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    Limit on the ultrahigh-energy neutrino flux from lunar observations with the Parkes radio telescope

    Access Status
    Fulltext not available
    Authors
    Bray, J.
    Ekers, Ronald
    Roberts, P.
    Reynolds, J.
    James, C.
    Phillips, C.
    Protheroe, R.
    McFadden, R.
    Aartsen, M.
    Date
    2015
    Type
    Journal Article
    
    Metadata
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    Citation
    Bray, J. and Ekers, R. and Roberts, P. and Reynolds, J. and James, C. and Phillips, C. and Protheroe, R. et al. 2015. Limit on the ultrahigh-energy neutrino flux from lunar observations with the Parkes radio telescope. Physical Review D - Particles, Fields, Gravitation and Cosmology. 91 (6).
    Source Title
    Physical Review D - Particles, Fields, Gravitation and Cosmology
    DOI
    10.1103/PhysRevD.91.063002
    ISSN
    1550-7998
    School
    Curtin Institute of Radio Astronomy (Engineering)
    URI
    http://hdl.handle.net/20.500.11937/22037
    Collection
    • Curtin Research Publications
    Abstract

    © 2015 American Physical Society. We report a limit on the ultrahigh-energy neutrino flux based on a nondetection of radio pulses from neutrino-initiated particle cascades in the Moon, in observations with the Parkes radio telescope undertaken as part of the LUNASKA project. Because of the improved sensitivity of these observations, which had an effective duration of 127 hours and a frequency range of 1.2-1.5 GHz, this limit extends to lower neutrino energies than those from previous lunar radio experiments, with a detection threshold below 1020eV. The calculation of our limit allows for the possibility of lunar-origin pulses being misidentified as local radio interference, and includes the effect of small-scale lunar surface roughness. The targeting strategy of the observations also allows us to place a directional limit on the neutrino flux from the nearby radio galaxy Centaurus A.

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