First Neutrino Point-Source Results From the 22-String IceCube Detector
arXiv:0905.2253 · doi:10.1088/0004-637X/701/1/L47
Abstract
We present new results of searches for neutrino point sources in the northern sky, using data recorded in 2007-08 with 22 strings of the IceCube detector (approximately one-fourth of the planned total) and 275.7 days of livetime. The final sample of 5114 neutrino candidate events agrees well with the expected background of atmospheric muon neutrinos and a small component of atmospheric muons. No evidence of a point source is found, with the most significant excess of events in the sky at 2.2 sigma after accounting for all trials. The average upper limit over the northern sky for point sources of muon-neutrinos with E^-2 spectrum is E^2 Phi_nu_mu < 1.4x10^-11 TeV cm^-2 s^-1, in the energy range from 3 TeV to 3 PeV, improving the previous best average upper limit by the AMANDA-II detector by a factor of two.
5 pages, 4 figures. Updated to match version accepted by ApJL
References in corpus (18)
- The H.E.S.S. survey of the Inner Galaxy in very high-energy gamma-rays
- First Year Performance of The IceCube Neutrino Telescope
- The IceCube Data Acquisition System: Signal Capture, Digitization, and Timestamping
- Variable Very High Energy Gamma-ray Emission from the Microquasar LS I +61 303
- High-energy neutrinos in the context of multimessenger physics
- TeV Gamma-Ray Sources from a Survey of the Galactic Plane with Milagro
- A three-dimensional calculation of atmospheric neutrinos
- Methods for point source analysis in high energy neutrino telescopes
- Uncertainties in Atmospheric Neutrino Fluxes
- Light tracking through ice and water -- Scattering and absorption in heterogeneous media with Photonics
- Detection of Atmospheric Muon Neutrinos with the IceCube 9-String Detector
- Production of gamma rays and neutrinos in the dark jets of the microquasar SS433
- Five years of searches for point sources of astrophysical neutrinos with the AMANDA-II neutrino telescope
- Study of TeV Neutrinos with Upward Showering Muons in Super-Kamiokande
- Estimating the angular resolution of tracks in neutrino telescopes based on a likelihood analysis
- Search for Point Sources of High Energy Neutrinos with Final Data from AMANDA-II
- Galactic discrete sources of high energy neutrinos
- Comment on "Including Systematic Uncertainties in Confidence Interval Construction for Poisson Statistics"
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