title: Improved flux limits for neutrinos with energies above 10(22) eV from observations with the Westerbork Synthesis Radio Telescope.
abstract: Particle cascades initiated by ultrahigh energy neutrinos in the lunar regolith will emit an electromagnetic pulse with a time duration of the order of nanoseconds through a process known as the Askaryan effect. It has been shown that in an observing window around 150 MHz there is a maximum chance for detecting this radiation with radio telescopes commonly used in astronomy. In 50 h of observation time with the Westerbork Synthesis Radio Telescope array we have set a new limit on the flux of neutrinos, summed over all flavors, with energies in excess of 4x10(22) eV.
authors.affiliation: Kernfysisch Versneller Instituut, University of Groningen, 9747 AA, Groningen, The Netherlands.
authors.forename: O
authors.initials: O
authors.lastname: Scholten
authors.forename: S
authors.initials: S
authors.lastname: Buitink
authors.forename: J
authors.initials: J
authors.lastname: Bacelar
authors.forename: R
authors.initials: R
authors.lastname: Braun
authors.forename: A G
authors.initials: AG
authors.lastname: de Bruyn
authors.forename: H
authors.initials: H
authors.lastname: Falcke
authors.forename: K
authors.initials: K
authors.lastname: Singh
authors.forename: B
authors.initials: B
authors.lastname: Stappers
authors.forename: R G
authors.initials: RG
authors.lastname: Strom
authors.forename: R
authors.initials: R
authors.lastname: al Yahyaoui