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Energy Estimation of Cosmic Rays with the Engineering Radio Array of the Pierre Auger Observatory

Journal Article · · Physical Review D
 [1]
  1. Universitat Siegen (Germany). et al.
The Auger Engineering Radio Array (AERA) is part of the Pierre Auger Observatory and is used to detect the radio emission of cosmic-ray air showers. These observations are compared to the data of the surface detector stations of the Observatory, which provide well-calibrated information on the cosmic-ray energies and arrival directions. The response of the radio stations in the 30 to 80MHz regime has been thoroughly calibrated to enable the reconstruction of the incoming electric field. For the latter, the energy density is determined from the radio pulses at each observer position and is interpolated using a two dimensional function that takes into account signal asymmetries due to interference between the geomagnetic and charge excess emission components. We found that the spatial integral over the signal distribution gives a direct measurement of the energy transferred from the primary cosmic ray into radio emission in the AERA frequency range. We measure 15.8MeV of radiation energy for a 1 EeV air shower arriving perpendicularly to the geomagnetic field. This radiation energy – corrected for geometrical effects – is used as a cosmic-ray energy estimator. Performing an absolute energy calibration against the surface-detector information, we observe that this radio-energy estimator scales quadratically with the cosmic-ray energy as expected for coherent emission. Finally we find an energy resolution of the radio reconstruction of 22% for the data set and 17% for a high-quality subset containing only events with at least five radio stations with signal.
Research Organization:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Organization:
Pierre Auger Collaboration
Grant/Contract Number:
AC02-07CH11359; FG02-99ER41107; SC0011689
OSTI ID:
1221348
Alternate ID(s):
OSTI ID: 1257010
Report Number(s):
FERMILAB-PUB--15-354-AD-AE-CD-TD; arXiv eprint number arXiv:1508.04267
Journal Information:
Physical Review D, Journal Name: Physical Review D Journal Issue: 12 Vol. 93; ISSN PRVDAQ; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (25)

The Giant Radio Array for Neutrino Detection (GRAND): Science and design journal August 2019
Results and Perspectives of the Auger Engineering Radio Array journal January 2017
Simulation of the Radiation Energy Release in Air Showers journal January 2017
The mass composition of cosmic rays measured with LOFAR journal January 2017
Precision study of radio emission from air showers at LOFAR journal January 2017
Radio detection in the multi-messenger context journal January 2019
Reconstructing the cosmic-ray energy from the radio signal measured in one single station journal October 2019
Radio-wave detection of ultra-high-energy neutrinos and cosmic rays journal November 2017
Search for PeVatrons at the Galactic Center using a radio air-shower array at the South Pole journal February 2018
Enhancing the cosmic-ray mass sensitivity of air-shower arrays by combining radio and muon detectors journal April 2019
NuRadioReco: a reconstruction framework for radio neutrino detectors journal June 2019
Antarctic Surface Reflectivity Measurements from the ANITA-3 and HiCal-1 Experiments journal April 2017
Radio detection in the multi-messenger context text January 2018
NuRadioReco: a reconstruction framework for radio neutrino detectors text January 2019
Reconstructing the cosmic-ray energy from the radio signal measured in one single station text January 2019
Radio detection in the multi-messenger context text January 2019
Hybrid Detection of High Energy Showers in Urban Environments journal December 2018
Results and Perspectives of the Auger Engineering Radio Array text January 2016
Search for PeVatrons at the Galactic Center using a radio air-shower array at the South Pole text January 2017
The Giant Radio Array for Neutrino Detection (GRAND): Science and Design text January 2018
NuRadioReco: A reconstruction framework for radio neutrino detectors text January 2019
Enhancing the cosmic-ray mass sensitivity of air-shower arrays by combining radio and muon detectors text January 2019
Simulation of the Radiation Energy Release in Air Showers text January 2017
Search for PeVatrons at the Galactic Center using a radio air-shower array at the South Pole text January 2018
Enhancing the cosmic-ray mass sensitivity of air-shower arrays by combining radio and muon detectors text January 2019

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