Radio emissions of extensive air showers with energies higher than 5 × 1018 eV at a frequency of 32 MHz according to measurements at the Yakutsk array

• Published in: Bulletin of the Russian Academy of Sciences. Physics Vol. 81; no. 4; pp. 520 - 522
• Main Authors: Knurenko, S. P., Kozlov, V. I., Petrov, Z. E., Petrov, I. S., Pravdin, M. I.
• Format: Journal Article
• Language: English
• Published: New York Allerton Press 01.04.2017
• Subjects: Hadrons; Heavy Ions; Nuclear Physics; Physics; Physics and Astronomy; Proceedings of the 34th National Conference on Cosmic Rays
• ISSN: 1062-8738; 1934-9432
• DOI: 10.3103/S106287381704027X

Results obtained from the measuring the radio emissions from extensive air shower particles with energies higher than 5 × 10 18 eV at a frequency of 32 MHz are presented. A generalized formula is derived to describe the spatial distribution of radio emissions using the main EAS characteristics: energy Е 0 and depth of maximum development of shower Х max . The approximating function describes the data at average and large distances from a shower axis. The ratio of signal amplitudes at distances of 175 m and 725 m is used to determine Х max for an average shower with an energy of 1.54 × 10 19 eV, which in our case is equal to Х max = 769 ± 34 g cm −2 . Within the experimental error, the result for Х max is consistent with data obtained using EAS Cherenkov light.