Energy Estimation of Cosmic Rays with the Engineering Radio Array of the Pierre Auger Observatory
In: ISSN: 1550-7998, 2016
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Zugriff:
Submitted to Phys. Rev. D ; see paper for full list of authors ; International audience ; 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 80 MHz 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. 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 15.8 MeV 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. 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.
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Energy Estimation of Cosmic Rays with the Engineering Radio Array of the Pierre Auger Observatory
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Autor/in / Beteiligte Person: | Aab, A. ; Samarai, Imen Al ; Aublin, J. ; Letessier-Selvon, A. ; Billoir, P. ; Caccianiga, L. ; Gate, F. ; Ghia, P.L. ; Maller, J. ; Marin, V. ; Revenu, Benoît ; Machado, D.T. ; Avenier, M. ; Berat, C. ; Le Coz, S. ; Lebrun, D. ; Dallier, Richard ; Louedec, K. ; Montanet, F. ; Stutz, A. ; Cordier, A. ; Garcia-Gamez, D. ; Deligny, O. ; Lhenry-Yvon, I. ; Martraire, D. ; Salamida, F. ; Suomijärvi, T. ; Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE) ; Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS) ; Laboratoire SUBATECH Nantes (SUBATECH) ; Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) ; Laboratoire de Physique Subatomique et de Cosmologie (LPSC) ; Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) ; Unité Scientifique de la Station de Nançay (USN) ; Observatoire des Sciences de l'Univers en région Centre (OSUC) ; Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris ; Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris ; Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS) ; Laboratoire de l'Accélérateur Linéaire (LAL) ; Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) ; Institut de Physique Nucléaire d'Orsay (IPNO) ; Pierre, AUGER ; ANR-11-IDEX-0004,SUPER,Sorbonne Universités à Paris pour l'Enseignement et la Recherche(2011) ; ANR-10-LABX-0063,ILP,Institute Lagrange of Paris(2010) ; European Project: 328826,EC:FP7:PEOPLE,FP7-PEOPLE-2012-IEF,AUGER2FUTURE(2013) |
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Zeitschrift: | ISSN: 1550-7998, 2016 |
Veröffentlichung: | HAL CCSD ; American Physical Society, 2016 |
Medientyp: | academicJournal |
DOI: | 10.1103/PhysRevD.93.122005 |
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