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作 者:SUN Xinxin TAN Youheng YUAN Yukui DONG Yuju YUAN Peng ZHANG Huimin LI Jing WANG Hui HUO Anxiang
机构地区:[1]Institute of High Energy Physics,Academia Sinica,Beijing 100039
出 处:《Chinese Physics Letters》1995年第1期61-64,共4页中国物理快报(英文版)
摘 要:The Beijng Huairou extensive air shower(EAS)array has been operating since March 1988.Using data observed during the period from April 1991 through January 1993,a burst of 12 EAS events were observed within 2-minute interval beginning at 4:41′54〃ante meridiem on December 301991 universal time,while only 2 EAS events on average would have been expected during such time interval.
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