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New EXOSAT results from the intermediate polar V1223 SGR

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Abstract

We report new results obtained from the EXOSAT AO- 1 observation of the intermediate polar V1223 Sgr. The detection of a 12.4 minute period in the medium energy X-ray flux with an associated hardness ratio variation has been previously reported in Osborne et al. (1984a). Further work has revealed: a narrow dip at the phase zero in the folded medium energy light curve; ∼ 30% modulation in the low energy X-ray (3000 Lexan) flux; a count rate ratio from 3 filters which allow the presence of a bright low temperature blackbody component (kT = .05 –. 40 KeV); and a phase resolved ME spectrum which must have two or more components when the source is bright. New optical ephemerides show that the X-ray and optical pulses are in phase at an orbital phase of φ = 0.31.

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References

  • Van Amerongen (1984). private communication.

  • Bonnet-Bidaud, J.M., et al. (1982). A.A. 112, 355.

    Google Scholar 

  • Hassall, B., et al. (1981). M.N.R.A.S. 197, 275.

    Google Scholar 

  • Heise, J., et al. (1982). Ph.D. Thesis, Univ. of Utrecht.

  • de Korte, P., et al. (1981). Sp.Sci.Rev., 30, 495.

    Google Scholar 

  • Osborne, J.P., et al. (1984a). ESLAB preprint 84/93 presented at the Bologna conference ‘X-ray Astronomy’, June 1984.

  • Osborne, J.P., et al. (1984b). ESLAB preprint 84/92 presented at the Bologna conference ‘X-ray Astronomy’, June 1984.

  • Patterson, J., and Price, C.M., (1981). Ap.J.Lett., 243, L83.

    Google Scholar 

  • Patterson, J., et al. (1981). Ap.J., 245, 618.

    Google Scholar 

  • Pietsch, W., et al. (1984). Preprint, presented at Bologna conference ‘X-ray Astronomy’, June 1984.

  • Robinson, E., (1976). An.Rev.Astron.Astrophys. p.119.

  • Steiner, G., et al. (1980). I.A.U. Circ., 3529.

  • Steiner, G., et al. (1981). Ap.J.Lett., 249, L21.

    Google Scholar 

  • Turner, M., et al. (1981). Sp.Sci.Rev., 30, 513.

    Google Scholar 

  • Warner, B., (1983). p.155 in ‘Cataclysmic Variables and Related Objects’ eds: Livio, M., and Shaviv, G., Reidel.

  • Warner, B., and Cropper, M., (1984). Ap.J., 206, 261.

    Google Scholar 

  • Watson, M., et al. (1984). M.N.R.A.S. submitted.

  • White, N., and Marshall, F., (1981). Ap.J.Lett., 249, L25.

    Google Scholar 

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Authors and Affiliations

  1. EXOSAT Observatory, ESOC, Robert Bosch Str. 5, 61, Darmstadt, W. Germany

    J. P. Osborne

  2. MSSL, University College, London, UK

    R. Rosen & K. O. Mason

  3. TU Berlin & MPI Garching, W. Germany

    K. Beuermann

Authors
  1. J. P. Osborne
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  2. R. Rosen
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  3. K. O. Mason
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  4. K. Beuermann
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Affiliated to the Astrophysics Division, Space Science Dept., ESA

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Osborne, J.P., Rosen, R., Mason, K.O. et al. New EXOSAT results from the intermediate polar V1223 SGR. Space Sci Rev 40, 143–149 (1985). https://doi.org/10.1007/BF00212878

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  • DOI: https://doi.org/10.1007/BF00212878

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