Detection and imaging of atmospheric radio flashes from cosmic ray air showers

Falcke, H.; Apel, W. D.; Badea, Anthony; Bähren, L.; Bekk, K.; Bercuci, A.; Bertaina, M.; Biermann, P. L.; Blümer, J.; Bozdog, H.; Brâncuş, I.M.; Buitink, S.; Brüggemann, M.; Buchholz, P.; Butcher, H. R.; Чиавасса, А.; Daumiller, K.; Bruyn, A. G. de; Vos, C. M. de; Pierro, F. Di; Döll, P.; Engel, R.; Gemmeke, H.; Ghia, P. L.; Glasstetter, R.; Grupen, C.; Haungs, A.; Heck, D.; Hörandel, J. R.; Horneffer, A.; Huege, T.; Kampert, K.‐H.; Kant, G. W.; Klein, U.; Kolotaev, Y.; Koopman, Y.; Krömer, O.; Kuijpers, J.; Lafèbre, S.; Maier, G.; Mathes, H. J.; Mayer, H.J.; Milke, J.; Mitrica, B.; Morello, C.; Navarra, G.; Nehls, S.; Nigl, A.; Obenland, R.; Oehlschläger, J.; Ostapchenko, S.; Over, S.; Pepping, H. J.; Petcu, M.; Petrović, J.; Plewnia, S.; Rebel, H.; Risse, A.; Roth, M.; Schieler, H.; Schoonderbeek, G.; Sima, O.; Stümpert, M.; Toma, G.; Trinchero, G.; Ulrich, H.; Valchierotti, S.; Buren, J. van; Cappellen, W. van; Walkowiak, W.; Weindl, A.; Wijnholds, Stefan J.; Wochele, J.; Zabierowski, J.; Zensus, J. A.; Zimmermann, D.

doi:10.1038/nature03614

Cited by 349 publications

(339 citation statements)

References 19 publications

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“…The results of this analysis [15] were that (i) there is an unambiguous association of pulsed radio emission with air showers, and the KASCADE-reconstructed direction is consistent with the source of the radio emission, (ii) the radio field strength correlates very well with the muon number, which in turn correlates well with the primary particle energy, and (iii) the radio field strength correlates clearly with the angle between shower axis and earth's magnetic field (hereafter called geomagnetic angle). With this analysis, the "proof of principle" for radio detection of EAS with modern interferometric methods had been achieved.…”

Section: Lopes10 Resultsmentioning

confidence: 99%

“…As of today, some properties of radio emission from EAS are well understood: The emission is clearly coherent as visible from the approximately linear scaling of field strength with energy seen in both experimental data and simulations [4,15]. Also, the fact that there is a pronounced correlation between the radio field strength and the geomagnetic angle indicates that a geomagnetic emission mechanism must be responsible for the dominant fraction of the emission [4,15,17].…”

Section: The Current Understandingmentioning

confidence: 99%

“…Also, the fact that there is a pronounced correlation between the radio field strength and the geomagnetic angle indicates that a geomagnetic emission mechanism must be responsible for the dominant fraction of the emission [4,15,17].…”

Section: The Current Understandingmentioning

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: Lopes10 Resultsmentioning

confidence: 99%

Section: The Current Understandingmentioning

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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“…As a part of the upgrade a small octagonal cluster, Piccolo, formed by eight scintillator stations spaced 20 m from each other, was integrated to provide an external trigger for the KASCADE and Grande arrays. Several radio (43 − 74 MHz) and microwave (3.4 − 4.2 GHz) antennas were added later, forming the LOPES [6] and the CROME experiments [7], respectively, which were used to explore and open new forms of EAS detection.…”

Section: Experimental Set-upmentioning

confidence: 99%

Cosmic Ray Physics with the KASCADE-Grande Observatory

Arteaga‐Velázquez

Apel

Bekk

et al. 2018

Proceedings of 2016 International Conference on Ultra-High Energy Cosmic Rays (UHECR2016)

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Abstract. The existence of a knee at a few PeV in the all-particle cosmic ray energy spectrum has been well established by several experiments but its physical origin has eluded researches for a long time. It is believed that keys to disentangle the mystery could be found in the spectrum and the composition of cosmic rays between 1 PeV and 1 EeV. A first detailed look into the elemental chemical abundances of cosmic rays in this energy regime was provided by both the KASCADE and the KASCADE-Grande experiments. Their measurements opened the door to a wealth of new data on the subject, which led to the discovery of new structures in the all-particle energy spectrum and the confirmation of knee-like features in the spectra of individual mass groups, as well as the observation of an unexpected ankle-like structure at around 100 PeV in the flux of the light component of cosmic rays. In this contribution, early findings with the KASCADE-Grande experiment will be reviewed and then a short update on the analyses currently performed with the data of the observatory will be presented.

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“…Forty years after the initial discovery of radio emission from extensive air showers [1], the CODALEMA [2] and LOPES [3] experiments have re-ignited very active research activities in the field of radio detection of cosmic ray air showers. Nowadays, the field is in a phase of transition from first-generation experiments covering an area of less than 0.1 km 2 to large-scale arrays of tens of km 2 .…”

Section: Introductionmentioning

confidence: 99%

Advanced functionality for radio analysis in the Offline software framework of the Pierre Auger Observatory

Abreu¹,

Aglietta²,

Ahn³

et al. 2011

Nuclear Instruments and Methods in Physics Research Section A:

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a b s t r a c tThe advent of the Auger Engineering Radio Array (AERA) necessitates the development of a powerful framework for the analysis of radio measurements of cosmic ray air showers. As AERA performs ''radiohybrid'' measurements of air shower radio emission in coincidence with the surface particle detectors and fluorescence telescopes of the Pierre Auger Observatory, the radio analysis functionality had to be incorporated in the existing hybrid analysis solutions for fluorescence and surface detector data. This goal has been achieved in a natural way by extending the existing Auger Offline software framework with radio functionality. In this article, we lay out the design, highlights and features of the radio extension implemented in the Auger Offline framework. Its functionality has achieved a high degree of sophistication and offers advanced features such as vectorial reconstruction of the electric field, advanced signal processing algorithms, a transparent and efficient handling of FFTs, a very detailed simulation of detector effects, and the read-in of multiple data formats including data from various

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Detection and imaging of atmospheric radio flashes from cosmic ray air showers

Cited by 349 publications

References 19 publications

Radio detection of cosmic ray air showers with LOPES

Radio detection of cosmic ray air showers with LOPES

Cosmic Ray Physics with the KASCADE-Grande Observatory

Advanced functionality for radio analysis in the Offline software framework of the Pierre Auger Observatory

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