Kousaku Kamata

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M. Takeda,1 N. Hayashida,1 K. Honda,2 N. Inoue,3 K. Kadota,4 F. Kakimoto,4 K. Kamata,5 S. Kawaguchi,6 Y. Kawasaki,7 N. Kawasumi,8 H. Kitamura,9 E. Kusano,3 Y. Matsubara,10 K. Murakami,11 M. Nagano,12 D. Nishikawa,1 H. Ohoka,1 N. Sakaki,1 M. Sasaki,1 K. Shinozaki,3 N. Souma,3 M. Teshima,1 R. Torii,1 I. Tsushima,8 Y. Uchihori,13 T. Yamamoto,1 S. Yoshida,1 and(More)
The emission of neutral particles from Cygnus X-3 has been searched for at energies above 5 x 10 eV, using data from the Akeno 20-kmz air-shower array spanning the period December 1984 to July 1989. A 3.5a do excess is observed around the Cygnus X-3 region. This excess corresponds to a flux of ( l.8 ± 0.7) x 10 -17 cms above 5 x 10 eV, in agreement with the(More)
Anisotropy in the arrival directions of cosmic rays with energies above 10eV is studied using data from the Akeno 20 km array and the Akeno Giant Air Shower Array (AGASA), using a total of about 114,000 showers observed over 11 years. In the first harmonic analysis, we have found strong anisotropy of ∼ 4% around 10eV, corresponding to a chance probability(More)
We report a rst result on the cosmic ray energy spectrum above 3 10 18 eV measured by the Akeno Giant Air Shower Array (AGASA) from July 1990 to February 1994. The analysis method and the energy resolution of the AGASA experiment are described in some detail. The attening of the spectrum around 10 19 eV (ankle) is observed with a signicance of 2.9. If we(More)
A very energetic cosmic ray of energy about (1.72.6)10 20 eV was observed by the Akeno Giant Air Shower Array (AGASA) on December 3, 1993 from the direction of galactic longitude l=131 and galactic latitude b=-41 within an error circle of 1.0 radius. Shower characteristics such as lateral distribution and arrival time spread of charged particles, and(More)
In recent years, expressions close to realities have become possible thanks to the technologically advanced computer graphics. Secular change and weathering are important factors to create realistic computer graphics images. Metal rust is an important secular change and there are much research work on rust [Kanazawa et al. 2015]. Although the rust forming(More)
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