Limit on the ultrahigh-energy cosmic-ray flux with the Westerbork synthesis radio telescope

Ter Veen S.; Buitink S.; Falcke H.James C.W.Mevius M.Scholten O.Singh K.Stappers B.De Vries K.D.

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Limit on the ultrahigh-energy cosmic-ray flux with the Westerbork synthesis radio telescope

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A particle cascade (shower) in a dielectric, for example, as initiated by an ultra-high-energy cosmic ray, will have an excess of electrons which will emit coherent ?erenkov radiation, known as the Askaryan effect. In this work we study the case in which such a particle shower occurs in a medium just below its surface. We show, for the first time, that the radiation transmitted through the surface is independent of the depth of the shower below the surface when observed from far away, apart from trivial absorption effects. As a direct application we use the recent results of the NuMoon project, where a limit on the neutrino flux for energies above 1022eV was set using the Westerbork Synthesis Radio Telescope by measuring pulsed radio emission from the Moon, to set a limit on the flux of ultra-high-energy cosmic rays.

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《Physical review, D. Particles, fields, gravitation, and cosmology》 |2010年第1期|103014-1-103014-8|共8页
作者
Ter Veen S.; Buitink S.; Falcke H.James C.W.Mevius M.Scholten O.Singh K.Stappers B.De Vries K.D.;
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作者单位

Kernfysisch Versneller Instituut, University of Groningen, 9747 AA, Groningen, Netherlands;

Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom;

Department of Astrophysics, IMAPP, Radboud University Nijmegen, 6500 GL Nijmegen, NetherlandsLawrence Berkeley National Laboratory, Berkeley, CA 94720, United States;

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中图分类粒子物理学;
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Limit on the ultrahigh-energy cosmic-ray flux with the Westerbork synthesis radio telescope

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