Investigating Energy-Dependent Anisotropy in Cosmic Rays with IceTop Surface Array
Rasha Abbasi, Paolo Desiati, Juan Carlos D\'iaz V\'elez, Frank McNally (for the IceCube Collaboration)
TL;DR
This paper analyzes cosmic-ray anisotropy across a wide energy range using IceTop data from 2011 to 2022, providing new insights into high-energy anisotropy patterns in the southern hemisphere.
Contribution
It extends the measurement of cosmic-ray anisotropy to higher energies than previous IceTop studies with improved statistical and simulation methods.
Findings
Anisotropy patterns observed across four energy ranges from 300 TeV to 6.9 PeV.
Enhanced statistical precision and updated simulations improve anisotropy analysis.
Results suggest potential links between anisotropy, energy spectrum, and mass composition.
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.
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Taxonomy
TopicsAstronomy and Astrophysical Research · Scientific Research and Discoveries · Astrophysics and Cosmic Phenomena