156 citations · 870 across the 27 of their papers we have counts for
26 papers
Investigating double bump air showers with the SKA-Low
V. De Henau, S. Bouma, J. Bray +30
Double-bump showers are a rare class of extensive air showers (EAS) predicted by Monte Carlo simulations. They occur when a high-energy secondary particle, the leading particle, tr…
Reconstructing Air Shower Parameters with MGMR3D
P. Mitra, O. Scholten, T. N. G. Trinh +16
Measuring the radio emission from cosmic ray particle cascades has proven to be a very efficient method to determine their properties such as the mass composition. Efficient modeli…
Determining Atmospheric Electric Fields using MGMR3D
T. N. G. Trinh, O. Scholten, S. Buitink +4
Cosmic-ray particles impinging on the atmosphere induce high-energy particle cascades in air, an Extensive Air Shower (EAS), emitting coherent radio emission. This emission is affe…
The initial stage of cloud lightning imaged in high-resolution
O. Scholten, B. M. Hare, J. Dwyer +21
With LOFAR we have been able to image the development of lightning flashes with meter-scale accuracy and unprecedented detail. We discuss the primary steps behind our most recent l…
Radio emission from negative lightning leader steps reveals inner meter-scale structure
B. M. Hare, O. Scholten, J. Dwyer +19
We use the Low Frequency ARray (LOFAR) to probe the dynamics of the stepping process of negatively-charged plasma channels (negative leaders) in a lightning discharge. We observe t…
Reconstructing air shower parameters with LOFAR using event specific GDAS atmospheres
P. Mitra, A. Bonardi, A. Corstanje +15
The limited knowledge of atmospheric parameters like humidity, pressure, temperature, and the index of refraction has been one of the important systematic uncertainties in reconstr…
On the cosmic-ray energy scale of the LOFAR radio telescope
K. Mulrey, S. Buitink, A. Corstanje +14
Cosmic rays are routinely measured at LOFAR, both with a dense array of antennas and with the LOFAR Radboud air shower Array (LORA) which is an array of plastic scintillators. In t…
Contributions of the LOFAR Cosmic Ray Key Science Project to the 36th International Cosmic Ray Conference (ICRC 2019)
A. Bonardi, S. Buitink, A. Corstanje +15
This is a collection of papers that have been contributed by the LOFAR Cosmic Ray Key Science Project (CRKSP) to the 36th International Cosmic Ray Conference held in Madison, Wisco…
Cosmic Ray Physics with the LOFAR Radio Telescope
T Winchen, A Bonardi, S Buitink +14
The LOFAR radio telescope is able to measure the radio emission from cosmic ray induced air showers with hundreds of individual antennas. This allows for precision testing of the e…
Status of the Lunar Detection Mode for Cosmic Particles of LOFAR
T. Winchen, A. Bonardi, S. Buitink +14
Cosmic particles hitting Earth's moon produce radio emission via the Askaryan effect. If the resulting radio ns-pulse can be detected by radio telescopes, this technique potentiall…
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…
Contributions of the LOFAR Cosmic Ray Key Science Project to the 35th International Cosmic Ray Conference (ICRC 2017)
A. Bonardi, S. Buitink, A. Corstanje +14
Contributions of the LOFAR Cosmic Ray Key Science Project to the 35th International Cosmic Ray Conference (ICRC 2017)
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…
The effect of the atmospheric refractive index on the radio signal of extensive air showers
A. Corstanje, A. Bonardi, S. Buitink +13
For the interpretation of measurements of radio emission from extensive air showers, an important systematic uncertainty arises from natural variations of the atmospheric refractiv…
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…
A large light-mass component of cosmic rays at 10^{17} - 10^{17.5} eV from radio observations
S. Buitink, A. Corstanje, H. Falcke +101
Cosmic rays are the highest energy particles found in nature. Measurements of the mass composition of cosmic rays between 10^{17} eV and 10^{18} eV are essential to understand whet…
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…
Influence of Atmospheric Electric Fields on the Radio Emission from Extensive Air Showers
T. N. G. Trinh, O. Scholten, S. Buitink +15
The atmospheric electric fields in thunderclouds have been shown to significantly modify the intensity and polarization patterns of the radio footprint of cosmic-ray-induced extens…
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…
Probing Atmospheric Electric Fields in Thunderstorms through Radio Emission from Cosmic-Ray-Induced Air Showers
P. Schellart, T. N. G. Trinh, S. Buitink +71
We present measurements of radio emission from cosmic ray air showers that took place during thunderstorms. The intensity and polarization patterns of these air showers are radical…
The radio emission pattern of air showers as measured with LOFAR - a tool for the reconstruction of the energy and the shower maximum
A. Nelles, S. Buitink, A. Corstanje +10
The pattern of the radio emission of air showers is finely sampled with the Low-Frequency ARray (LOFAR). A set of 382 measured air showers is used to test a fast, analytic paramete…