<P><B>Abstract</B></P> <P>Previous measurements of the composition of Ultra-High Energy Cosmic Rays (UHECRs) made by the High Resolution Fly’s Eye (HiRes) and Pierre Auger Observatory (PAO) are seemingly contradict...
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https://www.riss.kr/link?id=A107606949
Abbasi, R.U. ; Abe, M. ; Abu-Zayyad, T. ; Allen, M. ; Anderson, R. ; Azuma, R. ; Barcikowski, E. ; Belz, J.W. ; Bergman, D.R. ; Blake, S.A. ; Cady, R. ; Chae, M.J. ; Cheon, B.G. ; Chiba, J. ; Chikawa, M. ; Cho, W.R. ; Fujii, T. ; Fukushima, M. ; Goto, T. ; Hanlon, W. ; Hayashi, Y. ; Hayashida, N. ; Hibino, K. ; Honda, K. ; Ikeda, D. ; Inoue, N. ; Ishii, T. ; Ishimori, R. ; Ito, H. ; Ivanov, D. ; Jui, C.C.H. ; Kadota, K. ; Kakimoto, F. ; Kalashev, O. ; Kasahara, K. ; Kawai, H. ; Kawakami, S. ; Kawana, S. ; Kawata, K. ; Kido, E. ; Kim, H.B. ; Kim, J.H. ; Kim, J.H. ; Kitamura, S. ; Kitamura, Y. ; Kuzmin, V. ; Kwon, Y.J. ; Lan, J. ; Lim, S.I. ; Lundquist, J.P. ; Machida, K. ; Martens, K. ; Matsuda, T. ; Matsuyama, T. ; Matthews, J.N. ; Minamino, M. ; Mukai, Y. ; Myers, I. ; Nagasawa, K. ; Nagataki, S. ; Nakamura, T. ; Nonaka, T. ; Nozato, A. ; Ogio, S. ; Ogura, J. ; Ohnishi, M. ; Ohoka, H. ; Oki, K. ; Okuda, T. ; Ono, M. ; Oshima, A. ; Ozawa, S. ; Park, I.H. ; Pshirkov, M.S. ; Rodriguez, D
2015
-
SCI,SCIE,SCOPUS
학술저널
49-62(14쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
<P><B>Abstract</B></P> <P>Previous measurements of the composition of Ultra-High Energy Cosmic Rays (UHECRs) made by the High Resolution Fly’s Eye (HiRes) and Pierre Auger Observatory (PAO) are seemingly contradict...
<P><B>Abstract</B></P> <P>Previous measurements of the composition of Ultra-High Energy Cosmic Rays (UHECRs) made by the High Resolution Fly’s Eye (HiRes) and Pierre Auger Observatory (PAO) are seemingly contradictory, but utilize different detection methods, as HiRes was a stereo detector and PAO is a hybrid detector. The five year Telescope Array (TA) Middle Drum hybrid composition measurement is similar in some, but not all, respects in methodology to PAO, and good agreement is evident between data and a light, largely protonic, composition when comparing the measurements to predictions obtained with the QGSJetII-03 and QGSJet-01c models. These models are also in agreement with previous HiRes stereo measurements, confirming the equivalence of the stereo and hybrid methods. The data is incompatible with a pure iron composition, for all models examined, over the available range of energies. The elongation rate and mean values of <SUB> X max </SUB> are in good agreement with Pierre Auger Observatory data. This analysis is presented using two methods: data cuts using simple geometrical variables and a new pattern recognition technique.</P>