Magnetic accretion in high-accretion rate polars

The spectral components of polars -- strongly magnetic CVs -- are barely disentangled without sufficient spectral coverage. XMM-Newton plus NuSTAR can solve the riddle but the frequent low states of the brightest members prevented systematic studies of high-accretion rate polars (HARPs). We thus began TOO-like XMM-Newton observations of the brightest systems in their high states and propose to continue in AO13 with one further trigger. We will investigate the physics of the hard X-ray emitting shock, the heated accretion pole cap, the atmosphere of the white dwarf, the absorption in the shock and in the flow, the lines in the accretion flow and the reflection from the white dwarf by phase-resolved X-ray spectroscopy and high-speed OM-photometry.