Search for the multiwavelength counterparts to extragalactic unassociated Fermi γ-ray sources

Alberto Ulgiati, Simona Paiano, Fabio Pintore +7

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 go…