhane, J. L.: 1972, Solar Phys. 26, 183.
Acton, L. W., Catura, R. C., and Joki, E. G.: 1975, Astrophys. J. 195, L93.
Batstone, R. M., Evans, K., Parkinson, J. H., and Pounds, K. A.: 1970, Solar Phys. 13, 389.
Blumenthal, G. R., Drake, G. W. F., and Tucker, W. H.: 1972, Astrophys. J. 172, 205.
Burek, A. J., Barrus, D. M., and Blake, R. L.: 1974, Astrophys. J. 191, 533.
Chambe, G.: 1971, Astron. Astrophys. 12, 210.
Dupree, A. K.: 1972, Astrophys. J. 178, 527.
Gabriel, A. H. and Jordan, C.: 1969, Monthly Notices Roy. Astron. Soc. 145, 241.
Liefeid, R. J., Hanzely, S., Kirby, T. B., and Mott, D.: 1970, Adv. X-Ray Analysis 13, 373.
Loulergue, M. and Nussbaumer, H.: 1973, Astron. Astrophys. 24, 209.
Malinovsky, M. and Heroux, L.: 1973, Astrophys. J. 181, 1009.
Parkinson, J. H.: 1973, Astron. Astrophys. 24, 215.
Parkinson, J. H.: 1975, Solar Phys. 42. 183.
Pottasch, S. R.: 1967, Bull. Astron. Inst. Neth. 19, 113.
Tucker, W. H. and Koren, M.: 1971, Astrophys. J. 168, 283; Erratum, 170, 621.
Vaiana, G. S., Krieger, A. S., and Timothy, A. F.: 1973, Solar Phys. 32, 81.
Vaiana, G. S., Krieger, A. S., Petrasso, R., Silk, J. K., and Timothy, A. F.: 1974, Proc. S.P.I.E. 44, 185.
Walker, A. B. C., Jr., Rugge, H. R., and Weiss, K.: 1974a, Astrophys. J. 188, 423.
Walker, A. B. C., Jr., Rugge, H. R., and Weiss, K.: 1974b, Astrophys. J. 192, 169.
Withbroe, G. L.: 1971, NBS Spec. Publ. No. 353, 127.
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Harvard College Observatory-Smithsonian Astrophysical Observatory.
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Davis, J.M., Gerassimenko, M., Krieger, A.S. et al. The interpretation of simultaneous soft X-ray spectroscopic and imaging observations of an active region. Sol Phys 45, 393–410 (1975). https://doi.org/10.1007/BF00158458
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DOI: https://doi.org/10.1007/BF00158458