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arXiv, 2013

DOI: 10.48550/arxiv.1307.3473

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IceCube Search for Dark Matter Annihilation in nearby Galaxies and Galaxy Clusters

Journal article published in 2013 by Jcd iaz-Vélez, Cp de los Heros, Mg G. Aartsen, R. Abbasi, Yasser Abdou, Markus Ackermann ORCID, J. Adams, Ja A. Aguilar, M. Ahlers, D. Altmann, J. Auffenberg, X. Bai, M. Baker, Sw W. Barwick, V. Baum and other authors.
This paper is available in a repository.
This paper is available in a repository.

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Abstract

We present the results of a first search for self-annihilating dark matter in nearby galaxies and galaxy clusters using a sample of high-energy neutrinos acquired in 339.8 days of live time during 2009/10 with the IceCube neutrino observatory in its 59-string configuration. The targets of interest include the Virgo and Coma galaxy clusters, the Andromeda galaxy, and several dwarf galaxies. We obtain upper limits on the cross section as a function of the weakly interacting massive particle mass between 300 GeV and 100 TeV for the annihilation into bb̄, W+W-, τ+τ -, μ+μ-, and νν̄. A limit derived for the Virgo cluster, when assuming a large effect from subhalos, challenges the weakly interacting massive particle interpretation of a recently observed GeV positron excess in cosmic rays. © 2013 American Physical Society. ; info:eu-repo/semantics/published