Abstract
The IceCube Neutrino Observatory located at the geographic South Pole was designed to study and discover high energy neutrinos coming from both galactic and extra-galactic astrophysical sources. Track-like events induced by charged-current muon-neutrino interactions close to the IceCube detector give an angular resolution better than 1∘ above TeV energies. We present here the results of searches for point-like astrophysical neutrino sources on the full sky using 6 years of detector livetime, of which three years use the complete IceCube detector. Within 2000 days of detector livetime, IceCube is sensitive to a steady flux substantially below E 2 ∂ϕ/∂E = 10−12 TeV cm−2 s−1 in the northern sky for neutrino energies above 10 TeV.
Highlights
IceCube is a cubic-kilometer neutrino detector installed in the ice at the geographic South Pole [1] between depths of 1450 m and 2450 m
The IceCube Neutrino Observatory located at the geographic South Pole was designed to study and discover high energy neutrinos coming from both galactic and extragalactic astrophysical sources
We present here the results of searches for point-like astrophysical neutrino sources on the full sky using 6 years of detector livetime, of which three years use the complete IceCube detector
Summary
IceCube is a cubic-kilometer neutrino detector installed in the ice at the geographic South Pole [1] between depths of 1450 m and 2450 m. Neutrino reconstruction relies on the optical detection of Cherenkov radiation emitted by secondary particles produced in neutrino interactions in the surrounding ice or the nearby bedrock. Partial detector configurations were operational taking data with 40 strings from April 2008, 59 strings from May 2009, and 79 strings from May 2010 on before IceCube was fully operational in May 2011 using 86 strings. The observation of high-energy astrophysical neutrinos by IceCube using events starting in the detector volume [2], and with up-going muons mainly created in charged-current muon-neutrino interactions outside the detector [3], adds impetus to the searches for astrophysical neutrino sources. We present the results of searches for time-independent neutrino emission using both a scan of the fullsky and a dedicated search using known high-energy -ray objects
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