Results from the Anita experiment

Andrea Silvestri, S. W. Barwick, J. J. Beatty, D. Z. Besson, W. R. Binns, B. Cailo, J. M. Clem, A. Connolly, D. F. Cowen, P. F. Dowkontt, M. A. Du Vernois, P. A. Evenson, D. Goldstein, P. W. Gorham, C. L. Hebert, M. H. Israel, J. G. Learned, K. M. Liewer, J. T. Link, S. MatsunoP. Miocinovic, J. Nam, C. J. Naudet, R. Nichol, K. Palladino, M. Rosen, D. Saltzberg, D. Seckel, A. Silvestri, B. T. Stokes, G. S. Varner, F. Wu

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The ANtarctic Impulse Transient Antenna (ANITA) is the first long-duration balloon experiment designed to search and measure the flux of Greisen- Zapsepin-Kuzmin (GZK) neutrinos. We present new limits on neutrinos fluxes of astronomical origin from data collected with the successful launch of a 2- antenna prototype instrument, called ANITA-lite, that circled the Antarctic continent for 18.4 days in January 2004. We performed a search for Ultra- High-Energy (UHE) neutrinos with energies above 3 x 1018 eV. No excess events above the background expectation were observed and a neutrino flux following E-2 spectrum for all neutrino flavors, is limited to Ev-2F < 1.6 × 10-6 GeV cm-2 s-1 sr-1 for 1018.5 eV < Ev < 1023.5 eV at 90% confidence level. The launch of ANITA is scheduled for December 2006. Looking beyond ANITA, we describe a new idea, called ARIANNA (Antarctic Ross Iceshelf ANtenna Neutrino Array), to increase the sensitivity for GZK neutrinos by one order of magnitude better than ANITA.

Original languageEnglish (US)
Title of host publicationThe Science and Culture Series - Astrophysics; International School of Cosmic Ray Astrophysics 15th Course
Subtitle of host publicationAstrophysics at Ultra-High Energies
PublisherWorld Scientific Publishing Co. Pte Ltd
Number of pages11
ISBN (Print)9812790144, 9789812790149
StatePublished - 2007
Event15th Biennial Course on Astrophysics at Ultra-High Energies - Erice, Italy
Duration: Jun 20 2006Jun 27 2006

Publication series

NameThe Science and Culture Series - Astrophysics; International School of Cosmic Ray Astrophysics 15th Course: Astrophysics at Ultra-High Energies


Other15th Biennial Course on Astrophysics at Ultra-High Energies

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics


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