Muon Bundles As a Tool for Studying Cosmic-Ray Anisotropy

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发表日期：

2024年12月1日

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M. B. Amelchakov,
A. G. Bogdanov,
A. Chiavassa,
A. N. Dmitrieva,
S. S. Khokhlov,
R. P. Kokoulin,
K. G. Kompaniets,
G. Mannocchi,
A. A. Petrukhin,
I. A. Shulzhenko,
V. V. Shutenko,
G. Trinchero,
I. I. Yashin,
E. A. Yurina

摘要

Abstract

A new method for studying cosmic ray anisotropy by means of muon bundle detection at the Earth’s surface is described. An important advantage of this method is a simple way to compensate the atmospheric effects in the counting rate of muon bundles. Seasonal and diurnal variations of the muon bundle counting rate are almost completely eliminated by using only one atmospheric parameter. For the first time, the muon multiplicity in the detected bundles was used to estimate the dependence of the anisotropy amplitude on the primary energy. Parameters of the cosmic ray dipole anisotropy were obtained for two average logarithmic values of primary energies of 1 and 5 PeV.