Anisotropy studies around the galactic centre at EeV energies with the Auger Observatory

Data from the Pierre Auger Observatory are analyzed to search for anisotropies near the direction of the Galactic Centre at EeV energies. The exposure of the surface array in this part of the sky is already significantly larger than that of the fore-runner experiments. Our results do not support pre...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autor principal: Abraham, J.
Formato: JOUR
Materias:
Anisotropies
Cosmic rays
Galactic centre
Anisotropy
Fluorescence
Neutron detectors
Observatories
Fluorescence detectors
Galactic center
Point like flux
Pointing accuracy
Galaxies
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09276505_v27_n4_p244_Abraham
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_09276505_v27_n4_p244_Abraham
record_format dspace
spelling todo:paper_09276505_v27_n4_p244_Abraham2023-10-03T15:46:56Z Anisotropy studies around the galactic centre at EeV energies with the Auger Observatory Abraham, J. Anisotropies Cosmic rays Galactic centre Anisotropy Cosmic rays Fluorescence Neutron detectors Observatories Fluorescence detectors Galactic center Point like flux Pointing accuracy Galaxies Data from the Pierre Auger Observatory are analyzed to search for anisotropies near the direction of the Galactic Centre at EeV energies. The exposure of the surface array in this part of the sky is already significantly larger than that of the fore-runner experiments. Our results do not support previous findings of localized excesses in the AGASA and SUGAR data. We set an upper bound on a point-like flux of cosmic rays arriving from the Galactic Centre which excludes several scenarios predicting sources of EeV neutrons from Sagittarius A. Also the events detected simultaneously by the surface and fluorescence detectors (the 'hybrid' data set), which have better pointing accuracy but are less numerous than those of the surface array alone, do not show any significant localized excess from this direction. © 2006 Elsevier B.V. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09276505_v27_n4_p244_Abraham
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Anisotropies
Cosmic rays
Galactic centre
Anisotropy
Cosmic rays
Fluorescence
Neutron detectors
Observatories
Fluorescence detectors
Galactic center
Point like flux
Pointing accuracy
Galaxies
spellingShingle Anisotropies
Cosmic rays
Galactic centre
Anisotropy
Cosmic rays
Fluorescence
Neutron detectors
Observatories
Fluorescence detectors
Galactic center
Point like flux
Pointing accuracy
Galaxies
Abraham, J.
Anisotropy studies around the galactic centre at EeV energies with the Auger Observatory
topic_facet Anisotropies
Cosmic rays
Galactic centre
Anisotropy
Cosmic rays
Fluorescence
Neutron detectors
Observatories
Fluorescence detectors
Galactic center
Point like flux
Pointing accuracy
Galaxies
description Data from the Pierre Auger Observatory are analyzed to search for anisotropies near the direction of the Galactic Centre at EeV energies. The exposure of the surface array in this part of the sky is already significantly larger than that of the fore-runner experiments. Our results do not support previous findings of localized excesses in the AGASA and SUGAR data. We set an upper bound on a point-like flux of cosmic rays arriving from the Galactic Centre which excludes several scenarios predicting sources of EeV neutrons from Sagittarius A. Also the events detected simultaneously by the surface and fluorescence detectors (the 'hybrid' data set), which have better pointing accuracy but are less numerous than those of the surface array alone, do not show any significant localized excess from this direction. © 2006 Elsevier B.V. All rights reserved.
format JOUR
author Abraham, J.
author_facet Abraham, J.
author_sort Abraham, J.
title Anisotropy studies around the galactic centre at EeV energies with the Auger Observatory
title_short Anisotropy studies around the galactic centre at EeV energies with the Auger Observatory
title_full Anisotropy studies around the galactic centre at EeV energies with the Auger Observatory
title_fullStr Anisotropy studies around the galactic centre at EeV energies with the Auger Observatory
title_full_unstemmed Anisotropy studies around the galactic centre at EeV energies with the Auger Observatory
title_sort anisotropy studies around the galactic centre at eev energies with the auger observatory
url http://hdl.handle.net/20.500.12110/paper_09276505_v27_n4_p244_Abraham
work_keys_str_mv AT abrahamj anisotropystudiesaroundthegalacticcentreateevenergieswiththeaugerobservatory
_version_ 1807320330955390976

Ejemplares similares