Cosmic ray composition at the ankle in the energy spectrum

Wibig, T.; Wolfendale, A. W.

doi:doi:10.5194/astra-7-275-2011

Astrophys. Space Sci. Trans., 7, 275-278, 2011
www.astrophys-space-sci-trans.net/7/275/2011/
doi:10.5194/astra-7-275-2011
© Author(s) 2011. This work is distributed
under the Creative Commons Attribution 3.0 License.

Volume 7, issue 3

13 Jul 2011

Cosmic ray composition at the ankle in the energy spectrum
T. Wibig¹ and A. W. Wolfendale²
¹Physics Dept., University of Łódź; Sołtan Inst. Nucl. Studies, Łódź, Poland
²Department of Physics, Durham University, Durham, UK

Received: 06 Nov 2010 – Revised: 03 Mar 2011 – Accepted: 04 Mar 2011 – Published: 13 Jul 2011

Abstract. Recent results from the Pierre Auger Observatory and the Hi-Res array have been analysed hoping to derive a strong statement about the mass composition in the region of the ankle, where the change from Galactic to ExtraGalactic cosmic ray flux should take place, at least according to some theoretical predictions. It is shown that there are problems in reconciling the data with expectation.

Citation: Wibig, T. and Wolfendale, A. W.: Cosmic ray composition at the ankle in the energy spectrum, Astrophys. Space Sci. Trans., 7, 275-278, doi:10.5194/astra-7-275-2011, 2011.

Astrophysics and Space Sciences Transactions

An Open Access Journal of the Arbeitsgemeinschaft Extraterrestrische Forschung e.V.