Characterization of hard X-ray selected CV binaries

About 20% of hard Xray galactic sources detected in the INTEGRAL and Swiftsurveys are accreting white dwarf binaries (CVs). The majority harboursasynchronously rotating magnetic primaries, which are disputed to be thedominant galactic population of lowluminosity Xray sources. Optical followupsprovide good candidates but a secure identification resides in the Xrays. WithXMMNewton we could successfully prove or disprove the magnetic nature for 26sources. We here propose to continue our identification programme with 10 newcandidates with the ultimate goal to obtain a true census of the firstvolumelimited sample of hard Xray CVs, in view of the accurate distances to beprovided by Gaia. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]