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.
Hassall, B., et al. (1981). M.N.R.A.S. 197, 275.
Heise, J., et al. (1982). Ph.D. Thesis, Univ. of Utrecht.
de Korte, P., et al. (1981). Sp.Sci.Rev., 30, 495.
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.
Patterson, J., et al. (1981). Ap.J., 245, 618.
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.
Turner, M., et al. (1981). Sp.Sci.Rev., 30, 513.
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.
Watson, M., et al. (1984). M.N.R.A.S. submitted.
White, N., and Marshall, F., (1981). Ap.J.Lett., 249, L25.
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© 1985 D. Reidel Publishing Company
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Osborne, J.P., Rosen, R., Mason, K.O., Beuermann, K. (1985). New Exosat Results from the Intermediate Polar V1223 SGR. In: Peacock, A. (eds) X-Ray Astronomy in the Exosat Era. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-5448-9_18
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DOI: https://doi.org/10.1007/978-94-009-5448-9_18
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