Abstract
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 language | English (US) |
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Title of host publication | The Science and Culture Series - Astrophysics; International School of Cosmic Ray Astrophysics 15th Course |
Subtitle of host publication | Astrophysics at Ultra-High Energies |
Publisher | World Scientific Publishing Co. Pte Ltd |
Pages | 213-223 |
Number of pages | 11 |
ISBN (Print) | 9812790144, 9789812790149 |
State | Published - 2007 |
Event | 15th Biennial Course on Astrophysics at Ultra-High Energies - Erice, Italy Duration: Jun 20 2006 → Jun 27 2006 |
Publication series
Name | The Science and Culture Series - Astrophysics; International School of Cosmic Ray Astrophysics 15th Course: Astrophysics at Ultra-High Energies |
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Other
Other | 15th Biennial Course on Astrophysics at Ultra-High Energies |
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Country/Territory | Italy |
City | Erice |
Period | 6/20/06 → 6/27/06 |
All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics