Galactic and Extragalactic Analysis of the Astrophysical Muon Neutrino Flux with 12.3 years of IceCube Track Data

The IceCube Collaboration

Galactic and Extragalactic Analysis of the Astrophysical Muon Neutrino Flux with 12.3 years of IceCube Track Data

The IceCube Collaboration

Physics and Astronomy

Loyola University Chicago
German Electron Synchrotron
University of Canterbury
University of Wisconsin-Madison
Institute of Physics Bhubaneswar
Université libre de Bruxelles
University of Copenhagen
TU Dortmund University
University of Delaware
Marquette University
Friedrich-Alexander University Erlangen-Nürnberg
Harvard University
University of Utah
South Dakota School of Mines & Technology
University of California at Irvine
University of California at Berkeley
Ohio State University
Ruhr University Bochum
Chalmers University of Technology
Uppsala University
Technical University of Munich
RWTH Aachen University
University of Rochester
University of Maryland, College Park
University of Padua
University of Kansas
Karlsruhe Institute of Technology
Johannes Gutenberg University Mainz
Georgia Institute of Technology
Adelaide University
University of Münster
Drexel University

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

The Ice Cube Neutrino Observatory has been measuring an isotropic astrophysical neutrino flux in multiple detection channels for almost a decade. Galactic diffuse emission, which arises from the interactions between cosmic rays and the interstellar medium, is an expected signal in IceCube. The superposition of an extragalactic flux and a galactic flux results in directional structure and variations in the spectrum. In this work, we use 12.3 years of high-purity muon-neutrino induced muon track data to perform a dedicated search for this galactic emission, combined with a spectral measurement of the isotropic astrophysical neutrino flux. To distinguish a galactic component from the dominant atmospheric and isotropic astrophysical components, the precise directional information available for muon tracks is fully utilized in a three-dimensional forward folding likelihood fit. We test a state-of-the-art model prediction of galactic diffuse emission based on recent cosmic ray data (CRINGE). We fit this prediction as a template scaled by a factor Ψ_CRINGE, and find 2.9 ± 1.1 × Ψ_CRINGE with a significance of 2.7σ in an energy range between 400 GeV and 60 TeV in the Northern Sky.

Original language	English
Article number	1046
Journal	Proceedings of Science
Volume	444
State	Published - Sep 27 2024
Event	38th International Cosmic Ray Conference, ICRC 2023 - Nagoya, Japan Duration: Jul 26 2023 → Aug 3 2023

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@article{4b84fda3dc3549049f91dce23114d7a2,

title = "Galactic and Extragalactic Analysis of the Astrophysical Muon Neutrino Flux with 12.3 years of IceCube Track Data",

abstract = "The Ice Cube Neutrino Observatory has been measuring an isotropic astrophysical neutrino flux in multiple detection channels for almost a decade. Galactic diffuse emission, which arises from the interactions between cosmic rays and the interstellar medium, is an expected signal in IceCube. The superposition of an extragalactic flux and a galactic flux results in directional structure and variations in the spectrum. In this work, we use 12.3 years of high-purity muon-neutrino induced muon track data to perform a dedicated search for this galactic emission, combined with a spectral measurement of the isotropic astrophysical neutrino flux. To distinguish a galactic component from the dominant atmospheric and isotropic astrophysical components, the precise directional information available for muon tracks is fully utilized in a three-dimensional forward folding likelihood fit. We test a state-of-the-art model prediction of galactic diffuse emission based on recent cosmic ray data (CRINGE). We fit this prediction as a template scaled by a factor ΨCRINGE, and find 2.9 ± 1.1 × ΨCRINGE with a significance of 2.7σ in an energy range between 400 GeV and 60 TeV in the Northern Sky.",

author = "\{The IceCube Collaboration\} and R. Abbasi and M. Ackermann and J. Adams and Agarwalla, \{S. K.\} and Aguilar, \{J. A.\} and M. Ahlers and Alameddine, \{J. M.\} and Amin, \{N. M.\} and K. Andeen and G. Anton and C. Arg{\"u}elles and Y. Ashida and S. Athanasiadou and Axani, \{S. N.\} and X. Bai and Balagopal, \{A. V.\} and M. Baricevic and Barwick, \{S. W.\} and V. Basu and R. Bay and Beatty, \{J. J.\} and \{Becker Tjus\}, J. and J. Beise and C. Bellenghi and C. Benning and S. BenZvi and D. Berley and E. Bernardini and Besson, \{D. Z.\} and E. Blaufuss and S. Blot and F. Bontempo and Book, \{J. Y.\} and \{Boscolo Meneguolo\}, C. and S. B{\"o}ser and O. Botner and J. B{\"o}ttcher and E. Bourbeau and J. Braun and B. Brinson and J. Brostean-Kaiser and Burley, \{R. T.\} and Busse, \{R. S.\} and D. Butterfield and Campana, \{M. A.\} and K. Carloni and Carnie-Bronca, \{E. G.\} and S. Chattopadhyay and N. Chau and J. Kiryluk",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s) under the terms of the Creative Commons.; 38th International Cosmic Ray Conference, ICRC 2023 ; Conference date: 26-07-2023 Through 03-08-2023",

year = "2024",

month = sep,

day = "27",

language = "English",

volume = "444",

journal = "Proceedings of Science",

issn = "1824-8039",

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TY - JOUR

T1 - Galactic and Extragalactic Analysis of the Astrophysical Muon Neutrino Flux with 12.3 years of IceCube Track Data

AU - The IceCube Collaboration

AU - Abbasi, R.

