55 citations · 129 across the 3 of their papers we have counts for
4 papers
APERTIF, a focal plane array for the WSRT
M. A. W. Verheijen, T. A. Oosterloo, W. A. van Cappellen +3
In this paper we describe a focal plane array (FPA) prototype, based on Vivaldi elements, developed for the Westerbork Synthesis Radio Telescope (WSRT) to increase its instantaneou…
Amplitude calibration of a digital radio antenna array for measuring cosmic ray air showers
S. Nehls, A. Hakenjos, M. J. Arts +9
Radio pulses are emitted during the development of air showers, where air showers are generated by ultra-high energy cosmic rays entering the Earth's atmosphere. These nanosecond s…
Aperture Arrays for the SKA: Dense or Sparse?
Robert Braun, Wim van Cappellen
We briefly consider some design aspects of aperture arrays for use in radio astronomy, particularly contrasting the performance of dense and sparse aperture arrays. Recent insights…
Detection and imaging of atmospheric radio flashes from cosmic ray air showers
H. Falcke, W. D. Apel, A. F. Badea
The nature of ultrahigh-energy cosmic rays (UHECRs) at energies >10^20 eV remains a mystery. They are likely to be of extragalactic origin, but should be absorbed within ~50 Mpc th…