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The Design of Diamond Compton Telescope
Kinya Hibino, Toshisuke Kashiwagi, Shoji Okuno +6
We have developed radiation detectors using the new synthetic diamonds. The diamond detector has an advantage for observations of "low/medium" energy gamma rays as a Compton telesc…
Energy determination in the Akeno Giant Air Shower Array experiment
M. Takeda, N. Sakaki, K. Honda +29
Using data from more than ten-years of observations with the Akeno Giant Air Shower Array (AGASA), we published a result that the energy spectrum of ultra-high energy cosmic rays e…
Updated AGASA event list above 4x10^19eV
N. Hayashida, K. Honda, N. Inoue +26
After our Ap.J. publication of the Akeno Giant Air Shower Array (AGASA) results in 1999 (Takeda et al., 1999), we observed nine events with energies above 4 10eV un…
The Anisotropy of Cosmic Ray Arrival Direction around 10^18eV
N. Hayashida, K. Honda, N. Inoue +29
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…
Small-scale anisotropy of cosmic rays above 10^19eV observed with the Akeno Giant Air Shower Array
M. Takeda, N. Hayashida, K. Honda +25
With the Akeno Giant Air Shower Array (AGASA), 581 cosmic rays above 10^19eV, 47 above 4 x 10^19eV, and 7 above 10^20eV are observed until August 1998. Arrival direction distributi…
Extension of the Cosmic-Ray Energy Spectrum Beyond the Predicted Greisen-Zatsepin-Kuz'min Cutoff
M. Takeda, N. Hayashida, K. Honda +25
The cosmic-ray energy spectrum above 10^{18.5} eV is reported using the updated data set of the Akeno Giant Air Shower Array (AGASA) from February 1990 to October 1997. The energy…