Possible Observation of a Burst of Cosmic-Ray Events in the Form of Extensive Air Showers

Abstract

A series or burst of 32 extensive air showers of estimated mean energy 3×${10}^{15}$ eV was observed within a 5-min time interval beginning at 9:55 A.M. (CST) on 20 January 1981 in Winnipeg, Canada. This observation was the only one of its kind during an experiment which recorded 150 000 such showers in a period of 18 months between October 1980 and April 1982.