Calculations of low-frequency radio emission by cosmic-ray-induced particle showers

García-Fernández, Daniel; Revenu, B.; Charrier, Didier; Dallier, R.; Escudie, Antony; Martin, L.

doi:10.1103/physrevd.97.103010

Cited by 12 publications

(30 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This larger reach at low frequency has been partially confirmed by EXTASIS [20]. Another important feature at low frequency is the prediction of a pulse created by the coherent deceleration of the shower particles when the shower particles hit the ground, called the sudden death pulse (SDP) [14]. This pulse has not been seen by EXTASIS, although it might be detected by a low-frequency experiment at a higher altitude.…”

Section: Introductionmentioning

confidence: 89%

“…While the direct and image field are expressed in a closed form, the integral in Eq. (14) is not expressable in a closed form in general, and must be computed numerically. Several approximations can be made in order to simplify it.…”

Section: Field Of a Dipole In Two Semi-infinite Media Separated Bmentioning

confidence: 99%

“…This pulse has not been seen by EXTASIS, although it might be detected by a low-frequency experiment at a higher altitude. Besides, in [14,23,24], the SDP has been approximated by the direct emission only, disregarding the effect of the interface. We present in this work a complete approach that includes the effect of the boundary.…”

Section: Introductionmentioning

confidence: 99%

“…In Section III we use the field of a dipole to construct the exact electric field in frequency domain for a particle track inside the same two semi-infinite media. Then, we prove how it reduces to the formula in [14] if there is no boundary, and as a consequence it can be approximated by the ZHS formula [27] in the far field. After that, we compare the complete formula with a decomposition into direct, reflected, and transmitted fields, both for air/soil and air/ice boundaries.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Influence of a planar boundary on the electric field emitted by a particle shower

et al. 2019

Self Cite

View full text Add to dashboard Cite

The radio detection of cosmic rays consists in the estimation of the properties of a primary cosmic ray by observing the electric field emitted by the extensive air shower (EAS) created when the primary cosmic ray enters the atmosphere. This technique is fully operative nowadays and presents a good degree of maturity. In addition, several projects intend to employ this technique for the detection of neutrinos. In order for the technique to be useful, accurate methods for computing the electric field created by a particle shower in the context of a particular experiment must exist. Although current ground-based radio experiments lie on the air-soil interface and some planned experiments on the South Pole envision antennas near the air-ice interface, most of the analytical approaches and Monte Carlo codes used for calculating the electric field either do not take into account the effect of the boundary or calculate the radiation fields only (direct, reflected and transmitted radiation fields). When the particle shower and the antenna are close to the boundary, compared to the observation wavelength, the far-field approximation breaks down, which is the case for the low-frequency EXTASIS experiment, for instance. We present in this work a new formula for calculating the exact field emitted by a particle track in two semi-infinite media separated by a planar boundary. We also explore the validity of the far-field approximation and make some predictions for EAS using a simple shower model.

show abstract

Section: Introductionmentioning

confidence: 89%

Section: Field Of a Dipole In Two Semi-infinite Media Separated Bmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of a planar boundary on the electric field emitted by a particle shower

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…Analysis method for data/simulations comparisonsFor each detected shower, we reconstruct the direction of arrival (DoA) using a plane fit, and using SELFAS (simulation code of the radio signal of cosmic-ray-induced air showers) in its third version (use of a fine description of the atmosphere and improvements to take into account the near field effects)[8,9], a set of simulations is produced: 40 protons showers…”

mentioning

confidence: 99%

Multi-wavelength observation of cosmic-ray air-showers with CODALEMA/EXTASIS

et al. 2019

Self Cite

View full text Add to dashboard Cite

Since 2003, significant efforts have been devoted to the understanding of the radio emission of extensive air shower in the range MHz. Despite some studies led until the early nineties, the [1-10] MHz band has remained unused for 20 years. However, it has been measured by some pioneering experiments that extensive air shower emit a strong electric field in this band and that there is evidence of a large increase in the amplitude of the radio pulse at lower frequencies. The EXTASIS experiment, located within the Nançay Radioastronomy Observatory and supported by the CODALEMA experiment, aims to reinvestigate the [1-10] MHz band, and especially to study the so-called "Sudden Death" contribution, the expected electric field emitted by shower front when hitting the ground level. Currently, EXTASIS has confirmed some results obtained by the pioneering experiments, and tends to bring explanations to the other ones, for instance the role of the underlying atmospheric electric field. Moreover, CODALEMA has demonstrated that in the most commonly used frequency band ([20-80] MHz) the electric field profile of EAS can be well sampled, and contains all the information needed for the reconstruction of EAS: an automatic comparison between the SELFAS3 simulations and data has been developed, allowing us to reconstruct in an almost real time the primary cosmic ray characteristics. *

show abstract

Radio detection of cosmic rays in [1.7–3.7] MHz: The EXTASIS experiment

Charrier

Dallier

Escudie

et al. 2019

Astroparticle Physics

Self Cite

View full text Add to dashboard Cite

Since 2003, significant efforts have been devoted to the understanding of the radio emission of extensive air showers above 20 MHz. Despite some studies led until the early nineties, the band available below 20 MHz has remained unused for 20 years. However, it has been claimed by some pioneering experiments that extensive air showers emit a strong electric field in this band and that there is evidence of a large increase of the radio pulse amplitude with decreasing frequencies. The EXTASIS experiment, located within the Nançay Radioastronomy Observatory and supported by the scintillator array and the autonomous radio stations of the CODALEMA experiment, aims to re-investigate the low-frequency band, and especially to study the so-called "sudden death" contribution, the expected electric field radiated by the shower front when hitting ground level. In this work, we present the instrumental setup of the EXTASIS experiment composed of 7 low-frequency antennas operating in [1.7 − 3.7] MHz and covering approximately 1 km 2 . We report the observation of 18 air showers detected in coincidence in the three instruments, and estimate a detection threshold of 23 ± 4 µV · m −1 from comparisons with detailed SELFAS3 simulations. We also report a strong correlation of the low-frequency signal observation with the atmospheric electric field.

show abstract

Calculations of low-frequency radio emission by cosmic-ray-induced particle showers

Cited by 12 publications

References 36 publications

Influence of a planar boundary on the electric field emitted by a particle shower

Influence of a planar boundary on the electric field emitted by a particle shower

Multi-wavelength observation of cosmic-ray air-showers with CODALEMA/EXTASIS

Radio detection of cosmic rays in [1.7–3.7] MHz: The EXTASIS experiment

Contact Info

Product

Resources

About