Search for the multiwavelength counterparts to extragalactic
unassociated Fermi {\gamma}-ray sources
Search for the multiwavelength counterparts to extragalactic
unassociated Fermi {\gamma}-ray sources
Aims. In this paper, we searched for multi-wavelength (X-ray, optical and radio) counterparts to the unassociated gamma-ray sources (UGS) of the Fermi 4FGL-DR4 catalog. The main goal is to identify new blazars and/or new active galactic nuclei (AGNs) emitting at GeV energies [like (Narrow Line) Seyfert-1 and radio galaxies]. Methods. …