Search for point-like sources of ultra-high energy neutrinos at the Pierre Auger Observatory and improved limit on the diffuse flux of tau neutrinos

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The surface detector array of the Pierre Auger Observatory can detect neutrinos with energy E ν between 10 17 eV and 10 20 eV from point-like sources across the sky south of +55° and north of -65° declinations. A search has been performed for highly inclined extensive air showers produced by the int...

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Autor principal: Multitudinario:510
Formato: JOUR
Materias:
astroparticle physics
cosmic rays
neutrinos
telescopes
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_20418205_v755_n1_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_20418205_v755_n1_p_Multitudinario2023-10-03T16:38:01Z Search for point-like sources of ultra-high energy neutrinos at the Pierre Auger Observatory and improved limit on the diffuse flux of tau neutrinos Multitudinario:510 astroparticle physics cosmic rays neutrinos telescopes The surface detector array of the Pierre Auger Observatory can detect neutrinos with energy E ν between 10 17 eV and 10 20 eV from point-like sources across the sky south of +55° and north of -65° declinations. A search has been performed for highly inclined extensive air showers produced by the interaction of neutrinos of all flavors in the atmosphere (downward-going neutrinos), and by the decay of tau leptons originating from tau neutrino interactions in Earth's crust (Earth-skimming neutrinos). No candidate neutrinos have been found in data up to 2010 May 31. This corresponds to an equivalent exposure of ∼3.5years of a full surface detector array for the Earth-skimming channel and ∼2 years for the downward-going channel. An improved upper limit on the diffuse flux of tau neutrinos has been derived. Upper limits on the neutrino flux from point-like sources have been derived as a function of the source declination. Assuming a differential neutrino flux k PS E -2 ν from a point-like source, 90% confidence level upper limits for k PS at the level of ≈5 × 10 -7 and 2.5 × 10 -6 GeV cm -2 s -1 have been obtained over a broad range of declinations from the searches for Earth-skimming and downward-going neutrinos, respectively. © 2012 The American Astronomical Society. 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_20418205_v755_n1_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 astroparticle physics
cosmic rays
neutrinos
telescopes
spellingShingle astroparticle physics
cosmic rays
neutrinos
telescopes
Multitudinario:510
Search for point-like sources of ultra-high energy neutrinos at the Pierre Auger Observatory and improved limit on the diffuse flux of tau neutrinos
topic_facet astroparticle physics
cosmic rays
neutrinos
telescopes
description The surface detector array of the Pierre Auger Observatory can detect neutrinos with energy E ν between 10 17 eV and 10 20 eV from point-like sources across the sky south of +55° and north of -65° declinations. A search has been performed for highly inclined extensive air showers produced by the interaction of neutrinos of all flavors in the atmosphere (downward-going neutrinos), and by the decay of tau leptons originating from tau neutrino interactions in Earth's crust (Earth-skimming neutrinos). No candidate neutrinos have been found in data up to 2010 May 31. This corresponds to an equivalent exposure of ∼3.5years of a full surface detector array for the Earth-skimming channel and ∼2 years for the downward-going channel. An improved upper limit on the diffuse flux of tau neutrinos has been derived. Upper limits on the neutrino flux from point-like sources have been derived as a function of the source declination. Assuming a differential neutrino flux k PS E -2 ν from a point-like source, 90% confidence level upper limits for k PS at the level of ≈5 × 10 -7 and 2.5 × 10 -6 GeV cm -2 s -1 have been obtained over a broad range of declinations from the searches for Earth-skimming and downward-going neutrinos, respectively. © 2012 The American Astronomical Society. All rights reserved.
format JOUR
author Multitudinario:510
author_facet Multitudinario:510
author_sort Multitudinario:510
title Search for point-like sources of ultra-high energy neutrinos at the Pierre Auger Observatory and improved limit on the diffuse flux of tau neutrinos
title_short Search for point-like sources of ultra-high energy neutrinos at the Pierre Auger Observatory and improved limit on the diffuse flux of tau neutrinos
title_full Search for point-like sources of ultra-high energy neutrinos at the Pierre Auger Observatory and improved limit on the diffuse flux of tau neutrinos
title_fullStr Search for point-like sources of ultra-high energy neutrinos at the Pierre Auger Observatory and improved limit on the diffuse flux of tau neutrinos
title_full_unstemmed Search for point-like sources of ultra-high energy neutrinos at the Pierre Auger Observatory and improved limit on the diffuse flux of tau neutrinos
title_sort search for point-like sources of ultra-high energy neutrinos at the pierre auger observatory and improved limit on the diffuse flux of tau neutrinos
url http://hdl.handle.net/20.500.12110/paper_20418205_v755_n1_p_Multitudinario
work_keys_str_mv AT multitudinario510 searchforpointlikesourcesofultrahighenergyneutrinosatthepierreaugerobservatoryandimprovedlimitonthediffusefluxoftauneutrinos
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