AU - Ackermann, M.

AU - Adams, J.

AU - Agarwalla, S. K.

AU - Aguilar, J. A.

AU - Ahlers, M.

AU - Alameddine, J. M.

AU - Amin, N. M.

AU - Andeen, K.

AU - Anton, G.

AU - Argüelles, C.

AU - Ashida, Y.

AU - Athanasiadou, S.

AU - Axani, S. N.

AU - Bai, X.

AU - Balagopal, A. V.

AU - Baricevic, M.

AU - Barwick, S. W.

AU - Basu, V.

AU - Bay, R.

AU - Beatty, J. J.

AU - Becker Tjus, J.

AU - Beise, J.

AU - Bellenghi, C.

AU - Benning, C.

AU - BenZvi, S.

AU - Berley, D.

AU - Bernardini, E.

AU - Besson, D. Z.

AU - Blaufuss, E.

AU - Blot, S.

AU - Bontempo, F.

AU - Book, J. Y.

AU - Boscolo Meneguolo, C.

AU - Böser, S.

AU - Botner, O.

AU - Böttcher, J.

AU - Bourbeau, E.

AU - Braun, J.

AU - Brinson, B.

AU - Brostean-Kaiser, J.

AU - Burley, R. T.

AU - Busse, R. S.

AU - Butterfield, D.

AU - Campana, M. A.

AU - Carloni, K.

AU - Carnie-Bronca, E. G.

AU - Chattopadhyay, S.

AU - Chau, N.

AU - Kiryluk, J.

PY - 2024/9/27

Y1 - 2024/9/27

N2 - The Ice Cube Neutrino Observatory has been measuring an isotropic astrophysical neutrino flux in multiple detection channels for almost a decade. Galactic diffuse emission, which arises from the interactions between cosmic rays and the interstellar medium, is an expected signal in IceCube. The superposition of an extragalactic flux and a galactic flux results in directional structure and variations in the spectrum. In this work, we use 12.3 years of high-purity muon-neutrino induced muon track data to perform a dedicated search for this galactic emission, combined with a spectral measurement of the isotropic astrophysical neutrino flux. To distinguish a galactic component from the dominant atmospheric and isotropic astrophysical components, the precise directional information available for muon tracks is fully utilized in a three-dimensional forward folding likelihood fit. We test a state-of-the-art model prediction of galactic diffuse emission based on recent cosmic ray data (CRINGE). We fit this prediction as a template scaled by a factor ΨCRINGE, and find 2.9 ± 1.1 × ΨCRINGE with a significance of 2.7σ in an energy range between 400 GeV and 60 TeV in the Northern Sky.

AB - The Ice Cube Neutrino Observatory has been measuring an isotropic astrophysical neutrino flux in multiple detection channels for almost a decade. Galactic diffuse emission, which arises from the interactions between cosmic rays and the interstellar medium, is an expected signal in IceCube. The superposition of an extragalactic flux and a galactic flux results in directional structure and variations in the spectrum. In this work, we use 12.3 years of high-purity muon-neutrino induced muon track data to perform a dedicated search for this galactic emission, combined with a spectral measurement of the isotropic astrophysical neutrino flux. To distinguish a galactic component from the dominant atmospheric and isotropic astrophysical components, the precise directional information available for muon tracks is fully utilized in a three-dimensional forward folding likelihood fit. We test a state-of-the-art model prediction of galactic diffuse emission based on recent cosmic ray data (CRINGE). We fit this prediction as a template scaled by a factor ΨCRINGE, and find 2.9 ± 1.1 × ΨCRINGE with a significance of 2.7σ in an energy range between 400 GeV and 60 TeV in the Northern Sky.

UR - https://www.scopus.com/pages/publications/85212267688

M3 - Conference article

AN - SCOPUS:85212267688

SN - 1824-8039

VL - 444

JO - Proceedings of Science

JF - Proceedings of Science

M1 - 1046

T2 - 38th International Cosmic Ray Conference, ICRC 2023

Y2 - 26 July 2023 through 3 August 2023

ER -

Galactic and Extragalactic Analysis of the Astrophysical Muon Neutrino Flux with 12.3 years of IceCube Track Data

Abstract

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