Search for first harmonic modulation in the right ascension distribution of cosmic rays detected at the Pierre Auger Observatory

We present the results of searches for dipolar-type anisotropies in different energy ranges above 2.5 × 10 17 eV with the surface detector array of the Pierre Auger Observatory, reporting on both the phase and the amplitude measurements of the first harmonic modulation in the right-ascension distrib...

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Publicado:	2011
Materias:	Large scale anisotropies Pierre Auger Observatory Ultra-high energy cosmic rays Anisotropy Augers Cosmology Modulation Observatories Amplitude measurements Energy ranges First harmonic Large scale anisotropy Pierre Auger observatory Right ascensions Surface detectors Ultra high-energy cosmic rays Cosmic rays
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09276505_v34_n8_p627_Multitudinario http://hdl.handle.net/20.500.12110/paper_09276505_v34_n8_p627_Multitudinario
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_09276505_v34_n8_p627_Multitudinario
record_format	dspace
spelling	paper:paper_09276505_v34_n8_p627_Multitudinario2025-07-30T18:28:05Z Search for first harmonic modulation in the right ascension distribution of cosmic rays detected at the Pierre Auger Observatory Large scale anisotropies Pierre Auger Observatory Ultra-high energy cosmic rays Anisotropy Augers Cosmology Modulation Observatories Amplitude measurements Energy ranges First harmonic Large scale anisotropy Pierre Auger observatory Right ascensions Surface detectors Ultra high-energy cosmic rays Cosmic rays We present the results of searches for dipolar-type anisotropies in different energy ranges above 2.5 × 10 17 eV with the surface detector array of the Pierre Auger Observatory, reporting on both the phase and the amplitude measurements of the first harmonic modulation in the right-ascension distribution. Upper limits on the amplitudes are obtained, which provide the most stringent bounds at present, being below 2% at 99% C.L. for EeV energies. We also compare our results to those of previous experiments as well as with some theoretical expectations. © 2011 Published by Elsevier B.V. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09276505_v34_n8_p627_Multitudinario http://hdl.handle.net/20.500.12110/paper_09276505_v34_n8_p627_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	Large scale anisotropies Pierre Auger Observatory Ultra-high energy cosmic rays Anisotropy Augers Cosmology Modulation Observatories Amplitude measurements Energy ranges First harmonic Large scale anisotropy Pierre Auger observatory Right ascensions Surface detectors Ultra high-energy cosmic rays Cosmic rays
spellingShingle	Large scale anisotropies Pierre Auger Observatory Ultra-high energy cosmic rays Anisotropy Augers Cosmology Modulation Observatories Amplitude measurements Energy ranges First harmonic Large scale anisotropy Pierre Auger observatory Right ascensions Surface detectors Ultra high-energy cosmic rays Cosmic rays Search for first harmonic modulation in the right ascension distribution of cosmic rays detected at the Pierre Auger Observatory
topic_facet	Large scale anisotropies Pierre Auger Observatory Ultra-high energy cosmic rays Anisotropy Augers Cosmology Modulation Observatories Amplitude measurements Energy ranges First harmonic Large scale anisotropy Pierre Auger observatory Right ascensions Surface detectors Ultra high-energy cosmic rays Cosmic rays
description	We present the results of searches for dipolar-type anisotropies in different energy ranges above 2.5 × 10 17 eV with the surface detector array of the Pierre Auger Observatory, reporting on both the phase and the amplitude measurements of the first harmonic modulation in the right-ascension distribution. Upper limits on the amplitudes are obtained, which provide the most stringent bounds at present, being below 2% at 99% C.L. for EeV energies. We also compare our results to those of previous experiments as well as with some theoretical expectations. © 2011 Published by Elsevier B.V.
title	Search for first harmonic modulation in the right ascension distribution of cosmic rays detected at the Pierre Auger Observatory
title_short	Search for first harmonic modulation in the right ascension distribution of cosmic rays detected at the Pierre Auger Observatory
title_full	Search for first harmonic modulation in the right ascension distribution of cosmic rays detected at the Pierre Auger Observatory
title_fullStr	Search for first harmonic modulation in the right ascension distribution of cosmic rays detected at the Pierre Auger Observatory
title_full_unstemmed	Search for first harmonic modulation in the right ascension distribution of cosmic rays detected at the Pierre Auger Observatory
title_sort	search for first harmonic modulation in the right ascension distribution of cosmic rays detected at the pierre auger observatory
publishDate	2011
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09276505_v34_n8_p627_Multitudinario http://hdl.handle.net/20.500.12110/paper_09276505_v34_n8_p627_Multitudinario
_version_	1840321785013207040

Search for first harmonic modulation in the right ascension distribution of cosmic rays detected at the Pierre Auger Observatory

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