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Start Over Author "Tsushima, I" Journal astroparticle physics
6 results on '"Tsushima, I"'

1. Energy determination in the Akeno Giant Air Shower Array experiment

Author

Takeda, M., Sakaki, N., Honda, K., Chikawa, M., Fukushima, M., Hayashida, N., Inoue, N., Kadota, K., Kakimoto, F., Kamata, K., Kawaguchi, S., Kawakami, S., Kawasaki, Y., Kawasumi, N., Mahrous, A.M., Mase, K., Mizobuchi, S., Morizane, Y., Nagano, M., Ohoka, H., Osone, S., Sasaki, M., Sasano, M., Shimizu, H.M., Shinozaki, K., Teshima, M., Torii, R., Tsushima, I., Uchihori, Y., Yamamoto, T., Yoshida, S., and Yoshii, H.

Published
2003
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2. The anisotropy of cosmic ray arrival directions around 10 18 eV

Author

Hayashida, N., Nagano, M., Nishikawa, D., Ohoka, H., Sakaki, N., Sasaki, M., Takeda, M., Teshima, M., Torii, R., Yamamoto, T., Yoshida, S., Honda, K., Kawasumi, N., Tsushima, I., Inoue, N., Kusano, E., Shinozaki, K., Souma, N., Kadota, K., Kakimoto, F., Kamata, K., Kawaguchi, S., Kawasaki, Y., Kitamura, H., Matsubara, Y., Murakami, K., Uchihori, Y., and Yoshii, H.

Published
1999
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3. The anisotropy of cosmic ray arrival directions around 1018 eV

Author

Hayashida, N., Honda, K., Inoue, N., Kadota, K., Kakimoto, F., Kakizawa, S., Kamata, K., Kawaguchi, S., Kawasaki, Y., Kawasumi, N., Kusano, E., Matsubara, Y., Mase, K., Minagawa, T., Murakami, K., Nagano, M., Nishikawa, D., Ohoka, H., Osone, S., Sakaki, N., Sasaki, M., Sasano, M., Shinozaki, K., Takeda, M., Teshima, M., Torii, R., Tsushima, I., Uchihori, Y., Yamamoto, T., Yoshida, S., Yoshii, H., and Collaboration, The AGASA

Subjects
Physics, Air shower, Astrophysics (astro-ph), Galactic Center, FOS: Physical sciences, Astronomy and Astrophysics, Cosmic ray, Akeno Giant Air Shower Array, Astrophysics, Anisotropy, Right ascension, Declination
Abstract

Anisotropy in the arrival directions of cosmic rays around 10^{18}eV is studied using data from the Akeno 20 km^2 array and the Akeno Giant Air Shower Array (AGASA), using a total of about 216,000 showers observed over 15 years above 10^{17}eV. In the first harmonic analysis, we have found significant anisotropy of $\sim$ 4 % around 10^{18}eV, corresponding to a chance probability of $\sim 10^{-5}$ after taking the number of independent trials into account. With two dimensional analysis in right ascension and declination, this anisotropy is interpreted as an excess of showers near the directions of the Galactic Center and the Cygnus region. This is a clear evidence for the existence of the galactic cosmic ray up to the energy of 10^{18}eV. Primary particle which contribute this anisotropy may be proton or neutron., Comment: 4pages, three figures, to appear in Procedings of 26th ICRC(Salt Lake City)

Published
1999

4. The cosmic ray energy spectrum above 3 × 1018 eV measured by the Akeno Giant Air Shower Array

Author

Yoshida, S., primary, Hayashida, N., additional, Honda, K., additional, Honda, M., additional, Imaizumi, S., additional, Inoue, N., additional, Kadota, K., additional, Kakimoto, F., additional, Kamata, K., additional, Kawaguchi, S., additional, Kawasumi, N., additional, Matsubara, Y., additional, Murakami, K., additional, Nagano, M., additional, Ohoka, H., additional, Teshima, M., additional, Tsushima, I., additional, and Yoshii, H., additional

Published
1995
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5. Possible evidence for ⩾ 10 GeV neutrons associated with the solar flare of 4 June 1991

Author

Chiba, N., primary, Dion, G.M., additional, Hayashida, N., additional, Honda, K., additional, Honda, M., additional, Inoue, N., additional, Kadota, K., additional, Kakimoto, F., additional, Kamata, K., additional, Kawaguchi, S., additional, Kawasumi, N., additional, Matsubara, Y., additional, Nagano, M., additional, Ohoka, H., additional, Teshima, M., additional, Tsushima, I., additional, Yoshida, S., additional, Yoshii, H., additional, and Yoshikoshi, T., additional

Published
1992
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