Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2009-04-13
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
13 pages, 9 figures
Scientific paper
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.
Barnaveli T. T. Jr.
Barnaveli Teimuraz
Chubenko A. P.
Eristavi N. A.
Khaldeeva I. V.
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