Extension of the Cosmic-Ray Energy Spectrum Beyond the Predicted Greisen-Zatsepin-Kuz'min Cutoff
Extension of the Cosmic-Ray Energy Spectrum Beyond the Predicted Greisen-Zatsepin-Kuz'min Cutoff
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DOI：
10.1103/physrevlett.81.1163
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发表时间：
1998-07
影响因子：
8.6
通讯作者：
M. Takeda;N. Hayashida;K. Honda;N. Inoue;K. Kadota;F. Kakimoto;K. Kamata;S. Kawaguchi;Y. Kawasaki;N. Kawasumi;H. Kitamura;E. Kusano;Y. Matsubara;K. Murakami;M. Nagano;D. Nishikawa;H. Ohoka;N. Sakaki;M. Sasaki;K. Shinozaki;N. Souma;M. Teshima;R. Torii;I. Tsushima;Y. Uchihori;T. Yamamoto;S. Yoshida;H. Yoshii
中科院分区：
文献类型：
--
作者：
M. Takeda;N. Hayashida;K. Honda;N. Inoue;K. Kadota;F. Kakimoto;K. Kamata;S. Kawaguchi;Y. Kawasaki;N. Kawasumi;H. Kitamura;E. Kusano;Y. Matsubara;K. Murakami;M. Nagano;D. Nishikawa;H. Ohoka;N. Sakaki;M. Sasaki;K. Shinozaki;N. Souma;M. Teshima;R. Torii;I. Tsushima;Y. Uchihori;T. Yamamoto;S. Yoshida;H. Yoshii
利用1990年2月至1997年10月的Akeno巨型空气簇射阵列（AGASA）的最新数据，报道了10^{18.5} eV以上的宇宙线能谱。能谱延伸到10^{20} eV以上，最高能量事件和其他事件之间的能隙正在被最近观察到的事件填满。的光谱形状表明，在能量谱中的2.7 K截止的情况下，或可能存在一个新的组件超过2.7 K截止。
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 spectrum extends beyond 10^{20} eV and the energy gap between the highest energy event and the others is being filled up with recently observed events. The spectral shape suggests the absence of the 2.7 K cutoff in the energy spectrum or a possible presence of a new component beyond the 2.7 K cutoff.