Guaranteed and prospective Galactic TeV neutrino sources

Recent observations, particularly from the HESS Collaboration, have revealedrich Galactic populations of TeV gamma-ray sources, including a collectionunseen in other wavelengths. Many of these gamma-ray spectra are well measuredup to ~10 TeV, where low statistics make observations by air Cerenkovtelescopes difficult. To understand these mysterious sources, especially atmuch higher energies--where a cutoff should eventually appear--new techniquesare needed. We point out the following: (1) For a number of sources, it is verylikely that pions, and hence TeV neutrinos, are produced; (2) As a generalpoint, neutrinos should be a better probe of the highest energies than gammarays, due to increasing detector efficiency; and (3) For several specificsources, the detection prospects for km^3 neutrino telescopes are very good,about 1-10 events/year, with low atmospheric neutrino background rates abovereasonable energy thresholds. Such signal rates, as small as they may seem,will allow neutrino telescopes to powerfully discriminate between models forthe Galactic TeV sources, with important consequences for our understanding ofcosmic-ray production.Comment: 12 pages, 5 figures; minor changes to match published versio