ICRC2015

Session

Parallel CR12 Radio

3 Aug 2015, 11:00

World Forum

549. Multi-scale and multi-frequency studies of cosmic ray air shower radio signals at the CODALEMA site

Dr Richard Dallier (SUBATECH - Ecole des Mines de Nantes - CNRS/IN2P3 - Université de Nantes)

03/08/2015, 11:00

CR-EX

Oral contribution

Since 2003, the Nançay Radio Observatory hosts the CODALEMA experiment, dedicated to the radio detection of cosmic ray induced extensive air showers. After several instrumental upgrades, CODALEMA is now composed of: - 57 self-triggering radio detection stations working in the 20-250 MHz band, spread over 1 km$^2$; - an array of 13 scintillators acting as a particle detector; - a compact...

912. The Energy Content of Extensive Air Showers in the Radio Frequency Range of 30-80 MHz

Mr Christian Glaser (RWTH Aachen University)

03/08/2015, 11:15

CR-EX

Oral contribution

At the Auger Engineering Radio Array (AERA) of the Pierre Auger Observatory, we have developed a new method to measure the total amount of energy that gets transferred from the primary cosmic ray into radio emission. We find that this radiation energy is itself an estimator of the cosmic ray energy. It scales quadratically with the cosmic-ray energy, as expected for coherent emission. We...

977. A lateral distribution function for the radio emission of air showers

Anna Nelles (Radboud University Nijmegen)

03/08/2015, 11:30

CR-EX

Oral contribution

The international LOFAR radio telescope has been used now for four years to detect air showers. Its high antenna density has allowed us to measure the subtle features of the radio emission of air showers. Together with air shower simulations, these data have been used to model the detected signals. The not rotational symmetric footprint is described by an analytical function with as few as...

492. Probing atmospheric electric fields in thunderstorms through radio emission from extensive air showers

Gia Trinh (KVI-CART, University of Groningen, The Netherlands)

03/08/2015, 11:45

CR-EX

Oral contribution

Energetic cosmic rays impinging on the atmosphere create a particle avalanche called an extensive air shower. In the leading plasma of this shower electric currents are induced that generate radio waves which have been detected with LOFAR, a large array of simple antennas primarily developed for radio-astronomical observations. LOFAR has observed air showers under fair-weather conditions...

1067. Polarization and radio wavefront of air showers as measured with LOFAR

Arthur Corstanje (Radboud University Nijmegen)

03/08/2015, 12:00

CR-EX

Oral contribution

The LOFAR radio telescope located in the north of the Netherlands offers a high density of omnidirectional radio antennas. In its central part, it consists of over 1100 dual-polarized antennas in an area of 12 km^2, of which nearly 300 are placed in the central ring of 320 m diameter. LOFAR is therefore well suited for detailed studies of the radio signal from air showers, and has been...

502. The Tunka Radio Extension: two years of air-shower measurements

Dmitriy Kostunin (KIT)

03/08/2015, 12:15

CR-EX

Oral contribution

Since its commissioning in autumn 2012, Tunka-Rex, the radio extension of the air-Cherenkov detector Tunka-133, performed two years of air shower measurements. Currently the detector consists of 44 antennas, each connected to air-Cherenkov and scintillator detectors, respectively, placed in the Tunka valley, Siberia. Triggered by these detectors, Tunka-Rex measures the radio signal of...