@inproceedings{feb146dcb0c649398a4ada49c23cb7cf,
title = "Radio emission from air showers measured with LOFAR",
abstract = "The LOFAR cosmic ray experiment uniquely offers both the high antenna density and low radio frequency interference environment necessary to study the different processes within the air shower development that produce radio frequency emission. A detailed understanding of these processes allows radio emission measurements to be used to derive shower parameters such as Xmax. Here we will discuss the analysis and calibration methods used to reconstruct the full three-dimensional electric field vector at each of the ∼ 2300 antennas spread over an ∼ 4 km2 area in the LOFAR core. We will present the first high-precision measurements of the shape of the wavefront of the radio emission, as well as polarization measurements of the radio emission at different locations on the ground. These are an indicator of the interplay of different emission mechanisms such as Geomagnetic radiation, charge excess and the Askaryan effect, or Cherenkov effects.",
keywords = "Air showers, Cosmic rays, Experiments, LOFAR, Polarization, Radio detection",
author = "\{FOR THE LOFAR COLLABORATION\} and Pim Schellart and Anna Nelles and Arthur Corstanje and Stijn Buitink and Emilio Enriquez and Heino Falcke and Wilfred Frieswijk and H{\"o}randel, \{J{\"o}rg R.\} and Maria Krause and Satyendra Thoudam and Olaf Scholten and \{Ter Veen\}, Sander and \{van Den Akker\}, Martin",
note = "Funding Information: Acknowledgment:We acknowledge financial support from the Netherlands Research School for Astronomy (NOVA), the Samen-werkingsverband Noord-Nederland (SNN) and the Foundation for Fundamental Research on Matter (FOM). LOFAR, the Low Frequency Array designed and constructed by ASTRON, has facilities in several countries, that are owned by various parties (each with their own funding sources), and that are collectively operated by the International LOFAR Telescope (ILT) foundation under a joint scientific policy. Publisher Copyright: {\textcopyright} 2013 Sociedade Brasileira de Fisica. All Rights Reserved.; 33rd International Cosmic Rays Conference, ICRC 2013 ; Conference date: 02-07-2013 Through 09-07-2013",
year = "2013",
language = "British English",
series = "Proceedings of the 33rd International Cosmic Rays Conference, ICRC 2013",
booktitle = "Proceedings of the 33rd International Cosmic Rays Conference, ICRC 2013",
}