A shape of charged particle lateral distribution in individual EAS events with energy above 10^19 eV arriving from different celestial regions

TL;DR

This paper analyzes the lateral distribution of charged particles in ultra-high-energy cosmic ray events, comparing different parametrization methods for events from various celestial regions to understand their characteristics.

Contribution

It introduces a comparative analysis of two parametrization methods for the lateral distribution function in individual EAS events above 10^19 eV from different celestial regions.

Findings

Different LDF parameters observed for events from various celestial regions

Comparison shows variations in lateral distribution shapes based on arrival directions

Methodology enables detailed characterization of EAS for high-energy cosmic rays

Abstract

A shape of lateral distribution for charged particles in events with energy above 10^19eV is considered. Two methods were used for individual LDF parametrization. In the first approach, the index of power was determined for generalized Greisen-Linsley approximation. In second, mean square radius of the shower was determined for approximation proposed by Lagutin et al. Comparison of resulted parameters is presented for individual events arrived from different celestial regions -- Galactic planes and the region with increased flux of particles with E(0)>=10^19eV (according to Yakutsk array): 1.7h-3.7h right ascension; 45-60 degrees declination.