Limits on diffuse fluxes of high energy extraterrestrial neutrinos with the AMANDA-B10 detector

Details Limits on diffuse fluxes of high energy extraterrestrial neutrinos with the AMANDA-B10 detector Limits on diffuse fluxes of high energy extraterrestrial neutrinos with the AMANDA-B10 detector

2003-03-11

arxiv.org/abs/astro-ph/0303218v1

Phys.Rev.Lett.90:251101,2003

Astronomy and Astrophysics

Astrophysics

Submitted to Physical Review Letters

Scientific paper

10.1103/PhysRevLett.90.251101

Data from the AMANDA-B10 detector taken during the austral winter of 1997 have been searched for a diffuse flux of high energy extraterrestrial muon-neutrinos, as predicted from, e.g., the sum of all active galaxies in the universe. This search yielded no excess events above those expected from the background atmospheric neutrinos, leading to upper limits on the extraterrestrial neutrino flux. For an assumed E^-2 spectrum, a 90% classical confidence level upper limit has been placed at a level E^2 Phi(E) = 8.4 x 10^-7 GeV cm^-2 s^-1 sr^-1 (for a predominant neutrino energy range 6-1000 TeV) which is the most restrictive bound placed by any neutrino detector. When specific predicted spectral forms are considered, it is found that some are excluded.

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