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Measurement of cosmic rays with LOFAR
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- Rossetto, L. (author)
- Radboud Univ Nijmegen, Netherlands
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- Buitink, S. (author)
- Vrije Univ Brussel, Belgium
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- Corstanje, A. (author)
- Radboud Univ Nijmegen, Netherlands
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- (creator_code:org_t)
- 2016-06-09
- 2016
- English.
- In: XIV INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS (TAUP 2015), PTS 1-7. - : Institute of Physics Publishing (IOPP).
- Conference paper (peer-reviewed)
Abstract
Subject headings
Close
- 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 10(17) - 10(18) eV.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- Astroparticle Physics
- Astropartikelfysik
Publication and Content Type
- ref (subject category)
- kon (subject category)
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- Rossetto, L.
- Buitink, S.
- Corstanje, A.
- Enriquez, J. E.
- Falcke, H.
- Horandel, J. R.
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- Nelles, A.
- Rachen, J. P.
- Schellart, P.
- Scholten, O.
- ter Veen, S.
- Thoudam, Satyend ...
- Trinh, T. N. G.
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- Linnaeus University
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