Abstract
Resonance polarization, which is created by the scattering of an anisotropic radiation field in regions of zero or weak magnetic fields, is strongly dependent on the frequency redistribution taking place during the scatterings. Here we discuss the frequency redistribution matrix relevant to resonance lines, concentrating on linear polarization. First we analyze in detail the redistribution matrix in a zero magnetic field given by the theory of Omont, Smith and Cooper (1972), revisited by Domke and Hubeny (1988). We explain that the linear polarization maxima which may appear in the wings of the Stokes Q profiles of strong resonances lines such as the Ca I 4227 Å line are coherent frequency redistribution effects. Various approximate forms of the frequency redistribution matrix are also examined. For resonance polarization in a weak magnetic field, we suggest a new expression for the redistribution matrix which can be used at all line frequencies, and is consistent with the condition that the Hanle effect acts only in the line core.
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References
Allen, C.W.: 1964, Astrophysical Quantities, University of London, The Athlone Press, London
Ayres, T.R.: 1977, Astrophys. J. 213, 296
Bommier, V.: 1996, Solar Physics (this volume)
Chandrasekhar, S.: 1950, Radiative Transfer, Oxford University Press, (Dover, New York, 1960)
Domke, H., and Hubeny, I.: 1988, Astrophys. J. 334, 527
Faurobert, M.: 1987, Astron. Astrophys. 178, 269
Faurobert, M.: 1988, Astron. Astrophys. 194, 268
Faurobert-Scholl, M.: 1991, Astron. Astrophys. 246, 469
Faurobert-Scholl, M.: 1992, Astron. Astrophys. 258, 521
Faurobert-Scholl, M.: 1994, Astron. Astrophys. 285, 655
Faurobert-Scholl, M.: 1996, Solar Physics (this volume)
Faurobert-Scholl, M., Feautrier, N., Machefert, F., Petrovay, K., and Spielfiedel, A.: 1995, Astron. Astrophys. 298, 289
Finn, G.D., 1967, Astrophys. J. 147, 1085
Fontenla, J.M., Avrett, E.H., and Loeser, R.: 1993, Astrophys. J. 406, 319
Frisch, H.: 1980, Astron. Astrophys. 83, 166
Hamilton, D.R.: 1947, Astrophys. J. 105, 424
Hummer, D.G.: 1962, Mon. Not. R. astr. Soc. 125, 21
Landi degl'Innocenti, M., and Landi degl'Innocenti, E.: 1988, Astron. Astrophys. 192, 374
Ivanov, V.V.: 1973, Transfer of Radiation in Spectral Lines, NBS Spec. Publ. 385, Washington Governement Printing Office
Jefferies, J.T.: 1968 Spectral Line Formation, Blaisdell Publishing Company, Waltham, Massachusetts
Jefferies, J.T., and White, O.: 1960, Astrophys. J. 132, 767
Kneer, F.: 1975, Astrophys. J. 200, 367
Nagendra, K.N.: 1994, Astrophys. J. 432, 274
Mihalas, D.: 1978, Stellar Atmospheres, Freeman and Company, San Francisco
Omont, A., Smith, E.W., and Cooper, J: 1972, Astrophys. J. 175, 185
Omont, A., Smith, E.W., and Cooper, J., 1973, Astrophys. J. 182, 283
Redman, R.O.: 1941, Mon. Not. R. astr. Soc. 101, 266
Rees, D., and Saliba, G.J.: 1982, Astron. Astrophys. 115, 1
Spielfiedel A., Feautrier N., Chambaud G., and Lévy B.: 1991, J. Phys. B: At. Mol. Opt. Phys. 24, 4711
Stenflo, J.: 1976, Astron. Astrophys. 46, 61
Stenflo, J.: 1978, Astron. Astrophys. 66, 241
Stenflo, J.: 1982, Solar Phys. 80, 209
Stenflo, J.: 1994, Solar Magnetic Fields, Kluwer Academic Publishers, Dordrecht
Stenflo, J.: 1996, Solar Physics (this volume)
Stenflo, J., Baur, T.G. and Elmore D.F.: 1980, Astron. Astrophys. 84, 60
Stenflo, J., and Stenholm, L.: Astron. Astrophys. 46, 69
Van de Hulst H.C.: 1980, Multiple Light Scattering, Tables, Formulas and Applications, Academic Press, New York
Zanstra, H.: 1941a, Mon. Not. R. astr. Soc. 101, 250
Zanstra, H.: 1941b, Mon. Not. R. astr. Soc. 101, 273
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Frisch, H. Partial frequency redistribution of polarized radiation. Sol Phys 164, 49–66 (1996). https://doi.org/10.1007/BF00146622
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DOI: https://doi.org/10.1007/BF00146622