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Calibration of the ...
Calibration of the LOFAR low-band antennas using the Galaxy and a model of the signal chain
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- Mulrey, K. (author)
- Vrije Univ Brussel, Belgium
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- Bonardi, A. (author)
- Radboud Univ Nijmegen, Netherlands
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- Buitink, S. (author)
- Vrije Univ Brussel, Belgium;Radboud Univ Nijmegen, Netherlands
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- Corstanje, A. (author)
- Radboud Univ Nijmegen, Netherlands
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- Falcke, H. (author)
- Radboud Univ Nijmegen, Netherlands;Nikhef, Netherlands;Netherlands Inst Radio Astron ASTRON, Netherlands
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- Hare, B. M. (author)
- Univ Groningen, Netherlands
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- Horandel, J. R. (author)
- Radboud Univ Nijmegen, Netherlands;Nikhef, Netherlands;Vrije Univ Brussel, Belgium
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- Huege, T. (author)
- Vrije Univ Brussel, Belgium;KIT, Germany
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- Mitra, P. (author)
- Vrije Univ Brussel, Belgium
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- Nelles, A. (author)
- DESY, Germany;Humboldt Univ, Germany
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- Rachen, J. P. (author)
- Radboud Univ Nijmegen, Netherlands
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- Rossetto, L. (author)
- Radboud Univ Nijmegen, Netherlands
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- Schellart, P. (author)
- Radboud Univ Nijmegen, Netherlands;Princeton Univ, USA
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- Scholtene, O. (author)
- Univ Groningen, Netherlands;Vrije Univ Brussel, Belgium
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- ter Veen, S. (author)
- Radboud Univ Nijmegen, Netherlands;Netherlands Inst Radio Astron ASTRON, Netherlands
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- Thoudam, Satyendra (author)
- Linnéuniversitetet,Institutionen för fysik och elektroteknik (IFE),Radboud Univ Nijmegen, Netherlands
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- Trinh, T. N. G. (author)
- Univ Groningen, Netherlands
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- Winchen, T. (author)
- Vrije Univ Brussel, Belgium
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(creator_code:org_t)
- Elsevier, 2019
- 2019
- English.
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In: Astroparticle physics. - : Elsevier. - 0927-6505 .- 1873-2852. ; 111, s. 1-11
- Related links:
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https://bib-pubdb1.d...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- 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 the measured data requires an absolute and frequency-dependent calibration of the LOFAR system response. This is particularly important for spectral analyses, because the shape of the detected signal holds information about the shower development. We revisit the calibration of the LOFAR antennas in the range of 30-80 MHz. Using the Galactic emission and a detailed model of the LOFAR signal chain, we find an improved calibration that provides an absolute energy scale and allows for the study of frequency dependent features in measured signals. With the new calibration, systematic uncertainties of 13% are reached, and comparisons of the spectral shape of calibrated data with simulations show promising agreement. (C) 2019 Elsevier B.V. All rights reserved.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- Radio antenna array
- Calibration
- Air showers
- Astroparticle Physics
- Astropartikelfysik
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Mulrey, K.
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Bonardi, A.
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Buitink, S.
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Corstanje, A.
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Falcke, H.
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Hare, B. M.
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show more...
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Horandel, J. R.
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Huege, T.
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Mitra, P.
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Nelles, A.
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Rachen, J. P.
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Rossetto, L.
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Schellart, P.
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Scholtene, O.
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ter Veen, S.
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Thoudam, Satyend ...
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Trinh, T. N. G.
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Winchen, T.
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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Astroparticle ph ...
- By the university
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Linnaeus University