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...
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...
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...
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...
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...
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...
