DETERMINATION OF THE ORIENTATION OF THE ACCRETION COLUMNS IN MAGNETIC CATACLYSMIC VARIABLES
DOI:
https://doi.org/10.18524/1810-4215.1993.6.104671Ключові слова:
Stars, Binaries, Magnetic, Accretion Columns, Individual, AM Her, BF Eri, MR SerАнотація
Methods for the determination of the orientation of accretion columns in magnetic cataclysmic variables based on the observations of the circular and linear polarization, X-Ray flux and profiles of emission lines are discussed. The non-uniformity of the density distribution through cross-section of the accretion columns leads to significant changes in the resulting spectra in two polarizational modes as compared with the ’homogeneous plasma slab’ model. Simplified expressions for the circular polarization provides an additional relation between the inclination i and the magnetic latitude b. Similar relations ma e established from the X-Ray and spectral observations. However, by interchanging the values of i and b, one will obtain the same phase relationship. The only direct method obtain the true values for i and b is based on polarization position angle changes. Real columns are non-stationary and not axisymmetric, which significantly affect observe characteristics. Observations of polars show long-term orientation changes of the accretion column with respect to the binary system. However, observations to date do not allow one to distinguish between the ’swinging’ and ’idling’ dipole models.
Посилання
Andronov I.L: 1984a, Astrofizika 20, 165.
Andronov l.L: 1984b, in: Preprint Ukr.Res.lnst.Sci.Tech.lnlorm. (UkrNIlNTl) No 1984, p.6
Andronov I.L: 1986a, Astron.Zhurn.(Soviet Astron.) 63, 274.
Andronov l.L: 1986b, AstronZhurn. 63, 508.
Andronov I.L: 1987a, AstronZhurn. 63, 97.
Andronov I.L: 1987b. AstrophysSpace Sci. £31, 557.
Andronov LL: 1987c, Astronomische Nachrichten, 308, 229.
Andronov LL: 1990, Astrofizika 32, 117.
Andronov LL: 1992, AstronAstrophys.Transact. 1, 107
Andronov I.L: Shakun L.I: 1990, Astrophys.Space Sci. 169, 237
Aslanov A.A., Kolosov D.E., Lipunova N.A., Khruzina T.S., Cherepashchuk A.M.: 1989, Catalogue of the Close Binary Stars at the late evolutionary Stages (in Russian), Moscow, 240 pp.
Bailey J., Axon D.J: 1981, MNRAS., 124, 187.
Bailey J., Hough J.H., Axon D.J.: 1980, Nature 285, 306
Basko M., Sunyaev R.A.:1973, Astrophys Space Sci. 23, 117.
Bianchini A.: 1990, Astron J. 99, 1941.
Brainerd J.J., Lamb 0.0.: 1985, in: ’Cataclysmic Variables and Low-Mass X-Ray Binaries', eds. D.Q.Lamb, J.Patterson.- Reidel, Dordrecht e.a., p. 247.
Burenkov-A.N., Voykhanskaya N.F.: 1980, Astron Zhurn. 57, 65.
Campbell C.G.: 1983. MNRAS. 205, 1031.
Canalle J.B.G., Opher R.: 1991, Astron Astrophys, 25 1, 474.
Chanmugam G, Frank J., 1987, Astrophys J. 329, 746.
Chanmugam G, Wagner R.L, 1977, Astrophys J., 213, L13.
Chiapetti L, Tanzi E.G., Treves A.: 1980, Space Sci. Rev. 27, 3.
Cowley A.P., Crampton D.: 1977, Astrophys.]. 212, L121
Cropper M.:1991, Space Sci. Revs. 54, 195
Dolginov A.Z., Gnedin Yu.N., Silantjev N.A.: 1979, The Penetration and the Polarization of the emission in the cosmical Media(in Russian), Moscow.
Efimov Yu.S, Shakhovskoy N.M.: 1981, lzv.Krimskoj Astrofiz. Obs. 64, 55
Efimov Yu.S, Shakhovskoy N.M.: 1982, lzv.Krimskoj Astrofiz. Obs.65, 143.
Gnedin Yu. N, Pavlov G. G. : 1975, Pis'ma Astron. Zhurn. 1, 34.
Gnedin Yu.N, Sunyaev R.A, 1973, AstronAstrophys. §_6_, 379.
Heam D.R., Richardson J.A: 1977, Astrophys J. 213, L115.
Hudec R., Meinunger L: 1976, Inf.BuIl.Var.Stars 1184.
King A.R., Lasota J.P: 1984. Astron Astrophys. 140, L16.
Kruszewski A. :1978, in: Nonstationary Evdlution of Close Binaries, ed. A.Zytkow, Warszawa, p55.
Krzeminski W., Serkowski K.: 1977, Astrophys J., 216, L45.
Lamb D.Q. :1985, in: 'Cataclysmic Variables and Low-Mass X-Ray Binaries', eds. D.Q.Lamb, J.Patterson.-D.Reidel, Dordrecht e.a., p. 17
Langer S.H., Chanmugam G., Shaviv G.:1982, Astrophys.], 25_8,289.
Liebert J., Stockman H.S., 1985, in: 'Cataclysmic Variables and Low-Mass X-Ray Binaries; eds. D.Q.Lamb, J.Patterson.-Reidel, Dordrecht e.a., p. 151.
Liebert J., Stockman H.S., Williams R.E., Tapia S., Green R.F., Rautenkranz D., Ferguson D.H., Szkody P., 1982, Astrophys.]. 256, 594.
Meggitt S.M.A., Wickramasinghe D.T.: 1982, MNRAS, 118, 71.
Panek R.J.: 1980, Astrophys J, 241, 1077.
Patterson J., Beuermann K., Lamb D.Q., Fabbiano G., Raymond J.C., Swank J., White N.E.: 1984, Astrophys J., 279, 785.
Pavlov G.G., Mitrofanov LG., Shibanov Yu.A, 1980, Astrophys. Space Sci. 73, 63.
Piirola V., Vilhu O., Kyrolainen J., Shakhovskoj N., Efimov Yu.:1985, ESA SP-236, p245 (Proc.ESA Workshop: Recent Results onCataclysmic Variables, Bamberg, April 17-19, 1985). 7
Priedhorsky W., Krzeminski W.: 1978, Astrophys J., 219, 597.
Schmidt G.D, Stockman H.S., Margon B.: 1981, Astrophys. J., 243, L151.
Schneider D.P., Young P.: 1980, Astrophys. J., 240, 871.
Shakhovskoy N.M, Kolesnikov S.V., Andronov I.L.: 1992, in: 'Magnetism in Stars', St. Petersburg, p. 158.
Stockman H.S.: 1977, Astrophyt.J., 218, L57.
Stockman H.S., Lubenow A.P.: 1987, Astrophys.Space Sci. 131, 607
Tapia S.: 1977, Astrophys. J., 212, L125
Voykhanskaya N.F.: 1989. Preprint Spec Astroph. Obs. USSR, No.43
Voykhanskaya N.F., Mitrofanov L.G.: 1980. Pis’ma Astron Zhum. (Soviet Astronomy Lott). 6, 159.
Wang Y.M., Frank J.: 1981. Astron. Astrophys. 93, 255
Wickramasinghe D.T., Bailey J., Meggitt M.A., Ferrario L., Hough J., Tuohy I.R.: 1991, MNRAS, 251, 28
Wu K., Chanmugam G.: 1988. Astrophys. J.,331, 861.
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