1. Curtin University Department of Physics and Astronomy, Perth, WA 6845, Australia
2. International Centre for Radio Astronomy Research, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
3. Eureka Scientific, Inc., 2452 Delmer Street, Oakland, CA 94602, USA
4. SRON Netherlands Institute for Space Research, Sorbonnelaan 2, NL-3584 CA Utrecht, the Netherlands
5. Astrophysics, Department of Physics, University of Oxford, Keble Road, Oxford, OX1 3RH, UK
6. INAF-Osservatorio Astronomico di Brera, Via E. Bianchi 46, I-23807 Merate (LC), Italy
7. Department of Astronomy, University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa
8. Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands
9. Gravitation & Astroparticle Physics Amsterdam Institute, University of Amsterdam, NL-1098 XH Amsterdam, the Netherlands
10. Department of Astrophysics/IMAPP, Radboud University, PO 9010, NL- 6500 GL, Nijmegen, the Netherlands
11. Department of Physics and Astronomy, Wheaton College, Norton, MA 02766, USA
12. XMM-Newton Science Operations Centre, ESAC/ESA, Camino Bajo del Castillo s/n, Urb. Villafranca del Castillo, E-E-28691 Villanueva de la Cañada, Madrid, Spain
13. Institute of Cosmos Sciences, University of Barcelona, Martí i Franquès 1, E-08028 Barcelona, Spain
14. Center for Astro, Particle and Planetary Physics, New York University Abu Dhabi, PO Box 129188 Abu Dhabi, UAE
15. INAF, Istituto di Astrofisica Spaziale e Fisica Cosmica, Via U. La Malfa 153, I-90146 Palermo, Italy
16. Department of Astronomy, University of Virginia, 530 McCormick Road, Charlottesville, VA 22904-4325, USA
17. College of Astronomy and Space Sciences, University of the Chinese Academy of Sciences, Beijing 100049, China
18. Sydney Institute for Astronomy, School of Physics A28, The University of Sydney, Sydney, NSW 2006, Australia
19. East Asian Observatory, 660 N. A’ohōkū Place, University Park, Hilo, HI 96720, USA
20. Institute for Space Sciences, Atomistilor 409, PO Box MG-23, 077125 Bucharest-Magurele, Romania