Publication
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.contributor.author | Pierre Auger collaboration (510 authors) | |
| dc.contributor.author | Abreu, P. | |
| dc.contributor.author | Andringa, S. | |
| dc.contributor.author | Assis, P. | |
| dc.contributor.author | Brogueira, P. | |
| dc.contributor.author | Cazon, L. | |
| dc.contributor.author | Conceicao, R. | |
| dc.contributor.author | Diogo, F. | |
| dc.contributor.author | Espadanal, J. | |
| dc.contributor.author | Goncalves, P. | |
| dc.contributor.author | Pimenta, M. | |
| dc.contributor.author | Santo, C.E. | |
| dc.contributor.author | Santos, E. | |
| dc.contributor.author | Tome, B. | |
| dc.date.accessioned | 2019-02-03T20:56:50Z | |
| dc.date.available | 2019-02-03T20:56:50Z | |
| dc.date.issued | 2012 | |
| dc.date.updated | 2019-02-03T20:56:50Z | |
| dc.description.abstract | The Surface Detector array of the Pierre Auger Observatory can detect neutrinos with energy between 10^17 eV and 10^20 eV from point-like sources across the sky south of +55 deg and north of -65 deg declinations. A search has been performed for highly inclined extensive air showers produced by the interaction of neutrinos of all flavours in the atmosphere (downward-going neutrinos), and by the decay of tau leptons originating from tau neutrinos interactions in the 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 ~3.5 years 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 from a point-like source, 90% C.L. upper limits for k_PS at the level of ~5 x 10^-7 and 2.5 x 10^-6 GeV cm^-2 s^-1 have been obtained over a broad range of declinations from the searches of Earth-skimming and downward-going neutrinos, respectively. | |
| dc.description.version | Peer Reviewed | |
| dc.identifier | Astrophys.J. 755 (2012) L4; DOI 10.1088/2041-8205/755/1/L4 | |
| dc.identifier.uri | http://dx.doi.org/10.1088/2041-8205/755/1/L4 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/26257 | |
| dc.language.iso | eng | |
| 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 | |
| dspace.entity.type | Publication | |
| rcaap.rights | openAccess | pt |
| rcaap.type | article |