Complete cross-match of 242 ISP BL Lac X-ray bright AGN sources with IceCube GOLD high-significance neutrino events. Analysis includes Class-H spectral hardening source classification, temporal correlation window ±30 days, and Poisson significance testing. Identifies 1 Class-H source (1WGA J0506.6-0857, p=0.03739) within GOLD observation period.
Yoshimitsu Katayama (Mon,) studied this question.