Leptohadronic model for 4FGL J1210.3+3928. The solid green line corresponds to the multiwavelength photon emission. The components are shown with the dashed line. The dash-dotted green line corresponds to the all-flavor neutrino spectrum. The gray shaded area is a neutrino flux from NGC 4151 under the assumption of a power law with spectral index γ = 2.7 (Abbasi et al. 2024a). The dash-dotted black line shows the 10-year sensitivity of the IceCube-Gen2 optical array (Aartsen et al. 2021), the dashed black line the – 10-year all-flavor sensitivity of the IceCube-Gen2 radio array (Aartsen et al. 2021), and the dotted black line the – 10-year all-flavor sensitivity of GRAND 200k (Álvarez-Muñiz et al. 2020).