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July 29, 2015 to August 6, 2015
World Forum
Europe/Amsterdam timezone

Measuring the cosmic ray mass composition with LOFAR

Jul 31, 2015, 3:15 PM
15m
World Forum Theater (World Forum)

World Forum Theater

World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Oral contribution CR-EX Parallel CR07 EAS mass

Speaker

Stijn Buitink (Vrije Universiteit Brussel (VUB))

Description

The LOFAR radio telescope measures the radio emission from air showers with unprecedented precision. In the dense core individual air showers are detected by hundreds of dipole antennas. The complicated radio pattern on the ground is accurately reproduced by modern radio simulation codes and contains information about the longitudinal shower development. With a hybrid reconstruction technique, we measure the depth of the shower maximum with an accuracy of <20 g/cm$^2$. We will present the latest LOFAR results of cosmic-ray mass analysis in the energy regime of $10^{17}$ eV to 10$^{18}$ eV. This range is of particular interest as it may harbor the transition from a Galactic to an extragalactic origin of cosmic rays.
Collaboration -- not specified --
Registration number following "ICRC2015-I/" 780

Primary author

Stijn Buitink (Vrije Universiteit Brussel (VUB))

Co-authors

Anna Nelles (Radboud University Nijmegen) Arthur Corstanje (Radboud University Nijmegen) Gia Trinh (KVI-CART, University of Groningen) Heino Falcke (Radboud University Nijmegen) J.E. Enriquez (Radboud University Nijmegen) J.P. Rachen (Radboud University Nijmegen) Jörg Hörandel (Ru Nijmegen/Nikhef) L. Rossetto (Radboud University Nijmegen) Olaf Scholten (Kernfysisch Versneller Instituut (KVI)) Pim Schellart (R) S ter Veen (ASTRON) Satyendra Thoudam (Radboud University) T Karskens (Radboud University Nijmegen) Tim Huege (KIT)

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