1. Institut für Astro- und Teilchenphysik, Universität Innsbruck, Technikerstraße 25, A-6020 Innsbruck, Austria
2. School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, Fife KY16 9SS, UK
3. International Centre for Radio Astronomy Research, 7 Fairway, The University of Western Australia, Crawley, Perth, WA 6009, Australia
4. School of Physics, the University of Melbourne, Parkville, VIC 3010, Australia
5. Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
6. Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD, UK
7. School of Physics and Astronomy, The University of Nottingham, University Park, Nottingham NG7 2RD, UK
8. Australian Astronomical Observatory, PO Box 915, North Ryde, NSW 1670, Australia
9. Sydney Institute for Astronomy, School of Physics A28, University of Sydney, NSW 2006, Australia
10. School of Physics, Monash University, Clayton, VIC 3800, Australia
11. Research School of Astronomy and Astrophysics, The Australian National University, Canberra, ACT 2611, Australia
12. European Space Agency, ESTEC, Keplerlaan 1, NL-2200 AG Noordwijk, the Netherlands
13. European Southern Observatory, Karl-Schwarzschild-Str. 2, D-85748 Garching, Germany
14. Department of Physics and Astronomy, Macquarie University, NSW 2109, Australia
15. Astronomy Centre, University of Sussex, Falmer, Brighton BN1 9QH, UK
16. Institute for Computational Cosmology, Department of Physics, Durham University, South Road, Durham DH1 3LE, UK
17. Astrophysics Group, HH Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, UK
18. Jeremiah Horrocks Institute, School of Computing, Engineering and Physical Sciences, University of Central Lancashire, Preston PR1 2HE, UK
19. Astrophysics Group, Department of Physics, University of the Western Cape, 7535 Bellville, Cape Town, South Africa
20. Max Planck Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany