156 citations · 870 across the 27 of their papers we have counts for
9 papers · 1 filter
Calibration of the LOFAR low-band antennas using the Galaxy and a model of the signal chain
K. Mulrey, A. Bonardi, S. Buitink +15
The LOw-Frequency ARray (LOFAR) is used to make precise measurements of radio emission from extensive air showers, yielding information about the primary cosmic ray. Interpreting t…
Thunderstorm electric fields probed by extensive air showers through their polarized radio emission
T. N. G. Trinh, O. Scholten, A. Bonardi +17
We observe a large fraction of circular polarization in radio emission from extensive air showers recorded during thunderstorms, much higher than in the emission from air showers m…
Realtime processing of LOFAR data for the detection of nano-second pulses from the Moon
T. Winchen, A. Bonardi, S. Buitink +14
The low flux of the ultra-high energy cosmic rays (UHECR) at the highest energies provides a challenge to answer the long standing question about their origin and nature. Even lowe…
Measurement of the circular polarization in radio emission from extensive air showers confirms emission mechanisms
O. Scholten, T. N. G. Trinh, A. Bonardi +16
We report here on a novel analysis of the complete set of four Stokes parameters that uniquely determine the linear and/or circular polarization of the radio signal for an extensiv…
Search for Cosmic Particles with the Moon and LOFAR
T. Winchen, A. Bonardi, S. Buitink +14
The low flux of the ultra-high energy cosmic rays (UHECR) at the highest energies provides a challenge to answer the long standing question about their origin and nature. A signifi…
Timing calibration and spectral cleaning of LOFAR time series data
A. Corstanje, S. Buitink, J. E. Enriquez +10
We describe a method for spectral cleaning and timing calibration of short voltage time series data from individual radio interferometer receivers. It makes use of the phase differ…
Calibrating the absolute amplitude scale for air showers measured at LOFAR
A. Nelles, J. R. Hörandel, T. Karskens +74
Air showers induced by cosmic rays create nanosecond pulses detectable at radio frequencies. These pulses have been measured successfully in the past few years at the LOw Frequency…
Measurement of the cosmic-ray energy spectrum above eV with the LOFAR Radboud Air Shower Array
S. Thoudam, S. Buitink, A. Corstanje +11
The energy reconstruction of extensive air showers measured with the LOFAR Radboud Air Shower Array (LORA) is presented in detail. LORA is a particle detector array located in the…
A method for high precision reconstruction of air shower Xmax using two-dimensional radio intensity profiles
S. Buitink, A. Corstanje, J. E. Enriquez +10
The mass composition of cosmic rays contains important clues about their origin. Accurate measurements are needed to resolve long-standing issues such as the transition from Galact…