Extremely energetic cosmic neutrinos: Opportunities for astrophysics, particle physics, and cosmology

Abstract

Existing and planned observatories for cosmic neutrinos open up a huge window in energy from 10^7 to 10^17 GeV. Here, we discuss in particular the possibilities to use extremely energetic cosmic neutrinos as a diagnostic of astrophysical processes, as a tool for particle physics beyond the Standard Model, and as a probe of cosmology.

Comments: 10 pages, 7 figures, ws-procs9x6.cls, talk presented at the ARENA Workshop, DESY, Zeuthen, Germany, May 17-19, 2005