30TH INTERNATIONAL COSMIC RAY CONFERENCE Investigations of the lateral extension of radio emission in air showers by LOPES30 measurements
نویسندگان
چکیده
The antenna field of LOPES uses inverted V-shaped dipole antennas to measure radio signals originating from extensive air showers (EAS). The LOPES antennas are measuring in coincidence with the air shower experiment KASCADE-Grande. For roughly one year data in the frequency range from 40–80 MHz were taken, having 30 linearly polarized antennas oriented to East-West. In this data set the East-West polarization only was measured in order to investigate in detail the lateral extension of the radio emission. By using an external source all antennas have an absolute amplitude calibration, i.e. a frequency dependent correction factor allows to reconstruct the electric field strength of the radio emission. For first analyses, in particlular air showers with a high signal-to-noise ratio, data are used to investigate the lateral distribution, which shows an exponential decrease.
منابع مشابه
30TH INTERNATIONAL COSMIC RAY CONFERENCE Operation of LOPES-30 for Polarization Measurements of the Radio Emission of Cosmic Ray Air Showers
The LOPES-30 experiment, located at the site of the air shower experiment KASCADEGrande at Forschungszentrum Karlsruhe, Germany, is an array of 30 dipole antennas set-up to investigate the pulsed radio emission from cosmic ray air showers in the Earth’s atmosphere. After one year of measurements of the East-West polarization by all 30 antennas, recently, the LOPES-30 set-up was reconfigured to ...
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