International Journal of High Energy Physics
Volume 1, Issue 4, October 2014, Pages: 49-54
Received: Nov. 25, 2014;
Accepted: Dec. 2, 2014;
Published: Dec. 5, 2014
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Yuri Verbertsky, HEP, E Andronikashvili Institute of Physics under Tbilisi State University, Tbilisi, Georgia
Manana Svanidze, HEP, E Andronikashvili Institute of Physics under Tbilisi State University, Tbilisi, Georgia
Abesalom Iashvili, HEP, E Andronikashvili Institute of Physics under Tbilisi State University, Tbilisi, Georgia
Levan Kakabadze, HEP, E Andronikashvili Institute of Physics under Tbilisi State University, Tbilisi, Georgia
Arrival zenith angle distribution for the Extensive Air Showers (EAS) with a wide range of number of charged particles is studied using the experimental data obtained using the EAS 4-detector array TBS in Tbilisi. The station is a part of the GELATICA net in Georgia (GEorgian Large-area Angle and Time Coincidence Array). This experiment is devoted to the study of possible correlations in the arrival times and directions of separate EAS events over large distances and to the Primary Cosmic Ray energy spectrum investigation at very high energies. It is shown that the distribution function with the exponential dependence of showers’ flux on absorbing atmospheric depth provides a good approximation for the angular distribution despite the existing azimuth anisotropy of array. The dependence of the EAS absorption path estimation on the angular measure cutoff boundary is studied.
Extensive Air Showers’ Arrival Direction Distribution by TBS Array, International Journal of High Energy Physics.
Vol. 1, No. 4,
2014, pp. 49-54.
Greisen K. “Progress in Cosmic Ray Physics,” (J. Wilson, ed.) V. 3 p 7. Moscow, (1958) [Russian translation].
D. Ciampa, R.W. Clay, “The zenith angle distribution of extensive air showers at sea level: A measure of shower development”, J. Phys. G14 (1988) pp 787 792.
Bejl P.F., Bejsembaev R.U., Vildanov N.G., G.Ya. Goryacheva, V.V. Zhukov et al., “Angular Distribution of EAS at N >107 particles” Proc. 28th ICRC. Tsukuba. (2003). 1. p 9-12
Yakovlev V.I., Izv. RAN. Ser. fiz. (2004), V68. p 1630.
A. Iyono, C. Noda, H. Matsumoto, M. Masuda, T. Wada, et al., “Zenith Angle Distribution and Atmospheric Effect for EAS with LAAS experiments” Proc. 30th ICRC Mexico (2008), Vol. 4 (HE part 1), pp 47 50
M.Yu. Zotov, N.N. Kalmykov, G.V. Kulikova, V.P. Sulakov., “On the angular distribution of extensive air showers” arXiv:0910.4298v1 [astro-ph.HE] (2009), pp 1 5
Svanidze Manana, Verbetsky Yuri, Bagaturia Yuri, Javrishvili Ala, Eristavi Neli et al., “Investigation of Extensive Air Showers by means of the Network of the Cosmic Rays Stations in Georgia” GESJ: Physics (2010) No.1(3) pp 14 24.
Manana Svanidze, Yuri Verbetsky, Yuri Bagaturia, Ala Javrishvili, Abesalom Iashvili et al., “First results obtained by the GELATICA Network of the Cosmic Rays Stations in Georgia” GESJ: Physics (2011) No.1(5) pp 84 96.
Svanidze Manana, Verbetsky Yuri, Tskhadadze Edisher, Iashvili Abesalom, Kokorashvili Davit. “Some properties of two cosmic ray stations appertained to the GELATICA Network in Georgia” Proc. 32nd ICRC Beijing (2011) pp 1 5
Hansen S, Jordan T, Kiper T, Claes D, Snow G, et al., “Low Cost Data Acquisition Card for Network Cosmic Ray Detector”, IEEE Trans. Nucl. Sci., (2004), V51, issue 3, pp 926-930
Svanidze M.S., Verbetsky Yu.G., “Improved method of the Extensive Air Shower arrival direction estimation” arXiv:0804.1751 [astro-ph] (2008) pp 1-13
“Manual of the ICAO standard atmosphere”, International Civil Aviation Organization, (1993).