AMANDA Observations Constrain the Ultra-High Energy Neutrino Flux

Details AMANDA Observations Constrain the Ultra-High Energy Neutrino Flux AMANDA Observations Constrain the Ultra-High Energy Neutrino Flux

2006-05-03

arxiv.org/abs/astro-ph/0605103v2

Phys.Rev.Lett.97:099901,2006

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.97.099901

A number of experimental techniques are currently being deployed in an effort to make the first detection of ultra-high energy cosmic neutrinos. To accomplish this goal, techniques using radio and acoustic detectors are being developed, which are optimally designed for studying neutrinos with energies in the PeV-EeV range and above. Data from the AMANDA experiment, in contrast, has been used to place limits on the cosmic neutrino flux at less extreme energies (up to ~10 PeV). In this letter, we show that by adopting a different analysis strategy, optimized for much higher energy neutrinos, the same AMANDA data can be used to place a limit competitive with radio techniques at EeV energies. We also discuss the sensitivity of the IceCube experiment, in various stages of deployment, to ultra-high energy neutrinos.

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