Observational constraints on the ultrahigh energy cosmic neutrino flux from the second flight of the ANITA experiment

By P. Gorham, P. Allison, B. Baughman, J. Beatty, K. Belov, D. Besson, S. Bevan, W. Binns, C. Chen, P. Chen and 55 more. 2010

199 citations recorded by the source corpus.

The Antarctic Impulsive Transient Antenna (ANITA) completed its second Long Duration Balloon flight in January 2009, with 31 days aloft (28.5 live days) over Antarctica. ANITA searches for impulsive coherent radio Cherenkov emission from 200 to 1200 MHz, arising from the Askaryan charge excess in ultrahigh energy neutrino-induced cascades within Antarctic ice. This flight included significant improvements over the first flight in payload sensitivity, efficiency, and flight trajectory. Analysis of in-flight calibration pulses from surface and subsurface locations verifies the expected sensitivity. In a blind analysis, we find 2 surviving events on a background, mostly anthropogenic, of 0.97{+-}0.42 events. We set the strongest limit to date for 10{sup 18}-10{sup 21} eV cosmic neutrinos, excluding several current cosmogenic neutrino models.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/97b436de2e626d37c29c6ef65f9db4622d2a48d5

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Citations in the corpus

• The Astrophysics of Ultrahigh-Energy Cosmic Rays (2011, background): “The differential limit and the integral flux limit on a pure E−2 spectrum (straight line) are presented for IceCube 22 lines (pale blue, Abbasi et al. 2010), ANITA-II (green, Gorham et al. 2010) and Auger South (red, Abraham et al. 2009a).”
• Cosmogenic neutrinos: parameter space and detectabilty from PeV to ZeV (2010, background): “It is important to underline that many figures in the literature which summarize the range of cosmogenic neutrino fluxes often also include the production of neutrinos at the acceleration site inside the source (e.g. Chen and Hoffman, 2009; Allison et al., 2009; Gorham et al., 2010).”