The Eas Bursts - High Energy Extensive Air Showers Correlated in Time

TL;DR

This paper reports the observation of high-energy extensive air shower bursts occurring in time-correlated series, suggesting a common origin, based on data collected over 250 days at a high mountain installation.

Contribution

It introduces the detection of time-correlated EAS bursts with specific parameters, indicating a potential new phenomenon in high-energy cosmic ray physics.

Findings

Five series of EAS bursts observed over 250 days

Series contain 4 to 9 events with 1-5 minute intervals

Frequency of series exceeds chance fluctuation expectations

Abstract

Bursts of high energy EAS intensity (the series of EAS), following each other in short intervals of time were observed by means of Tien-Shan high mountain installation. For the lower boundary of EAS, uniting in one series, the size Ne= 10**6 (primary energies of the order of 4x10**15 eV) was taken. The condition of amalgamation into one series was the presence of at least two EAS of Ne >10**7. The number of EAS in a series is from 4 to 9 events, with the mean time interval between them 1-5 minutes. Five such series were found in the material treated (approximately 250 days of pure time of the installation run). For each EAS of each series, all the basic parameters are given: observation date and time, age parameter S, galactic coordinates, coordinates of EAS axes relative to the installation center, energy release in the calorimeter and its distance from EAS axes, fitting the Nishimura- Kamata- Greisen (NKG) function. It is essential, that the frequency of the appearing of such series is much higher, than the probability of the occasional fluctuations in the succession of independent EAS. This probably is in favor of the commonality of their origin.