2013/09/27 by I. Petrov, Igor Petrov, S. Knurenko +6
Engineering · Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Radio Astronomy Observations and Technology #Radio Wave Propagation Studies #astro-ph.IM
paper · pdf · doi:10.48550/arxiv.1309.7095
Contributions to the 33rd International Cosmic Ray Conference, Rio de Janeiro, Brazil, July 2013
arxiv created 2013/09/27 · arxiv updated 2013/09/30
The paper describes the techniques and method of registration of air shower radio emission at the Yakutsk array of extensive air showers at a frequency of 32 MHz. At this stage, emission registration involves two set of antennas, the distance between them is 500m. One set involves 8 antennas, second - 4 antennas. The antennas are perpendicularly crossed dipoles with radiation pattern North South,West East and raised 1.5 m above the ground. Each set of antennas connected to an industrial PC. The registration requires one of two triggers. First trigger are generated by scintillation detectors of Yakutsk array. Scintillation detectors cover area of 12 km2 and registers air showers with energy more than 1017 eV. The second trigger is generated by Small Cherenkov Array that covers area of 1 km2 and registers air showers with energy 1015 - 5*1017 eV. Small Cherenkov Array is part of Yakutsk array and involve Cherenkov detectors located at a distance of 50, 100, 250 m. For further selection we are using an additional criterion the radio pulse must be localized in the area corresponding to the delay time on first and second triggers. In addition, descriptions of the algorithm and the flowcharts of the program for the air shower selection and further analysis are given. This method registers EAS radio emission with energy 1016 - 1019 eV. With the absolute calibration, the amplitudes of all antennas converted to a single value. Air shower radio emission dependences from zenith angle and shower energy are plotted.