Properties of intra-cluster low-mass X-ray binaries in Fornax globular clusters

Aims. We present a study of the intra-cluster population of low-mass X-ray binaries (LMXB) residing in globular clusters (GC) in the central 1deg 2 of the Fornax galaxy cluster. Di ff erently from previous studies, which were restricted to the innermost regions of individual galaxies, this work is aimed at comparing the properties of the intra-cluster population of GC-LMXBs with those of the host galaxy. The this a of the VLT Survey Telescope We performed a cross-match between the optical and the X-ray catalogue in order to identify the LMXBs in GCs. We the GC-LMXBs host-galaxy and intra-cluster on their distance in of e ff ective ( R e GC-LMXBs also depends on GC colour, we Gaussian mixture model to into red and blue GCs. spectral properties of LMXBs and the host GC colour and therefore its metallicity. We discuss the possibilities of spatial biases due to uncertainties in the X-ray spectral response correction and due to contamination by background active galactic nuclei.