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dc.contributor.authorAartsen, M.G.-
dc.contributor.authorAbraham, K.-
dc.contributor.authorAckermann, M.-
dc.contributor.authorAdams, J.-
dc.contributor.authorAguilar, J.A.-
dc.contributor.authorAhlers, M.-
dc.contributor.authorAhrens, M.-
dc.contributor.authorAltmann, D.-
dc.contributor.authorAndeen, K.-
dc.contributor.authorAnderson, T.-
dc.contributor.authorAnsseau, I.-
dc.contributor.authorAnton, G.-
dc.contributor.authorArchinger, M.-
dc.contributor.authorArgüelles, C.-
dc.contributor.authorAuffenberg, J.-
dc.contributor.authorAxani, S.-
dc.contributor.authorBai, X.-
dc.contributor.authorBarwick, S.W.-
dc.contributor.authorBaum, V.-
dc.contributor.authorBay, R.-
dc.contributor.authoret al.-
dc.identifier.citationThe Astrophysical Journal: an international review of astronomy and astronomical physics, 2016; 830(2):1-12-
dc.description.abstractIceTop is an air-shower array located on the Antarctic ice sheet at the geographic South Pole. IceTop can detect an astrophysical flux of neutrons from Galactic sources as an excess of cosmic-ray air showers arriving from the source direction. Neutrons are undeflected by the Galactic magnetic field and can typically travel 10 (E/PeV) pc before decay. Two searches are performed using 4 yr of the IceTop data set to look for a statistically significant excess of events with energies above 10 PeV (10¹⁶ eV) arriving within a small solid angle. The all-sky search method covers from −90° to approximately −50° in declination. No significant excess is found. A targeted search is also performed, looking for significant correlation with candidate sources in different target sets. This search uses a higher-energy cut (100 PeV) since most target objects lie beyond 1 kpc. The target sets include pulsars with confirmed TeV energy photon fluxes and high-mass X-ray binaries. No significant correlation is found for any target set. Flux upper limits are determined for both searches, which can constrain Galactic neutron sources and production scenarios.-
dc.description.statementofresponsibilityM.G. Aartsen … S. Robertson … A. Wallace … B.J. Whelan … [et al.] (The ICECUBE Collaboration)-
dc.publisherIOP Publishing-
dc.rights© 2016. The American Astronomical Society. All rights reserved.-
dc.subjectAstroparticle physics; cosmic rays; methods: data analysis-
dc.titleSearch for sources of high-energy neutrons with four years of data from the IceTop detector-
dc.typeJournal article-
Appears in Collections:Aurora harvest 3
Chemistry and Physics publications

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