@Article{PierreAugerCollaborationAbreu+Pastor2012,
author="Pierre Auger Collaboration (Abreu, P. et al
and Pastor, S.",
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",
journal="Astrophysical Journal Letters",
year="2012",
publisher="Iop Publishing Ltd",
volume="755",
number="1",
pages="L4 - 7pp",
optkeywords="astroparticle physics; cosmic rays; neutrinos; telescopes",
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{\textquoteright}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.",
optnote="WOS:000306930700004",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1121), last updated on Thu, 30 May 2013 17:04:37 +0000",
issn="2041-8205",
doi="10.1088/2041-8205/755/1/L4",
opturl="http://arxiv.org/abs/arXiv:1210.3143",
opturl="https://doi.org/10.1088/2041-8205/755/1/L4",
archivePrefix="arXiv",
eprint="arXiv:1210.3143",
language="English"
}