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Cosmic ray mass composition with LOFAR
Vrije Universiteit Brussel, Belgium.
Radboud University, The Netherlands.
Radboud University, The Netherlands.
Radboud University, The Netherlands;NIKHEF, Science Park Amsterdam, The Netherlands;Netherlands Institute of Radio Astronomy (ASTRON),Thr Netherlands.
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2018 (English)In: 35th International Cosmic Ray Conference — ICRC2017. 10–20 July, 2017. Bexco, Busan, Korea, Sissa Medialab Srl , 2018, article id 499Conference paper, Published paper (Refereed)
Abstract [en]

The LOFAR radio telescope measures the radio emission from extensive air showers with unprecedented precision. In the dense core individual air showers are detected by hundreds of dipole antennas. By fitting the complex radiation pattern to Monte Carlo radio simulation codes we obtain measurements of the atmospheric depth of the shower maximum X max with a precision of < 20 g/cm 2 . This quantity is sensitive to the mass composition of cosmic rays. We discuss the first mass composition results of LOFAR and the improvements that are currently being made to enhance the accuracy of future analysis. Firstly, a more realistic treatment of the atmosphere will decrease the systematic uncertainties due to the atmosphere. Secondly, a series of upgrades to the LOFAR system will lead to increased effective area, duty cycle, and the possibility to extend the composition analysis down to the energy of 10 16.5 eV. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives 4.0 International License (CC BY-NC-ND 4.0).

Place, publisher, year, edition, pages
Sissa Medialab Srl , 2018. article id 499
Series
Proceedings of science, ISSN 1824-8039 ; 301
Keywords [en]
Cosmology, Dipole antennas, Directional patterns (antenna), Monte Carlo methods, Composition analysis, Effective area, Extensive air showers, Mass composition, Measurements of, Radio emission, Simulation code, Systematic uncertainties, Cosmic rays
National Category
Astronomy, Astrophysics and Cosmology
Research subject
Physics, Astroparticle Physics
Identifiers
URN: urn:nbn:se:lnu:diva-85116DOI: 10.22323/1.301.0499Scopus ID: 2-s2.0-85046059030OAI: oai:DiVA.org:lnu-85116DiVA, id: diva2:1336965
Conference
35th International Cosmic Ray Conference — ICRC2017. 10–20 July, 2017. Bexco, Busan, Korea
Note

Conference code: 135186; Export Date: 11 June 2019; Conference Paper

Available from: 2019-07-11 Created: 2019-07-11 Last updated: 2019-09-03Bibliographically approved

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Thoudam, Satyendra

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  • apa
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