A New Search for Neutrino Point Sources with IceCube

Discussion timeslot (ZOOM-Meeting): 19. July 2021 - 18:00
ZOOM-Meeting URL: https://desy.zoom.us/j/91999581729
ZOOM-Meeting ID: 91999581729
ZOOM-Meeting Passcode: ICRC2021
Corresponding Session: https://icrc2021-venue.desy.de/channel/39-Astrophysical-Neutrinos-Theoretical-amp-Experimental-Results-NU/70
Live-Stream URL: https://icrc2021-venue.desy.de/livestream/Discussion-05/6

Abstract:
"The IceCube Neutrino Observatory, deployed beneath the South Pole, is the largest neutrino telescope in the World. While eight years have passed since IceCube discovered a diffuse flux of high-energy astrophysical neutrinos, the sources of the vast majority of these neutrinos remain unknown. Here, we present a new search for neutrino point sources that improves the accuracy of the statistical analysis, especially in the low energy regime. We replaced the usual Gaussian approximations of IceCube's point spread function with precise numerical representations, obtained from simulations, and combined them with new machine learning-based estimates of event energies and angular errors. Depending on source properties, the new analysis provides improved source localization, flux characterization and thereby discovery potential (by up to 30%) over previous works. The analysis will be applied to IceCube data that has been recorded with the full 86-string detector configuration from 2011 to 2020 and includes improved detector calibration"

Authors: Hans Niederhausen | Theo Glauch | Chiara Bellenghi | Tomas Kontrimas | Christian Haack | Martin Wolf | Rene Reimann | for the IceCube Collaboration
Collaboration: IceCube

Indico-ID: 814
Proceeding URL: https://pos.sissa.it/395/1138