General Information

This analysis is meant to be complementary to standard point source searches. It is used to find a distribution of clustering high energy neutrino events, caused by weak astrophysical point sources and test against the hypothesis of an completly istotropic, diffuse flux. Weak implies in this case that single sources are too faint to be detected individually by standard searches. Instead we use an angular auto-correlation analysis, in this particular case we investigate expansion coefficients of spherical harmonics.

The presented analysis is consecutive to the already existing analysis by Martin Leuermann (published in Astroparticle Physics) and Lisa Schumacher and can mainly be understood as an extension to 6-years of IceCube including IC59, IC79, IC86 2011, IC86 2012 13 14. Additionaly, changes in the skymap simulation and the test-statistics fitting procedure have been implemented in order to increase the overall accuracy. Furthermore astrophysical models can be tested, i.e limits on specific source parameters of astrophysical objects can be calculated from the experimental neutrino limits. Different models based on Gamma Ray Measurements (Fermi LAT) and Radio Measurements are included.