First Neutrino Point-Source Results From the 22-String IceCube Detector

Autor: Abbasi, R., Catherine De Clercq, Olbren Depaepe, Daan Hubert, Alfio Rizzo, Daniel Bertrand, Bechet, S., Labare, M.
Přispěvatelé: Elementary Particle Physics
Jazyk: angličtina
Rok vydání: 2009
Předmět:
Zdroj: Vrije Universiteit Brussel
Popis: 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
Databáze: OpenAIRE