2A0526-328: The white dwarf rotation period revealed |
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| Authors: | J Schrijver A C Brinkman H van der Woerd M G Watson A R King J van Paradijs M van der Klis |
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| Institution: | (1) Laboratory for Space Research, Utrecht, The Netherlands;(2) X-ray Astronomy Group, University of Leicester, UK;(3) Astronomy Department, University of Leicester, UK;(4) Astronomical Institute  Anton Pannekoek , Amsterdam, The Netherlands;(5) Space Science Department, Estec, Noordwijk, The Netherlands |
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| Abstract: | We report results from EXOSAT observations of the intermediate polar system 2A0526-328 (TV Col). The hard X-ray emission (2–8 keV) is modulated with a period of 1943 s, interpreted as the white-dwarf rotation period. Soft and hard X-ray emission show intensity minima, in phase with the orbital period of 0.2286 days; analysis of the hard X-ray spectra shows that these minima are caused by an extra low-energy absorption corresponding to a H column density of 4 × 1022 cm-2. |
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