Search for Multi-flare Neutrino Emissions in 10 yr of IceCube Data from a Catalog of Sources

A recent time-integrated analysis of a catalog 110 candidate neutrino sources revealed cumulative excess in the data collected by IceCube between 2008 April 6 and 2018 July 10. This excess, inconsistent with background hypothesis Northern Hemisphere at 3.3? level, is associated four sources: NGC 1068, TXS 0506+056, PKS 1424+240, GB6 J1542+6129. Letter presents two time-dependent emission searches on same sample catalog: point-source search that looks for most significant source combining space, energy, time information events, population test based binomial statistics from subset sources. Compared to previous searches, these analyses enable feature possibly find multiple flares single direction an unbinned maximum-likelihood method. M87 found be this level 1.7? post-trial, 0506+056 only which are reconstructed. The reports 3.0? M87, J1542+6129, 1068.