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Astrophysics > High Energy Astrophysical Phenomena

arXiv:2108.04093 (astro-ph)
[Submitted on 9 Aug 2021]

Title:Testing the Pointing of IceCube using the Moon Shadow in Cosmic-Ray Induced Muons

Authors:Saskia Philippen, Thorsten Glüsenkamp, Sebastian Schindler (for the IceCube Collaboration)
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Abstract:The IceCube Neutrino Observatory is a cubic-kilometer-scaled detector located at the Geographic South Pole. The calibration of the directional reconstruction of neutrino-induced muons and the pointing accuracy of the detector have to be verified. For these purposes, the moon is used as a standard candle to not rely exclusively on simulated data: Cosmic rays get absorbed by the moon, which leads to a deficit of cosmic-ray-induced muons from the lunar direction that is measured with high statistics. The moon shadow analysis uses an unbinned maximum-likelihood method, which has been methodically improved, and uses a larger detector compared to previous analyses. This allows to observe the shadow with a large significance per month. In the first part, it is found that incorporating a moon disk model, a coordinate-dependent uncertainty scaling and an improved background estimation increase the significance compared to a previous more simplistic analysis. In the second part, the performance of two new directional muon reconstruction algorithms is verified.
Comments: Presented at the 37th International Cosmic Ray Conference (ICRC 2021). See arXiv:2107.06966 for all IceCube contributions. 8 pages, 2 figures
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE); Instrumentation and Methods for Astrophysics (astro-ph.IM)
Report number: PoS-ICRC2021-1087
Cite as: arXiv:2108.04093 [astro-ph.HE]
  (or arXiv:2108.04093v1 [astro-ph.HE] for this version)
  https://doi.org/10.48550/arXiv.2108.04093

Submission history

From: Sebastian Schindler [view email]
[v1] Mon, 9 Aug 2021 14:49:30 UTC (1,223 KB)
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