Analysis of the Galactic Astrophysical Flux with 12.1 Years of IceCube Starting Tracks, Throughgoing Tracks and Cascades
Abstract
The IceCube Neutrino Observatory has measured an isotropic astrophysical neutrino flux through various detection channels for over 12 years. IceCube has also detected neutrino emission from the Galactic plane at the 4.5$\sigma$ significance level compared to a background-only hypothesis, testing three models of Galactic diffuse emission: Fermi-LAT $\pi^0$, KRA$_{\gamma}^{5}$, KRA$_{\gamma}^{50}$. We present an analysis combining 3 detection channels: throughgoing tracks, starting tracks and cascades. The throughgoing track sample is restricted to the northern sky to reduce atmospheric backgrounds, while the starting track and cascade samples reduce the atmospheric neutrino backgrounds in the southern sky by vetoing accompanying muons. We will use this combination of event samples from 12.1 years of data to measure the Galactic neutrino spectrum in the TeV to PeV energy range and independently for multiple galactic regions in a model independent procedure. We will simultaneously measure the isotropic cosmic neutrino flux.
Authors 97
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RWTH Aachen University · University of Wisconsin–Madison
Affiliation as printed
III. Physikalisches Institut , RWTH Aachen University , D-52056 Aachen , Germany
University of Wisconsin , Madison
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Affiliation as printed
Université Libre de Bruxelles , Science Faculty CP230 , B-1050 Brussels , Belgium
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University of California, Berkeley
Affiliation as printed
Dept. of Physics , University of California , Berkeley , CA 94720 , USA
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Affiliation as printed
Fakultät für Physik & Astronomie , Ruhr-Universität Bochum , D-44780 Bochum , Germany
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RWTH Aachen University · University of Wisconsin–Madison
Affiliation as printed
III. Physikalisches Institut , RWTH Aachen University , D-52056 Aachen , Germany
University of Wisconsin , Madison
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Georgia Institute of Technology
Affiliation as printed
School of Physics and Center for Relativistic Astrophysics , Georgia Institute of Technology , Atlanta , GA 30332 , USA
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Affiliation as printed
Department of Physics , University of Adelaide , Adelaide , 5005 , Australia
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RWTH Aachen University · University of Wisconsin–Madison
Affiliation as printed
III. Physikalisches Institut , RWTH Aachen University , D-52056 Aachen , Germany
University of Wisconsin , Madison
-
Affiliation as printed
Université Libre de Bruxelles , Science Faculty CP230 , B-1050 Brussels , Belgium
-
RWTH Aachen University · University of Wisconsin–Madison
Affiliation as printed
III. Physikalisches Institut , RWTH Aachen University , D-52056 Aachen , Germany
University of Wisconsin , Madison
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RWTH Aachen University · University of Wisconsin–Madison
Affiliation as printed
III. Physikalisches Institut , RWTH Aachen University , D-52056 Aachen , Germany
University of Wisconsin , Madison
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Southern University and Agricultural and Mechanical College
Affiliation as printed
Dept. of Physics , Southern University , Baton Rouge , LA 70813 , USA
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