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Time Integrated searches for Astrophysical Neutrino Sources using the IceCube Detector and Gender in Physics studies for the Genera Project

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Defense Thèse de doctorat : Univ. Genève, 2019 - Sc. 5329 - 2019/04/15
Abstract This thesis presents point-like neutrino source searches using ten years of IceCube data collected between Apr.~6, 2008 to Jul.~10, 2018. These searches evaluate the significance of an astrophysical signal by looking for an excess of clustered neutrino events with energies typically above 1 TeV among a background of atmospheric muons and neutrinos. This involved optimizing the event selection for the final six years of data and applying it to: a full sky scan, a selected source catalog, a catalog population study, and stacked galactic catalog searches. The improved sensitivity of these analyses did not find new evidence for a steady state neutrino source. Upper-limits were placed on the expected flux from sources in the catalogs and an excess was identified as inconsistent with background at the level of 2.9σ at the coordinates of NGC 1068. These results motivate interest in point-like sources given future updates to the detector or a longer lifetime of data.
Keywords NeutrinoAstrophysicsMulti-messengerCosmic-rays
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URN: urn:nbn:ch:unige-1209245
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Thesis (3.5 MB) - public document Free access
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Research group Groupe Montaruli
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CARVER, Tessa. Time Integrated searches for Astrophysical Neutrino Sources using the IceCube Detector and Gender in Physics studies for the Genera Project. Université de Genève. Thèse, 2019. doi: 10.13097/archive-ouverte/unige:120924 https://archive-ouverte.unige.ch/unige:120924

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Deposited on : 2019-07-18

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