Measuring a Cherenkov ring in the radio emission from air showers at 110-190 MHz with LOFAR

  title={Measuring a Cherenkov ring in the radio emission from air showers at 110-190 MHz with LOFAR},
  author={Pim Schellart and Stijn Buitink and Arthur Corstanje and Krijn D. de Vries and Jesus Emilio Enriquez and Heino Falcke and Wilfred Frieswijk and J{\"o}rg R. H{\"o}randel and O Scholten and Sander ter Veen and Satyendra Thoudam and Matthijs van Akker and Johan Anderson and Ashish Asgekar and Marinus Jan Bentum and Gregorio Bernardi and Pj Best and Jesse Bregman and Frank Breitling and Joseph Broderick and W. N. Brouw and Marcus Br{\"u}ggen and Harvey Raymond Butcher and Benedetta Ciardi and Adam Deller and S. Duscha and Jochen Eisl{\"o}ffel and Richard A. Fallows and Michael A. Garrett and A. W. Gunst and T. E. Hassall and G. Heald and Andreas Horneffer and Marco Iacobelli and Eva Juette and Aris Karastergiou and Masanori Kuniyoshi and Gerard H. Kuper and Peter Maat and Heinz Paas and Mamta Pandey-Pommier and Antonis G. Polatidis and Wolfgang Dr Reich and H. J. A. R{\"o}ttgering and Anna M. M. Scaife and Matthias Steinmetz and Stefan J. Wijnholds and Philippe Zarka},
1 ar X iv :1 41 1. 68 65 v1 [ as tr oph .I M ] 2 5 N ov 2 01 4 Measuring radio emission from air showers offers a novel way to determine properties of the primary cosmic rays such as their mass and energy. Theory predicts that relativistic time compression effects lead to a ring of amplified emission which starts to dominate the emission pattern for frequencies above ∼ 100 MHz. In this article we present the first detailed measurements of this structure. Ring structures in the radio emission of… CONTINUE READING


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