1. Department of Physics, University of Alberta, CCIS 4-181, Edmonton, AB T6G 2E1, Canada
2. International Centre for Radio Astronomy Research, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
3. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, UK
4. East Asian Observatory, 660 North Aohoku Place, University Park, Hilo, HI 96720, USA
5. Department of Physics, Astrophysics, University of Oxford, Keble Road, Oxford OX1 3RH, UK
6. Astronomy Department, University of Wisconsin-Madison, 475. N. Charter St., Madison, WI 53706, USA
7. Department of Physics and Astronomy, Wheaton College, Norton, MA 02766, USA
8. Anton Pannekoek Institute for Astronomy, University of Amsterdam, PO Box 94249, NL-1090 GE Amsterdam, the Netherlands
9. Department of Astronomy and Meteorology, University of Barcelona, Martí i Franquès 1, E-08028 Barcelona, Spain
10. XMM-Newton Science Operations Centre, ESAC/ESA, PO Box 78, E-28691 Villanueva de la Cañada, Madrid, Spain
11. National Research Council, Herzberg Astronomy and Astrophysics, 717 White Lake Road, PO Box 248, Penticton, BC V2A 6J9, Canada
12. National Radio Astronomy Observatory, PO Box 0, Socorro, NM 87801, USA
13. School of Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ, UK
14. New York University Abu Dhabi, PO Box 129188, Abu Dhabi, United Arab Emirates
15. Department of Astronomy, University of Virginia, PO Box 400325, Charlottesville, VA 22904, USA