Recent results from cosmic-ray measurements with LOFAR

P. Schellart; S. Buitink; A. Corstanje; J. E. Enriquez; H. Falcke; W. Frieswijk; J. R. Hörandel; M. Krause; A. Nelles; O. Scholten; S. Ter Veen; S. Thoudam; M. Van Den Akker

doi:10.1016/j.nima.2013.11.086

Recent results from cosmic-ray measurements with LOFAR

P. Schellart, S. Buitink, A. Corstanje, J. E. Enriquez, H. Falcke, W. Frieswijk, J. R. Hörandel, M. Krause, A. Nelles, O. Scholten, S. Ter Veen, S. Thoudam, M. Van Den Akker

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	British English
Pages (from-to)	115-118
Number of pages	4
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	742
DOIs	https://doi.org/10.1016/j.nima.2013.11.086
State	Published - 1 Apr 2014

Keywords

Astroparticle physics
Cosmic rays
Radio emission

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10.1016/j.nima.2013.11.086

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Schellart, P., Buitink, S., Corstanje, A., Enriquez, J. E., Falcke, H., Frieswijk, W., Hörandel, J. R., Krause, M., Nelles, A., Scholten, O., Ter Veen, S., Thoudam, S., & Van Den Akker, M. (2014). Recent results from cosmic-ray measurements with LOFAR. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 742, 115-118. https://doi.org/10.1016/j.nima.2013.11.086

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title = "Recent results from cosmic-ray measurements with LOFAR",

abstract = "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.",

keywords = "Astroparticle physics, Cosmic rays, Radio emission",

author = "P. Schellart and S. Buitink and A. Corstanje and Enriquez, {J. E.} and H. Falcke and W. Frieswijk and H{\"o}randel, {J. R.} and M. Krause and A. Nelles and O. Scholten and {Ter Veen}, S. and S. Thoudam and {Van Den Akker}, M.",

note = "Funding Information: We acknowledge financial support from the Netherlands Research School for Astronomy (NOVA) , the Samenwerkingsverband Noord-Nederland (SNN) and the Foundation for Fundamental Research on Matter (FOM) . LOFAR, the Low Frequency Array designed and constructed by ASTRON, has facilities in several countries, that are owned by various parties (each with their own funding sources), and that are collectively operated by the International LOFAR Telescope (ILT) foundation under a joint scientific policy.",

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doi = "10.1016/j.nima.2013.11.086",

language = "British English",

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Schellart, P, Buitink, S, Corstanje, A, Enriquez, JE, Falcke, H, Frieswijk, W, Hörandel, JR, Krause, M, Nelles, A, Scholten, O, Ter Veen, S, Thoudam, S & Van Den Akker, M 2014, 'Recent results from cosmic-ray measurements with LOFAR', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 742, pp. 115-118. https://doi.org/10.1016/j.nima.2013.11.086

TY - JOUR

T1 - Recent results from cosmic-ray measurements with LOFAR

AU - Schellart, P.

AU - Buitink, S.

AU - Corstanje, A.

AU - Enriquez, J. E.

AU - Falcke, H.

AU - Frieswijk, W.

AU - Hörandel, J. R.

AU - Krause, M.

AU - Nelles, A.

AU - Scholten, O.

AU - Ter Veen, S.

AU - Thoudam, S.

AU - Van Den Akker, M.

N1 - Funding Information: We acknowledge financial support from the Netherlands Research School for Astronomy (NOVA) , the Samenwerkingsverband Noord-Nederland (SNN) and the Foundation for Fundamental Research on Matter (FOM) . LOFAR, the Low Frequency Array designed and constructed by ASTRON, has facilities in several countries, that are owned by various parties (each with their own funding sources), and that are collectively operated by the International LOFAR Telescope (ILT) foundation under a joint scientific policy.

PY - 2014/4/1

Y1 - 2014/4/1

N2 - 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.

AB - 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.

KW - Astroparticle physics

KW - Cosmic rays

KW - Radio emission

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U2 - 10.1016/j.nima.2013.11.086

DO - 10.1016/j.nima.2013.11.086

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SN - 0168-9002

VL - 742

SP - 115

EP - 118

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

ER -

Recent results from cosmic-ray measurements with LOFAR

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