A Search for Very High Energy Neutrinos from Active Galactic Nuclei
Abstract
We report the results of a search for neutrino-induced particle cascades using a deep ocean water Cherenkov detector. The effective mass of the detector, a string of seven 40 cm diameter photomultipliers at 5.2 m spacing, is found through simulation analysis to be surprisingly large: greater than 1 megaton of water at incident neutrino energies of 1 PeV. We find no evidence for neutrino-induced cascades in 18.6 hours of observation. Although the limit implied by this observation is the strongest yet for predictions of active galatic nuclei (AGN) neutrinos at energies above 100 TeV, perhaps the more intriguing result is that the power of these techniques can be exploited to test these AGN models in a relatively short time.
Cite
@article{arxiv.astro-ph/9705198,
title = {A Search for Very High Energy Neutrinos from Active Galactic Nuclei},
author = {J. W. Bolesta and H. Bradner and U. Camerini and J. Clem and S. T. Dye and J. George and P. W. Gorham and P. K. F. Grieder and J. Hauptman and T. Hayashino and M. Jaworski and T. Kitamura and S. Kondo and J. G. Learned and R. March and T. Matsumoto and S. Matsuno and K. Mauritz and P. Minkowski and T. Narita and D. J. O'Connor and Y. Ohashi and A. Okada and V. Peterson and V. J. Stenger and S. Uehara and M. Webster and R. J. Wilkes and K. K. Young and A. Yamaguchi},
journal= {arXiv preprint arXiv:astro-ph/9705198},
year = {2008}
}
Comments
contribution to 25th ICRC Durban, South Africa