The effect of the geomagnetic field on cosmic ray energy estimates and large scale anisotropy searches on data from the Pierre Auger Observatory

We present a comprehensive study of the influence of the geomagnetic field on the energy estimation of extensive air showers with a zenith angle smaller than 60°, detected at the Pierre Auger Observatory. The geomagnetic field induces an azimuthal modulation of the estimated energy of cosmic rays up...

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Autor principal: Multitudinario:501
Formato: JOUR
Materias:
cosmic ray experiments
cosmic rays detectors
ultra high energy cosmic rays
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_14757516_v2011_n11_p_Multitudinario
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_14757516_v2011_n11_p_Multitudinario2023-10-03T16:18:41Z The effect of the geomagnetic field on cosmic ray energy estimates and large scale anisotropy searches on data from the Pierre Auger Observatory Multitudinario:501 cosmic ray experiments cosmic rays detectors ultra high energy cosmic rays We present a comprehensive study of the influence of the geomagnetic field on the energy estimation of extensive air showers with a zenith angle smaller than 60°, detected at the Pierre Auger Observatory. The geomagnetic field induces an azimuthal modulation of the estimated energy of cosmic rays up to the ∼ 2% level at large zenith angles. We present a method to account for this modulation of the reconstructed energy. We analyse the effect of the modulation on large scale anisotropy searches in the arrival direction distributions of cosmic rays. At a given energy, the geomagnetic effect is shown to induce a pseudo-dipolar pattern at the percent level in the declination distribution that needs to be accounted for. © 2011 IOP Publishing Ltd and SISSA. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_14757516_v2011_n11_p_Multitudinario
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic cosmic ray experiments
cosmic rays detectors
ultra high energy cosmic rays
spellingShingle cosmic ray experiments
cosmic rays detectors
ultra high energy cosmic rays
Multitudinario:501
The effect of the geomagnetic field on cosmic ray energy estimates and large scale anisotropy searches on data from the Pierre Auger Observatory
topic_facet cosmic ray experiments
cosmic rays detectors
ultra high energy cosmic rays
description We present a comprehensive study of the influence of the geomagnetic field on the energy estimation of extensive air showers with a zenith angle smaller than 60°, detected at the Pierre Auger Observatory. The geomagnetic field induces an azimuthal modulation of the estimated energy of cosmic rays up to the ∼ 2% level at large zenith angles. We present a method to account for this modulation of the reconstructed energy. We analyse the effect of the modulation on large scale anisotropy searches in the arrival direction distributions of cosmic rays. At a given energy, the geomagnetic effect is shown to induce a pseudo-dipolar pattern at the percent level in the declination distribution that needs to be accounted for. © 2011 IOP Publishing Ltd and SISSA.
format JOUR
author Multitudinario:501
author_facet Multitudinario:501
author_sort Multitudinario:501
title The effect of the geomagnetic field on cosmic ray energy estimates and large scale anisotropy searches on data from the Pierre Auger Observatory
title_short The effect of the geomagnetic field on cosmic ray energy estimates and large scale anisotropy searches on data from the Pierre Auger Observatory
title_full The effect of the geomagnetic field on cosmic ray energy estimates and large scale anisotropy searches on data from the Pierre Auger Observatory
title_fullStr The effect of the geomagnetic field on cosmic ray energy estimates and large scale anisotropy searches on data from the Pierre Auger Observatory
title_full_unstemmed The effect of the geomagnetic field on cosmic ray energy estimates and large scale anisotropy searches on data from the Pierre Auger Observatory
title_sort effect of the geomagnetic field on cosmic ray energy estimates and large scale anisotropy searches on data from the pierre auger observatory
url http://hdl.handle.net/20.500.12110/paper_14757516_v2011_n11_p_Multitudinario
work_keys_str_mv AT multitudinario501 theeffectofthegeomagneticfieldoncosmicrayenergyestimatesandlargescaleanisotropysearchesondatafromthepierreaugerobservatory
AT multitudinario501 effectofthegeomagneticfieldoncosmicrayenergyestimatesandlargescaleanisotropysearchesondatafromthepierreaugerobservatory
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