Investigating Energy-Dependent Anisotropy in Cosmic Rays with IceTop Surface Array

Icecube Collaboration

doi:10.22323/1.501.0167

Investigating Energy-Dependent Anisotropy in Cosmic Rays with IceTop Surface Array

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 Kansas
University of Delaware
Marquette University
Harvard University
University of Utah
Michigan State University
South Dakota School of Mines & Technology
University of California at Irvine
Technical University of Munich
University of California at Berkeley
Ohio State University
Ruhr University Bochum
Chalmers University of Technology
RWTH Aachen University
Uppsala University
University of Rochester
University of Maryland, College Park
University of Padua
National Institute for Nuclear Physics
University of Alabama
Karlsruhe Institute of Technology
Johannes Gutenberg University Mainz
Georgia Institute of Technology
Queen's University Kingston
Adelaide University

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

Abstract

This study presents preliminary results from the analysis of cosmic-ray anisotropy using air showers detected by the IceTop surface array between 2011 and 2022. With improved statistical precision and updated Monte Carlo simulation events compared to previous IceTop reports, we investigate anisotropy patterns across four energy ranges spanning from 300 TeV to 6.9 PeV. This work extends the measurement of cosmic-ray anisotropy in the southern hemisphere to higher energies than previously achieved with IceTop. Our results provide a foundation for exploring potential connections between the observed anisotropy, the energy spectrum, and the mass composition of the cosmic-ray flux.

Original language	English
Article number	167
Journal	Proceedings of Science
Volume	501
DOIs	https://doi.org/10.22323/1.501.0167
State	Published - Dec 30 2025
Event	39th International Cosmic Ray Conference, ICRC 2025 - Geneva, Switzerland Duration: Jul 15 2025 → Jul 24 2025

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@article{d68d87551bda4e17985e6dacd5ea5bf9,

title = "Investigating Energy-Dependent Anisotropy in Cosmic Rays with IceTop Surface Array",

abstract = "This study presents preliminary results from the analysis of cosmic-ray anisotropy using air showers detected by the IceTop surface array between 2011 and 2022. With improved statistical precision and updated Monte Carlo simulation events compared to previous IceTop reports, we investigate anisotropy patterns across four energy ranges spanning from 300 TeV to 6.9 PeV. This work extends the measurement of cosmic-ray anisotropy in the southern hemisphere to higher energies than previously achieved with IceTop. Our results provide a foundation for exploring potential connections between the observed anisotropy, the energy spectrum, and the mass composition of the cosmic-ray flux.",

author = "\{Icecube Collaboration\} and R. Abbasi and M. Ackermann and J. Adams and Agarwalla, \{S. K.\} and G. Agrawal and Aguilar, \{J. A.\} and M. Ahlers and Alameddine, \{J. M.\} and S. Ali and Amin, \{N. M.\} and K. Andeen and C. Arg{\"u}elles and Y. Ashida and S. Athanasiadou and Axani, \{S. N.\} and R. Babu and X. Bai and J. Baines-Holmes and A. Balagopal and Barwick, \{S. W.\} and S. Bash and E. Bastow and V. Basu and R. Bay and Beatty, \{J. J.\} and \{Becker Tjus\}, J. and P. Behrens and J. Beise and C. Bellenghi and B. Benkel and S. BenZvi and D. Berley and E. Bernardini and Besson, \{D. Z.\} and E. Blaufuss and L. Bloom and S. Blot and I. Bodo and F. Bontempo and \{Book Motzkin\}, \{J. Y.\} and \{Boscolo Meneguolo\}, C. and S. B{\"o}ser and O. Botner and J. B{\"o}ttcher and G. Bratrud and J. Braun and B. Brinson and Z. Brisson-Tsavoussis and Burley, \{R. T.\} and J. Kiryluk",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s); 39th International Cosmic Ray Conference, ICRC 2025 ; Conference date: 15-07-2025 Through 24-07-2025",

year = "2025",

month = dec,

day = "30",

doi = "10.22323/1.501.0167",

language = "English",

volume = "501",

journal = "Proceedings of Science",

issn = "1824-8039",

}

TY - JOUR

T1 - Investigating Energy-Dependent Anisotropy in Cosmic Rays with IceTop Surface Array

AU - Icecube Collaboration

AU - Abbasi, R.

AU - Ackermann, M.

AU - Adams, J.

AU - Agarwalla, S. K.

AU - Agrawal, G.

AU - Aguilar, J. A.

AU - Ahlers, M.

AU - Alameddine, J. M.

AU - Ali, S.

AU - Amin, N. M.

AU - Andeen, K.

AU - Argüelles, C.

AU - Ashida, Y.

AU - Athanasiadou, S.

AU - Axani, S. N.

AU - Babu, R.

AU - Bai, X.

AU - Baines-Holmes, J.

AU - Balagopal, A.

AU - Barwick, S. W.

AU - Bash, S.

AU - Bastow, E.

AU - Basu, V.

AU - Bay, R.

AU - Beatty, J. J.

AU - Becker Tjus, J.

AU - Behrens, P.

AU - Beise, J.

AU - Bellenghi, C.

AU - Benkel, B.

AU - BenZvi, S.

AU - Berley, D.

AU - Bernardini, E.

AU - Besson, D. Z.

AU - Blaufuss, E.

AU - Bloom, L.

AU - Blot, S.

AU - Bodo, I.

AU - Bontempo, F.

AU - Book Motzkin, J. Y.

AU - Boscolo Meneguolo, C.

AU - Böser, S.

AU - Botner, O.

AU - Böttcher, J.

AU - Bratrud, G.

AU - Braun, J.

AU - Brinson, B.

AU - Brisson-Tsavoussis, Z.

AU - Burley, R. T.

AU - Kiryluk, J.

PY - 2025/12/30

Y1 - 2025/12/30

N2 - This study presents preliminary results from the analysis of cosmic-ray anisotropy using air showers detected by the IceTop surface array between 2011 and 2022. With improved statistical precision and updated Monte Carlo simulation events compared to previous IceTop reports, we investigate anisotropy patterns across four energy ranges spanning from 300 TeV to 6.9 PeV. This work extends the measurement of cosmic-ray anisotropy in the southern hemisphere to higher energies than previously achieved with IceTop. Our results provide a foundation for exploring potential connections between the observed anisotropy, the energy spectrum, and the mass composition of the cosmic-ray flux.

AB - This study presents preliminary results from the analysis of cosmic-ray anisotropy using air showers detected by the IceTop surface array between 2011 and 2022. With improved statistical precision and updated Monte Carlo simulation events compared to previous IceTop reports, we investigate anisotropy patterns across four energy ranges spanning from 300 TeV to 6.9 PeV. This work extends the measurement of cosmic-ray anisotropy in the southern hemisphere to higher energies than previously achieved with IceTop. Our results provide a foundation for exploring potential connections between the observed anisotropy, the energy spectrum, and the mass composition of the cosmic-ray flux.

UR - https://www.scopus.com/pages/publications/105029019019

U2 - 10.22323/1.501.0167

DO - 10.22323/1.501.0167

M3 - Conference article

AN - SCOPUS:105029019019

SN - 1824-8039

VL - 501

JO - Proceedings of Science

JF - Proceedings of Science

M1 - 167

T2 - 39th International Cosmic Ray Conference, ICRC 2025

Y2 - 15 July 2025 through 24 July 2025

ER -

Investigating Energy-Dependent Anisotropy in Cosmic Rays with IceTop Surface Array

Abstract

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