Journal
JETP LETTERS
Volume 102, Issue 12, Pages 785-788Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0021364015240133
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Funding
- Russian Science Foundation [14-12-01340]
- Russian Science Foundation [14-12-01340] Funding Source: Russian Science Foundation
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The arrival directions of 40 neutrino events with energies a parts per thousand(3)100 TeV, observed by the IceCube experiment, are studied. Their distribution in the Galactic latitude and in the angular distance to the Galactic Center allow searching for the Milky-Way disk and halo-related components, respectively. No statistically significant evidence for the disk component is found, though even 100% disk origin of the flux is allowed at the 90% confidence level. Contrary, the Galactic Center-Anticenter dipole anisotropy, specific for dark-matter decays (annihilation) or for interactions of cosmic rays with the extended halo of the circumgalactic gas, is clearly favored over the isotropic distribution (the probability of fluctuation of the isotropic signal is similar to 2%).
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