XMM-Newton Proposal 03065501

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White Dwarf Binaries, Neutron Star Binaries, Cataclysmic Variables, Ulxs, Black Holes, 1Rxsj062518.2+7, Xmm-Newton Proposal 03065501

Scientific paper

We propose to observe 1RXSJ062518.2+733433, a newly discovered intermediate polar. It is one out of only 5 known IPs showing a distinct soft X-ray component in addition to the normal hard bremsstrahlung. With the high signal-to-noise XMM X-ray data and simultaneous photometry in the near UV we will determine the spin-period of the white dwarf and the positions of the accretion regions on it. We want to resolve the accretion geometry and get information on the mechanisms of interaction between magnetic field and accreted matter and of energy-release. In this object the soft X-rays are only partially absorbed, so the structure of the accretion curtain can be analysed via the time-dependent absorption in both, the hard and soft X-rays -- tracers of material in completely different states.

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