2019/08/15 by William Luszczak, Luszczak, William, Jim Braun +3
Physics and Astronomy · Earth and Planetary Sciences · #Astrophysics and Cosmic Phenomena #Neutrino Physics Research #Earthquake Detection and Analysis
paper · pdf · doi:10.48550/arxiv.1908.05637
Recent results from IceCube regarding TXS 0506+056 suggest that it may be\nuseful to test the hypothesis of multiple neutrino flares, where each flare is\nnot necessarily accompanied by a corresponding gamma-ray flare. An untriggered,\ntime-dependent, source-stacking search would be optimal for testing this\nhypothesis, however such an analysis has yet to be applied to the full duration\nof IceCube data. Here, we discuss one possible way of constructing such an\nanalysis, with a global test statistic obtained by summing the individual test\nstatistics associated with each signal-like flare in the sample. This has the\nadditional advantage of assessing the time structure of each source when\nrunning the analysis over a source catalog. We show that, for a signal\nconsisting of many small flares, this style of analysis represents a\nsignificant increase in discovery potential over both the existing single-flare\nfit and the time-integrated stacking methods. Potential source catalogs are\nexamined in combination with this method, including the possibility of a\n"self-triggered" catalog consisting of the locations of the highest energy\nnorthern sky events in the IceCube sample.\n