Measurement of cosmic rays with LOFAR
Rossetto L, Buitink S, Corstanje A, Enriquez JE, Falcke H, Hörandel JR, Nelles A, Rachen JP, Schellart P, Scholten O, Ter Veen S, Thoudam S, Trinh TN (2016)
Publication Type: Conference contribution
Publication year: 2016
Publisher: Institute of Physics Publishing
Book Volume: 718
Conference Proceedings Title: Journal of Physics: Conference Series
Event location: Torino, ITA
DOI: 10.1088/1742-6596/718/5/052035
Abstract
The LOw Frequency ARay (LOFAR) is a multipurpose radio-antenna array aimed to detect radio signals in the 10 - 240 MHz frequency range, covering a large surface in Northern Europe with a higher density in the Northern Netherlands. Radio emission in the atmosphere is produced by cosmic-ray induced air showers through the interaction of charged particles with the Earth magnetic field. The detection of radio signals allows to reconstruct several properties of the observed cascade. We review here all important results achieved in the last years. We proved that the radio-signal distribution at ground level is described by a two-dimensional pattern, which is well fitted by a double Gaussian function. The radio-signal arrival time and polarization have been measured, thus providing additional information on the extensive air shower geometry, and on the radio emission processes. We also showed that the radio signal reaches ground in a thin, curved wavefront which is best parametrized by a hyperboloid shape centred around the shower axis. Radio emission has also been studied under thunderstorm conditions and compared to fair weather conditions. Moreover, by using a hybrid reconstruction technique, we performed mass composition measurements in the energy range 1017 - 1018 eV.
Authors with CRIS profile
Involved external institutions
Radboud University Nijmegen
Netherlands (NL)
Vrije Universiteit Brussel (VUB)
Belgium (BE)
University of Groningen / Rijksuniversiteit Groningen
Netherlands (NL)
Linnaeus University (LNU) / Linnéuniversitetet
Sweden (SE)
University of California Irvine
United States (USA) (US)
Netherlands (NL)
Vrije Universiteit Brussel (VUB)
Belgium (BE)
University of Groningen / Rijksuniversiteit Groningen
Netherlands (NL)
Linnaeus University (LNU) / Linnéuniversitetet
Sweden (SE)
University of California Irvine
United States (USA) (US)
How to cite
APA:
Rossetto, L., Buitink, S., Corstanje, A., Enriquez, J.E., Falcke, H., Hörandel, J.R.,... Trinh, T.N. (2016). Measurement of cosmic rays with LOFAR. In Marco Regis, Nicolao Fornengo, Hannes-S. Zechlin (Eds.), Journal of Physics: Conference Series. Torino, ITA: Institute of Physics Publishing.
MLA:
Rossetto, L., et al. "Measurement of cosmic rays with LOFAR." Proceedings of the 14th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2015, Torino, ITA Ed. Marco Regis, Nicolao Fornengo, Hannes-S. Zechlin, Institute of Physics Publishing, 2016.
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