Measurement of the radiation energy in the radio signal of extensive air showers as a universal estimator of cosmic-ray energy

0464047 - FZÚ 2021 RIV US eng J - Journal Article
Aab, A. - Abreu, P. - Aglietta, M. - Blažek, Jiří - Boháčová, Martina - Chudoba, Jiří - Ebr, Jan - Mandát, Dušan - Nečesal, Petr - Palatka, Miroslav - Pech, Miroslav - Prouza, Michael - Řídký, Jan - Schovánek, Petr - Trávníček, Petr - Vícha, Jakub … Total 449 authors
Measurement of the radiation energy in the radio signal of extensive air showers as a universal estimator of cosmic-ray energy.
Physical Review Letters. Roč. 116, č. 24 (2016), s. 1-9, č. článku 241101. ISSN 0031-9007. E-ISSN 1079-7114
R&D Projects: GA MŠMT(CZ) LG13007; GA MŠMT(CZ) 7AMB14AR005; GA ČR(CZ) GA14-17501S; GA MŠMT LM2015038
Institutional support: RVO:68378271
Keywords : Pierre Auger Observatory * detector * cosmic rays * air showers
OECD category: Particles and field physics
Impact factor: 8.462, year: 2016
Method of publishing: Limited access
https://doi.org/10.1103/PhysRevLett.116.241101

We measure the energy emitted by extensive air showers in the form of radio emission in the
frequency range from 30 to 80 MHz. Exploiting the accurate energy scale of the Pierre Auger Observatory, we obtain a radiation energy of 15.8 0.7ðstatÞ 6.7ðsystÞ MeV for cosmic rays with an energy of 1 EeV arriving perpendicularly to a geomagnetic field of 0.24 G, scaling quadratically with the cosmic-ray energy.
A comparison with predictions from state-of-the-art first-principles calculations shows agreement
with our measurement. The radiation energy provides direct access to the calorimetric energy in the electromagnetic cascade of extensive air showers. Comparison with our result thus allows the direct
calibration of any cosmic-ray radio detector against the well-established energy scale of the Pierre Auger Observatory.
Permanent Link: http://hdl.handle.net/11104/0263112