Radio emission from cosmic ray air showers: Simulation results and parametrization

Huege, T.; Falcke, H.

doi:10.1016/j.astropartphys.2005.05.008

Cited by 104 publications

(144 citation statements)

References 11 publications

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“…Results from the analysis of inclined air showers [17] are consistent with the predicted signal polarisation, but only dedicated dual-polarisation measurements as are currently being prepared with LOPES will answer these questions definitely. What is the absolute strength of the emission, and is it consistent with the values predicted by theory [10]? The LOPES30 calibrated measurements will answer this long-standing question soon.…”

Section: The Current Understandingmentioning

confidence: 59%

“…Some important questions have yet to be answered: Are the polarisation characteristics of the emission and the detailed angular correlations as expected by theory [10]? Results from the analysis of inclined air showers [17] are consistent with the predicted signal polarisation, but only dedicated dual-polarisation measurements as are currently being prepared with LOPES will answer these questions definitely.…”

Section: The Current Understandingmentioning

confidence: 99%

“…3). The essence of these elaborate simulations is summarised by a parametrisation formula that can be a useful tool to quickly estimate the strength of radio emission for a particular situation [10]. Recently, we have developed a next-generation Monte Carlo code, replacing the parametrised description of air shower characteristics with a highly realistic CORSIKA [11] based air shower model.…”

Section: Simulationsmentioning

confidence: 99%

“…In a second step, we developed a detailed time-domain Monte Carlo simulation of the emission process [9] predicting the radio emission and its dependence on different air shower parameters with unprecedented detail [10].…”

Section: Simulationsmentioning

confidence: 99%

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Radio detection of cosmic ray air showers with LOPES

Huege

Apel

Asch

et al. 2007

Nuclear Physics B - Proceedings Supplements

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In the last few years, radio detection of cosmic ray air showers has experienced a true renaissance, becoming manifest in a number of new experiments and simulation efforts. In particular, the LOPES project has successfully implemented modern interferometric methods to measure the radio emission from extensive air showers. LOPES has confirmed that the emission is coherent and of geomagnetic origin, as expected by the geosynchrotron mechanism, and has demonstrated that a large scale application of the radio technique has great potential to complement current measurements of ultra-high energy cosmic rays. We describe the current status, most recent results and open questions regarding radio detection of cosmic rays and give an overview of ongoing research and development for an application of the radio technique in the framework of the Pierre Auger Observatory.

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Section: The Current Understandingmentioning

confidence: 59%

Section: The Current Understandingmentioning

confidence: 99%

Section: Simulationsmentioning

confidence: 99%

Section: Simulationsmentioning

confidence: 99%

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Radio detection of cosmic ray air showers with LOPES

Huege

Apel

Asch

et al. 2007

Nuclear Physics B - Proceedings Supplements

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“…The most realistic description of the radio emission is obtained when the complete electromagnetic emission is calculated as a whole, e.g., by an end-point formalism [35]. This approach is followed by the Monte Carlo simulation program REAS3 [36], the latest version of REAS [37,38].…”

Section: Emission Mechanismsmentioning

confidence: 99%

Instruments and Methods for the Radio Detection of High Energy Cosmic Rays

Schröder¹

2012

Springer Theses

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Instruments and Methods for the Radio Detection of High Energy Cosmic RaysCosmic rays at energies above 10 15 eV cannot be measured directly due to the low flux. Instead, the properties of the primary cosmic ray particles (arrival direction, energy, mass) have to be reconstructed from measurements of secondary particles forming an air shower. For this, digital radio antenna arrays, like LOPES at the Karlsruhe Institute of Technology (KIT), are a relatively new instrument. The radio emission mainly originates from the deflection of secondary air shower electrons and positrons in the Earth's magnetic field. The radio technique aims at achieving a similar quality in the reconstruction of air shower parameters as the established Cherenkov or fluorescence light detection methods, which in contrast to the radio technique are limited to dark, moonless nights.The present studies aim to advance the air shower radio detection in technological aspects and analysis methods. The developments are mainly applied to LOPES, but also provide a useful set of tools, which will soon be applied on the analysis of first AERA measurements. AERA is a next generation digital radio array at the Pierre Auger Observatory in Argentina. Moreover, this thesis reflects the recent progress in the understanding of the radio emission by air showers. The main results of the studies are:• A new method for time calibration with a reference beacon has been developed.It allows a time resolution of ∼ 1 ns even with large antenna arrays. This is necessary for digital radio interferometry which improves the signal-to-noise ratio and the reconstruction accuracy of the primary particle properties. This method is essential for the measurement of cosmic rays with LOPES, and is going to be applied at AERA.• A per-event comparison of lateral distributions measured with LOPES and REAS3 simulations reflects a significantly improved understanding of the radio emission mechanisms. For the first time a Monte Carlo simulation of the radio emission by air showers can in average reproduce measured data. A detailed investigation of systematic effects was performed to accurately reconstruct LOPES lateral distributions. In particular, a method has been developed to appropriately treat the influence of radio noise on measured lateral distributions.• It is shown that a conical radio wavefront fits LOPES measurements and REAS3 simulations better than a spherical wavefront, which up to now has been assumed for LOPES beamforming analyses. Furthermore, the atmospheric depth of the shower maximum X max can be reconstructed by determining the opening angle of the conical wavefront. However, due to the small lateral extension of LOPES of about 200 m and the high radio background at KIT, the measurement uncertainty (∆X max ≈ 200 g/cm 2 ) is too large for a per-event reconstruction of the primary mass. This will improve at AERA, but could not be examined in detail because of a delay in the construction. • Eine neue Methode zur Zeitkalibration mit einen Rerefenzsender (Beaco...

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Astronomy with Ultra High‐Energy Particles

Hörandel

2008

Reviews in Modern Astronomy

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Radio emission from cosmic ray air showers: Simulation results and parametrization

Cited by 104 publications

References 11 publications

Radio detection of cosmic ray air showers with LOPES

Radio detection of cosmic ray air showers with LOPES

Instruments and Methods for the Radio Detection of High Energy Cosmic Rays

Astronomy with Ultra High‐Energy Particles

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