Long-term variation of galactic cosmic ray intensity observed with the Nagoya multidirectional muon detector
K. Munakata*,
C. Kato,
R.R.S. Mendonça and
M. Tokumaru*: corresponding author
Pre-published on:
July 22, 2019
Published on:
July 02, 2021
Abstract
We analyze long-term variations of galactic cosmic ray intensity observed with the Nagoya multidirectional muon detector during a period between 1970 and 2016 which covers four solar activity cycles. We particularly analyze the rigidity spectrum of the modulation in 16-107 GV rigidity range by using the data recorded in 17 directional channels of Nagoya muon detectors together with 6 neutron monitor data. This paper reports very preliminary results of our analysis.
DOI: https://doi.org/10.22323/1.358.1129
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