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Title: Determination of the cascade-curve maximum depth from the muon component on the Yakutsk EAS array

Abstract

The lateral distribution of muons with a threshold E{sub µ} secθ GeV in extensive air showers with E{sub 0} ≥ 10{sup 17} eV over the period of observations on the Yakutsk array from November 2011 to June 2013 has been investigated. It follows from this distribution that the cascade-curve maximum depth X{sub m} in the energy range (1–5) × 10{sup 17} eV increases relatively rapidly, because the cosmic-ray composition changes from iron nuclei dominating at E{sub 0} ≈ 10{sup 17} eV to protons.

Authors:
;  [1]
  1. Russian Academy of Sciences, Shafer Institute of Space Physics and Aeronomy, Yakutsk Research Center, Siberian Branch (Russian Federation)
Publication Date:
OSTI Identifier:
22309105
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 119; Journal Issue: 5; Other Information: Copyright (c) 2014 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ASTROPHYSICS; CASCADE SHOWERS; EXTENSIVE AIR SHOWERS; GEV RANGE; IRON; MUONS; NUCLEI; PROTONS

Citation Formats

Glushkov, A. V., E-mail: a.v.glushkov@ikfia.ysn.ru, and Saburov, A. V.. Determination of the cascade-curve maximum depth from the muon component on the Yakutsk EAS array. United States: N. p., 2014. Web. doi:10.1134/S1063776114110065.
Glushkov, A. V., E-mail: a.v.glushkov@ikfia.ysn.ru, & Saburov, A. V.. Determination of the cascade-curve maximum depth from the muon component on the Yakutsk EAS array. United States. doi:10.1134/S1063776114110065.
Glushkov, A. V., E-mail: a.v.glushkov@ikfia.ysn.ru, and Saburov, A. V.. Sat . "Determination of the cascade-curve maximum depth from the muon component on the Yakutsk EAS array". United States. doi:10.1134/S1063776114110065.
@article{osti_22309105,
title = {Determination of the cascade-curve maximum depth from the muon component on the Yakutsk EAS array},
author = {Glushkov, A. V., E-mail: a.v.glushkov@ikfia.ysn.ru and Saburov, A. V.},
abstractNote = {The lateral distribution of muons with a threshold E{sub µ} secθ GeV in extensive air showers with E{sub 0} ≥ 10{sup 17} eV over the period of observations on the Yakutsk array from November 2011 to June 2013 has been investigated. It follows from this distribution that the cascade-curve maximum depth X{sub m} in the energy range (1–5) × 10{sup 17} eV increases relatively rapidly, because the cosmic-ray composition changes from iron nuclei dominating at E{sub 0} ≈ 10{sup 17} eV to protons.},
doi = {10.1134/S1063776114110065},
journal = {Journal of Experimental and Theoretical Physics},
number = 5,
volume = 119,
place = {United States},
year = {Sat Nov 15 00:00:00 EST 2014},
month = {Sat Nov 15 00:00:00 EST 2014}
}
  • Data from the Yakutsk extensive air shower array for the period 1974-2004 are used to analyze the energy spectrum and anisotropy of primary cosmic rays (PCRs) with energy E{sub 0} {>=} 10{sup 17} eV. The spectra from different regions of the sky are shown to differ in shape. Enhanced and reduced particle fluxes come from the disks of the Galaxy and the Supergalaxy (the Local Supercluster of galaxies) at E{sub 0} {>=} 5 x 10{sup 18} eV and E{sub 0} {<=} (2-3) x 10{sup 18} eV, respectively. This is interpreted as a manifestation of the possible interaction between extragalactic PCRsmore » and the matter of these spatial structures.« less
  • The astrophysical characteristics of primary cosmic rays (PCRs) and the structure of extensive air showers (EASs) with energy E{sub 0} {>=} 10{sup 17} eV are simultaneously analyzed using the Yakutsk EAS array data acquired in the period 1974-2005. Enhanced and reduced particle fluxes are shown to come from the disk of the Supergalaxy (the Local Supercluster of galaxies) at E{sub 0} {>=} 5 x 10{sup 18} eV and E{sub 0} {<=} (2-3) x 10{sup 18}, respectively. The development of air showers with E{sub 0} {>=} (3-5) x 10{sup 18} eV differs significantly from that at lower energies. This is interpretedmore » as a manifestation of the possible interaction between extragalactic PCRs and the matter of this spatial structure.« less
  • We present a method for determining the energy of the primary particle that generates an extensive air shower (EAS) of comic rays based on measuring the total flux of Cherenkov light from the shower. Applying this method to Cherenkov light measurements at the Yakutsk EAS array has allowed us to construct the cosmic ray energy spectrum in the range 10{sup 15} - 3 x 10{sup 19} eV.
  • The arrival directions of primary cosmic ray particles with energies E{sub 0} {>=} 10{sup 17} eV and zenith angles {theta} {<=} 60{sup o} recorded on the Yakutsk array over the period 1974-2009 are analyzed. These events are shown to have different anisotropies in different energy ranges.
  • The arrival directions of primary cosmic ray particles with energies E{sub 0} {>=} 10{sup 19} eV and zenith angles {theta} {<=} 60{sup o} recorded on the Yakutsk array over the period 1974-2009 are analyzed. These events separated by different time intervals are shown to have different global anisotropies.