Unveiling the Xray faint intermediate polars-source of the Galactic Ridge X-rays

The poorlyunderstood Galactic Ridge Xray Emission (GRXE) is an Xraybackground concentrated around the Galactic plane, primarily composed ofdifficult to resolve discrete sources. The most promising candidates for itsorigin above a few keV are the intermediate polars (IPs), a class of magneticcataclysmic variables (CVs), consisting of a strongly magnetic white dwarf and aRochelobe filling companion. Most of the 49 confirmed IPs are Xray bright (L_Xapprox 10^33 erg/s) but there may be a more numerous undiscovered population offainter (L_X approx 10^31 erg/s) IPs. We propose to observe 13 underluminous IPcandidates to confirm their nature as IPs, to search for the underluminous IPpopulation, detect spin period truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]