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

Abstract

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 withmore » 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.« less

Authors:
 [1]
  1. Universitat Siegen (Germany). et al.
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
Pierre Auger Collaboration
OSTI Identifier:
1221348
Alternate Identifier(s):
OSTI ID: 1257010
Report Number(s):
FERMILAB-PUB-15-354-AD-AE-CD-TD
Journal ID: ISSN 2470-0010; PRVDAQ; arXiv eprint number arXiv:1508.04267; TRN: US1601620
Grant/Contract Number:  
AC02-07CH11359; FR02-04ER41300; FG02-99ER41107; SC0011689
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 93; Journal Issue: 12; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS

Citation Formats

Aab, Alexander. Energy Estimation of Cosmic Rays with the Engineering Radio Array of the Pierre Auger Observatory. United States: N. p., 2016. Web. doi:10.1103/PhysRevD.93.122005.
Aab, Alexander. Energy Estimation of Cosmic Rays with the Engineering Radio Array of the Pierre Auger Observatory. United States. doi:10.1103/PhysRevD.93.122005.
Aab, Alexander. Tue . "Energy Estimation of Cosmic Rays with the Engineering Radio Array of the Pierre Auger Observatory". United States. doi:10.1103/PhysRevD.93.122005. https://www.osti.gov/servlets/purl/1221348.
@article{osti_1221348,
title = {Energy Estimation of Cosmic Rays with the Engineering Radio Array of the Pierre Auger Observatory},
author = {Aab, Alexander},
abstractNote = {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.},
doi = {10.1103/PhysRevD.93.122005},
journal = {Physical Review D},
number = 12,
volume = 93,
place = {United States},
year = {2016},
month = {6}
}

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Cited by: 19 works
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Works referenced in this record:

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    Works referencing / citing this record:

    Enhancing the cosmic-ray mass sensitivity of air-shower arrays by combining radio and muon detectors
    journal, April 2019


    Results and Perspectives of the Auger Engineering Radio Array
    journal, January 2017


    NuRadioReco: a reconstruction framework for radio neutrino detectors
    journal, June 2019


    Results and Perspectives of the Auger Engineering Radio Array
    journal, January 2017


    The mass composition of cosmic rays measured with LOFAR
    journal, January 2017


    Radio detection in the multi-messenger context
    journal, January 2019


    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