Multiwavelength and Neutrino Emission from Blazar PKS 1502 + 106

Abstract In 2019 July, the IceCube experiment detected a high-energy neutrino from direction of powerful blazar PKS 1502+106. We perform multiwavelength and multimessenger modeling this source, using fully selfconsistent one-zone model that includes contribution external radiation fields typical flat-spectrum radio quasars. identify three different activity states blazar: one quiescent state two flaring with hard soft gamma-ray spectra. find hadronic models can describe emission during all states: leptohadronic photohadronic processes to X-rays gamma-rays, proton synchrotron model, where keV 10 GeV comes radiation. Both predict substantial flux is correlated X-ray fluxes. Our results are compatible detection state, based on event rate statistics. conclude spectra observed bright flares strongly suggest contribution, which be interpreted as additional evidence for cosmic-ray acceleration in source independently observations. more arguments made favor vis-a-vis scenario, such lower energetic demand state. However, same would disfavored 1502+106 if no events were found before 2010, require an archival search.