Astronomy and Astrophysics – Astrophysics – Instrumentation and Methods for Astrophysics
Scientific paper
2011-03-14
Astroparticle Physics 35, 2011, 201-210
Astronomy and Astrophysics
Astrophysics
Instrumentation and Methods for Astrophysics
12 pages, 9 figures
Scientific paper
10.1016/j.astropartphys.2011.07.
A method for a time-dependent search for flaring astrophysical sources which can be potentially detected by large neutrino experiments is presented. The method uses a time-clustering algorithm combined with an unbinned likelihood procedure. By including in the likelihood function a signal term which describes the contribution of many small clusters of signal-like events, this method provides an effective way for looking for weak neutrino flares over different time-scales. The method is sensitive to an overall excess of events distributed over several flares which are not individually detectable. For standard cases (one flare) the discovery potential of the method is about 15% worse than a standard time-dependent point source analysis with unknown duration of the flare. However, for flares sufficiently shorter than the total observation period, the method is more sensitive than a time-integrated analysis.
Bernardini Elisa
Cruz Silva A. H.
Góra Dariusz
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