23 research outputs found
The IceCube Neutrino Observatory Part III: Cosmic Rays
Papers on cosmic rays submitted to the 33nd International Cosmic Ray
Conference (Rio de Janeiro 2013) by the IceCube Collaboration
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The IceCube Neutrino Observatory Part I: Point Source Searches
Papers on point source searches submitted to the 33nd International Cosmic
Ray Conference (Rio de Janeiro 2013) by the IceCube Collaboration
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The IceCube Neutrino Observatory Part II: Atmospheric and Diffuse UHE Neutrino Searches of All Flavors
Papers on atmospheric and diffuse UHE neutrino searches of all flavors
submitted to the 33nd International Cosmic Ray Conference (Rio de Janeiro 2013)
by the IceCube Collaboration
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The IceCube Neutrino Observatory Part IV: Searches for Dark Matter and Exotic Particles
Papers on searches for Dark Matter and exotic particles submitted to the 33nd
International Cosmic Ray Conference (Rio de Janeiro 2013) by the IceCube
Collaboration
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The IceCube Neutrino Observatory Part VI: Ice Properties, Reconstruction and Future Developments
Papers on ice properties, reconstruction and future developments submitted to
the 33nd International Cosmic Ray Conference (Rio de Janeiro 2013) by the
IceCube Collaboration
Erratum to: Search for non-relativistic magnetic monopoles with IceCube (The European Physical Journal C, (2014), 74, 7, (2938), 10.1140/epjc/s10052-014-2938-8)
In the analyses, published in Ref. [1], the exclusion limits are calculated in dependence of the mean free path of the magnetic monopole - nucleon catalysis interaction
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Multipole analysis of IceCube data to search for dark matter accumulated in the Galactic halo: IceCube Collaboration
Dark matter which is bound in the Galactic halo might self-annihilate and produce a flux of stable final state particles, e.g. high energy neutrinos. These neutrinos can be detected with IceCube, a cubic-kilometer sized Cherenkov detector. Given IceCubeâs large field of view, a characteristic anisotropy of the additional neutrino flux is expected. In this paper we describe a multipole method to search for such a large-scale anisotropy in IceCube data. This method uses the expansion coefficients of a multipole expansion of neutrino arrival directions and incorporates signal-specific weights for each expansion coefficient. We apply the technique to a high-purity muon neutrino sample from the Northern Hemisphere. The final result is compatible with the null-hypothesis. As no signal was observed, we present limits on the self-annihilation cross-section averaged over the relative velocity distribution (Formula Presented.) down to ([Formula Presented.) for a dark matter particle mass of 700â1,000 GeV and direct annihilation into (Formula Presented.). The resulting exclusion limits come close to exclusion limits from Îł-ray experiments, that focus on the outer Galactic halo, for high dark matter masses of a few TeV and hard annihilation channels
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Probing the origin of cosmic rays with extremely high energy neutrinos using the IceCube Observatory
We have searched for extremely high energy neutrinos using data taken with the IceCube detector between May 2010 and May 2012. Two neutrino-induced particle shower events with energies around 1 PeV were observed, as reported previously. In this work, we investigate whether these events could originate from cosmogenic neutrinos produced in the interactions of ultrahigh energy cosmic rays with ambient photons while propagating through intergalactic space. Exploiting IceCube's large exposure for extremely high energy neutrinos and the lack of observed events above 100 PeV, we can rule out the corresponding models at more than 90% confidence level. The model-independent quasidifferential 90% C.L. upper limit, which amounts to E2e+Îœ+Îœ=1.2Ă10-7 GeV cm-2 s-1 sr-1 at 1 EeV, provides the most stringent constraint in the energy range from 10 PeV to 10 EeV. Our observation disfavors strong cosmological evolution of the highest energy cosmic-ray sources such as the Fanaroff-Riley type II class of radio galaxies. © 2013 American Physical Society
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The IceCube Neutrino Observatory Part III: Cosmic Rays
Papers on cosmic rays submitted to the 33nd International Cosmic Ray
Conference (Rio de Janeiro 2013) by the IceCube Collaboration