Galactic-disk enhancement of cosmic rays at E > 1012eV

Ogio, S. and Tsunesada, Y. and Kakimoto, F. and Burgoa, O. and Gotoh, E. and Harada, D. and Kaneko, T. and Matsubara, Y. and Miranda, P. and Mizumoto, Y. and Morizawa, A. and Murakami, K. and Nakatani, H. and Nishi, K. and Shimoda, S. and Shirasaki, Y. and Tajima, N. and Tokunou, H. and Toyoda, Y. and Velarde, A. and Yamada, Y. and Yoshii, H. (2001) Galactic-disk enhancement of cosmic rays at E > 1012eV. Il nuovo cimento C, 24 C (4\5). pp. 625-630. ISSN 1826-9885

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We observed an enhancement of cosmic rays from the Vela region with SAS array at Mt. Chacaltaya in Bolivia. It is not possible to conclude that this enhancement is caused by primary gamma-rays, since the observed events not limited with the less muons in the air showers show the same enhancement. In order to confirm this result with improved statistics and to investigate the energy dependence of this enhancement, we have installed a new array, called MAS array. All the data with much higher statistics show the enhancement along the Whole galactic disk.

Item Type: Article
Additional Information: Paper presented at the Chacaltaya Meeting on Cosmic Ray Physics, La Paz, Bolivia, July 23-27, 2000.
Uncontrolled Keywords: Cosmic rays ; Cosmology ; Conference proceedings
Subjects: 500 Scienze naturali e Matematica > 550 Scienze della Terra > 551 Geologia, Idrologia, Meteorologia > 551.5 Meteorologia (Classificare qui l'atmosfera) (Classificare la previsione e le previsioni di specifici fenomeni meteorologici in 551.64; classificare la Micrometeorologia in 551.66) > 551.52 Termodinamica, interazioni atmosferiche con la superficie terrestre, temperature, radiazioni > 551.527 Radiazioni (per fenomeni ottici, vedi 551.565) > 551.5276 Radiazioni cosmiche (Include il rumore cosmico) (Classificare qui i raggi cosmici)
Depositing User: Marina Spanti
Date Deposited: 11 Mar 2020 11:07
Last Modified: 11 Mar 2020 11:07

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