New limits on a diffuse flux of >= 100-EeV cosmic neutrinos
Feb, 2001
12 pages
Published in:
- AIP Conf.Proc. 579 (2001) 1, 177
Contribution to:
- Published: Sep 12, 2001
e-Print:
- astro-ph/0102435 [astro-ph]
DOI:
Experiments:
View in:
Citations per year
Abstract: (AIP)
We report on results from about 30 hours of livetime with the Goldstone Lunar Ultra-high energy neutrino Experiment (GLUE). The experiment searches for ∼10 ns microwave pulses from the lunar regolith, appearing in coincidence at two large radio telescopes separated by about 20 km and linked by optical fiber. The pulses can arise from subsurface electromagnetic cascades induced by interactions of up-coming ∼100 EeV neutrinos in the lunar regolith. A new triggering method implemented after the first 12 hours of livetime has significantly reduced the terrestrial interference background, and we now operate at the thermal noise level. No strong candidates are yet seen. We report on limits implied by this non-detection, based on new Monte Carlo estimates of the efficiency. We also report on preliminary analysis of smaller pulses, where some indications of non-statistical excess may be present.References(20)
Figures(0)