2025ApJ...990...18L

Investigating the correlation between the tidal disruption event (TDE) population and IceCube neutrinos could help us better understand whether TDEs could be potential high-energy neutrino emitters. In this paper, we perform a systematic search for TDEs that are associated with neutrinos in a sample including 143 IceCube neutrino alert events and 52 TDEs classified by the Zwicky Transient Facility Bright Transient Survey. Furthermore, considering that the TDEs/TDE candidates reported as potential IceCube neutrino emitters are all accompanied by infrared (IR) echo emission, we further select TDEs with IR echoes from these 52 TDEs as a subsample to examine their correlation with neutrinos. Based on the Wide-field Infrared Survey Explorer mission database, seven TDEs are identified as having IR echoes. Then we employ Monte Carlo simulations to quantify the correlation between the TDE sample/subsample and IceCube neutrinos. Finally, after considering spatial and temporal criteria, the seven TDEs with IR echoes show the most significant correlation at the 2.46σ confidence level. If we tentatively further take the time delay factor into account, the correlation enhances to the 2.66σ confidence level. The correlation is primarily contributed by two TDEs: AT2019dsg and AT2019azh. The latter's association with a neutrino alert, IC230217A, is newly reported in this work. We discuss the possible physical connection between AT2019azh and the neutrino event IC230217A.