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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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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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dc.contributor.author The Pierre Auger Collaboration
dc.contributor.author Pastor Carpi, Sergio
dc.date.accessioned 2015-11-03T10:47:48Z
dc.date.available 2015-11-03T10:47:48Z
dc.date.issued 2012
dc.identifier.citation The Pierre Auger Collaboration Pastor Carpi, Sergio 2012 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 Astrophysical Journal Letters 755 1 L4-1 L4-7
dc.identifier.uri http://hdl.handle.net/10550/48004
dc.description.abstract The surface detector array of the Pierre Auger Observatory can detect neutrinos with energy E-nu between 10(17) eV and 10(20) eV from point-like sources across the sky south of +55 degrees and north of -65 degrees 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 similar to 3.5 years of a full surface detector array for the Earth-skimming channel and similar to 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-nu(-2). from a point-like source, 90% confidence level upper limits for k(PS) at the level of approximate to 5x10(-7) and 2.5x10(-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.
dc.language.iso eng
dc.relation.ispartof Astrophysical Journal Letters, 2012, vol. 755, num. 1, p. L4-1-L4-7
dc.subject Física
dc.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
dc.type journal article es_ES
dc.date.updated 2015-11-03T10:47:48Z
dc.identifier.doi 10.1088/2041-8205/755/1/L4
dc.identifier.idgrec 082467
dc.rights.accessRights open access es_ES

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