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

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.

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Publication Details

Published
2025-09-23
DOI
https://doi.org/10.22323/1.501.0167
Primary Topic
Astronomy and Astrophysical Research
Type
article
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article

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

L. Schumacher, L. Köpke, Sofia Athanasiadou, Kiara Carloni et al.
Astronomy and Astrophysical Research
article

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

L. Schumacher, L. Köpke, Sofia Athanasiadou, Kiara Carloni, Sarah Mechbal, Rishi Babu, Philip Weigel, Arun Vaidyanathan, Thijs van Eeden, Diego Alberto Coloma Borja, G. M. Spiczak, Christy Love, M. Lamoureux, Thien Nhan Chau, Spencer Griswold, Woosik Kang, I. Taboada, Daniel Salazar-Gallegos, S. R. Klein, Michael Campana, James DeLaunay, Frank Schröder, Jonathan Mauro, Felix Schlüter, C. H. Wiebusch, P. Desiati, Lukas Hennig, Alexander G. Hayes, Abdul Rehman, C. De Clercq, K. D. de Vries, Alexander Sandrock, Anil Kumar, Sebastian Schindler, Yuriy Popovych, Axel Pontén, Federico Bontempo, Hershal Pandya, Ek Narayan Paudel, A. Parenti, G. de Wasseige, Emre Burak Yildizci, Veronika Palušová, A. Haungs, Govind P. Agrawal, Erik Ganster, Leonora Kardum, Shefali Shefali, J. Vandenbroucke, Colton Hill, Frederik Hermann Lauber, J. C. Díaz–Vélez, Richard Naab, Julian Saffer, Christoph Raab, J. V. Santen, Félix Carbonell, Matheus Hostert, Miaochen Jin, Karriem Upshaw, Diyaselis Delgado, G. C. 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article en

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.

National Science Foundation, U.S. Department of Energy, University of Wisconsin-Madison, Nvidia, Michigan State University, Villum Fonden, Polarforskningssekretariatet, Marquette University, Western Canada Research Grid, European Commission, National Research Foundation, Deutsche Forschungsgemeinschaft, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Fonds De La Recherche Scientifique - FNRS, Belgian Federal Science Policy Office, Fonds Wetenschappelijk Onderzoek, National Research Foundation of Korea, Knut och Alice Wallenbergs Stiftelse, Vetenskapsrådet, RWTH Aachen University, Chiba University, Helmholtz Alliance for Astroparticle Physics, Alliance de recherche numérique du Canada, College of Engineering, Michigan State University, Natural Sciences and Engineering Research Council of Canada, Deutsches Elektronen-Synchrotron, Japan Society for the Promotion of Science, Marsden Fund, Institute for Global Prominent Research, Chiba University, Office of Polar Programs, Office of Advanced Cyberinfrastructure, Office of Experimental Program to Stimulate Competitive Research
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Astronomy and Astrophysical Research
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