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Observation of PeV Gamma Rays from the Monogem Ring with the Tibet Air Shower Array
The Tibet AS Gamma Collaboration, M. Amenomori
We searched for steady PeV gamma-ray emission from the Monogem ring region with the Tibet air shower array from 1997 February to 2004 October. No evidence for statistically signifi…
A Northern Sky Survey for Steady TeV Gamma-Ray Point Sources Using the Tibet Air Shower Array
gamma Collaboration, M. Amenomori
Results on steady TeV -ray point source search using data taken from the Tibet HD (Feb. 1997 -- Sep. 1999) and Tibet III (Nov. 1999 -- Oct. 2001) arrays are presented. From $0^{…
Multi-TeV Gamma-Ray Flares from Markarian 421 in 2000 and 2001 Observed with the Tibet Air Shower Array
M. Amenomori
Several strong TeV gamma-ray flares were detected from Markarian 421 in the years 2000 and 2001 by the Tibet III air shower array at a level of statistical significance of 5.1 sigm…
Primary proton spectrum between 200 TeV and 1000 TeV observed with the Tibet burst detector and air shower array
M. Amenomori, S. Ayabe, Caidong
Since 1996, a hybrid experiment consisting of the emulsion chamber and burst detector array and the Tibet-II air-shower array has been operated at Yangbajing (4300 m above sea leve…
A study of the shadowing of galactic cosmic rays by the sun in a quiet phase of solar activity with the Tibet air shower array
M. Amenomori, S. Ayabe, Caidong
We have shown that the Sun's shadow by high energy cosmic rays moves year by year and its behavior is correlated with a time variation of the large-scale structure of the solar and…
Measurement of air shower cores to study the cosmic ray composition in the knee energy region
M. Amenomori, S. Ayabe, Caidong
Since 1996, a hybrid experiment consisting of an emulsion chamber and a burst detector array and the Tibet-II air shower array has been operated at Yangbajing (4300 m above sea lev…