084506

We propose 6 XMM observations of 25 ks each to explore the population of persistent LMXB among the faint hard X-ray sources discovered by INTEGRAL. Previous NuSTAR observations showed that diagnostics regularly used to exclude CV identifications may not be sufficient to conclusively identify hard X-ray sources. So comma we could expect a significant number of magnetic CVs among identified persistent LMXBs. We will investigate the true nature of six poorly-known sources comma and derive the main properties of these systems. These results will help to understand the LMXB population towards low fluxes comma by correcting their surface density and-or studying the detailed X-ray properties of these individual sources.