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Recent results from cosmic-ray measurements with LOFAR
Radboud University Nijmegen, The Netherlands.
Radboud University Nijmegen, The Netherlands ; University Groningen, The Netherlands.
Radboud University Nijmegen, The Netherlands.
Radboud University Nijmegen, The Netherlands.
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2014 (English)In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, ISSN 0168-9002, E-ISSN 1872-9576, Vol. 742, 115-118 p.Article in journal (Refereed) Published
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Abstract [en]

LOFAR, the Low Frequency Array, is currently the world's largest distributed radio telescope observing at frequencies below 240 MHz. LOFAR is measuring cosmic-ray induced air-showers since June 2011 and has collected several hundreds of events with hundreds of antennas per individual event. We present measurements of the radio signal strength as well as high-precision measurements of wavefront curvature and polarization. These will enable us to disentangle the different emission mechanisms at play, such as geomagnetic radiation, charge excess, and Askaryan or Cherenkov effects, leading to a full understanding of the air-shower radio emission. Furthermore we give a first example on how the full complexity of the signal enables radio measurements to be used to study primary particle composition.

Place, publisher, year, edition, pages
2014. Vol. 742, 115-118 p.
Keyword [en]
Astroparticle physics, Cosmic rays, Radio emission
National Category
Astronomy, Astrophysics and Cosmology
Research subject
Physics, Astroparticle Physics
Identifiers
URN: urn:nbn:se:lnu:diva-51552DOI: 10.1016/j.nima.2013.11.086OAI: oai:DiVA.org:lnu-51552DiVA: diva2:915303
Available from: 2016-03-29 Created: 2016-03-29 Last updated: 2016-04-05Bibliographically approved

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Thoudam, Satyendra
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Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Astronomy, Astrophysics and Cosmology

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Citation style
  • apa
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More styles
Language
  • de-DE
  • en-GB
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  • nn-NB
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  • Other locale
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Output format
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