摘要：PMN J1603–4904 is a likely member of the rare class ofγ-ray emitting young radio galaxies. Only one other source, PKS 1718–649, has been confirmed so far. These objects, which may transition into larger radio galaxies, are a stepping stone to understanding AGN evolution. It is not completely clear how these young galaxies, seen edge-on, can produce high-energyγrays. PMN J1603–4904 has been detected by TANAMI Very Long Baseline Interferometry (VLBI) observations and has been followed-up with multiwavelength observations. AFermiGamma-ray Space Telescope Large Area Telescope (Fermi-LAT)γ-ray source has been associated with this young galaxy in the LAT catalogs. We have obtainedChandraobservations of the source to consider the possibility of source confusion due to the relatively large positional uncertainty ofFermi-LAT. The goal was to investigate the possibility of other X-ray bright sources in the vicinity of PMN J1603–4904 that could be counterparts to theγ-ray emission. WithChandra/ACIS, we find no other sources in the uncertainty ellipse ofFermi-LAT data, which includes an improved localization analysis of eight years of data. We further study the X-ray fluxes and spectra. We conclude that PMN J1603–4904 is indeed the second confirmedγ-ray bright young radio galaxy.
