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The effect of the a...
The effect of the atmospheric refractive index on the radio signal of extensive air showers
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- Corstanje, A. (författare)
- Radboud University Nijmegen, Netherlands
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- Bonardi, A. (författare)
- Radboud University Nijmegen, Netherlands
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- Buitink, S. (författare)
- Radboud University Nijmegen, Netherlands ; Vrije Universiteit Brussel, Belgium
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- Falcke, H. (författare)
- Radboud University Nijmegen, Netherlands ; ASTRON Netherlands Institute for Radio Astronomy, Netherlands ; Nikhef, Sci Pk Amsterdam, NL-1098 XG Amsterdam, Netherlands.;Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany.
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- Horandel, J. R. (författare)
- Radboud University Nijmegen, Netherlands ;Nikhef, Sci Pk Amsterdam, NL-1098 XG Amsterdam, Netherlands.
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- Mitra, R. (författare)
- Vrije Univ Brussel, Inst Astrophys, Pleinlaan 2, B-1050 Brussels, Belgium.
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- Mulrey, K. (författare)
- Vrije Univ Brussel, Inst Astrophys, Pleinlaan 2, B-1050 Brussels, Belgium.
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- Nelles, A. (författare)
- Radboud University Nijmegen, Netherlands ;Nikhef, Sci Pk Amsterdam, NL-1098 XG Amsterdam, Netherlands.;Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA.
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- Rachen, J. P. (författare)
- Radboud University Nijmegen, Netherlands
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- Rossetto, L. (författare)
- Radboud University Nijmegen, Netherlands
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- Schellart, P. (författare)
- Radboud University Nijmegen, Netherlands ;Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA.
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- Scholten, O. (författare)
- Vrije Univ Brussel, Interuniv Inst High Energy, Pleinlaan 2, B-1050 Brussels, Belgium.;Univ Groningen, POB 72, NL-9700 AB Groningen, Netherlands.
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- ter Veen, S. (författare)
- Radboud University Nijmegen, Netherlands
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- Thoudam, Satyendra (författare)
- Linnéuniversitetet,Institutionen för fysik och elektroteknik (IFE),Radboud University Nijmegen, Netherlands
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- Trinh, G. (författare)
- Univ Groningen, POB 72, NL-9700 AB Groningen, Netherlands.
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- Winchen, T. (författare)
- Vrije Univ Brussel, Inst Astrophys, Pleinlaan 2, B-1050 Brussels, Belgium.
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(creator_code:org_t)
- Elsevier, 2017
- 2017
- Engelska.
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Ingår i: Astroparticle physics. - : Elsevier. - 0927-6505 .- 1873-2852. ; 89, s. 23-29
- Relaterad länk:
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http://arxiv.org/pdf...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- For the interpretation of measurements of radio emission from extensive air showers, an important systematic uncertainty arises from natural variations of the atmospheric refractive index n. At a given altitude, the refractivity N = 10(6) (n - 1) can have relative variations on the order of 10% depending on temperature, humidity, and air pressure. Typical corrections to be applied to N are about 4%. Using CoREAS simulations of radio emission from air showers, we have evaluated the effect of varying N on measurements of the depth of shower maximum X-max. For an observation band of 30-80 MHz, a difference of 4% in refractivity gives rise to a systematic error in the inferred X-max between 3.5 and 11 g/cm(2), for proton showers with zenith angles ranging from 15 to 50 degrees. At higher frequencies, from 120 to 250 MHz, the offset ranges from 10 to 22 g/cm(2). These offsets were found to be proportional to the geometric distance to X-max. We have compared the results to a simple model based on the Cherenkov angle. For the 120-250 MHz band, the model is in qualitative agreement with the simulations. In typical circumstances, we find a slight decrease in X-max compared to the default refractivity treatment in CoREAS. While this is within commonly treated systematic uncertainties, accounting for it explicitly improves the accuracy of X-max measurements. (C) 2017 Elsevier B.V. All rights reserved.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- Cosmic rays
- Extensive air showers
- Radio emission
- Atmospheric effects
- Astroparticle Physics
- Astropartikelfysik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Corstanje, A.
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Bonardi, A.
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Buitink, S.
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Falcke, H.
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Horandel, J. R.
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Mitra, R.
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Mulrey, K.
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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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Scholten, O.
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ter Veen, S.
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Thoudam, Satyend ...
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Trinh, G.
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Winchen, T.
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