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Calculation of coronal line intensities for boron-like ions

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Abstract

New atomic data (Saha and Trefftz, 1982a) have been used to calculate line intensities of S xii for the physical conditions found in the solar corona. They are compared with similar calculations for S ix (Saha and Trefftz, 1982b) and with published work. For the density sensitive intensity ratio I 227/I2218 the new values give the observed ratio (Malinovski and Heroux, 1973) for an electron density of logN e = 8.5 which is more likely than the density deduced from the values of Flower and Nussbaumer (1975), logN e ≲ 7.

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Author notes

  1. H. P. Saha

    Present address: Computer Science Department, Vanderbilt University, Station B, Box 1679, 37235, Nashville, TN, U.S.A.

Authors and Affiliations

  1. Max-Planck-Institut für Physik und Astrophysik, Institut für Astrophysik, Karl-Schwarzschild-Str. 1, D-8046, Garching b. München, F.R.G.

    H. P. Saha & E. Trefftz

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  1. H. P. Saha
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  2. E. Trefftz
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Dedicated to Professor Reimar Lüst on the occasion of his 60th birthday.

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Saha, H.P., Trefftz, E. Calculation of coronal line intensities for boron-like ions. Sol Phys 87, 233–242 (1983). https://doi.org/10.1007/BF00224836

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  • DOI: https://doi.org/10.1007/BF00224836

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