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Title: Demonstrating Agreement between Radio and Fluorescence Measurements of the Depth of Maximum of Extensive Air Showers at the Pierre Auger Observatory

Journal Article · · Physical Review Letters
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We show, for the first time, radio measurements of the depth of shower maximum ( X max ) of air showers induced by cosmic rays that are compared to measurements of the established fluorescence method at the same location. Using measurements at the Pierre Auger Observatory we show full compatibility between our radio and the previously published fluorescence dataset, and between a subset of air showers observed simultaneously with both radio and fluorescence techniques, a measurement setup unique to the Pierre Auger Observatory. Furthermore, we show radio X max resolution as a function of energy and demonstrate the ability to make competitive high-resolution X max measurements with even a sparse radio array. With this, we show that the radio technique is capable of cosmic-ray mass composition studies, both at Auger and at other experiments. Published by the American Physical Society 2024

Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-07CH11359; FG02-99ER41107; SC0011689
OSTI ID:
2279106
Alternate ID(s):
OSTI ID: 2349093
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 2 Vol. 132; ISSN 0031-9007; ISSN PRLTAO
Publisher:
American Physical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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