1. Center for Astrophysics | Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
2. NASA Hubble Fellowship Program, Einstein Fellow
3. Black Hole Initiative, Harvard University, 20 Garden Street, Cambridge, MA 02138, USA
4. Princeton Center for Theoretical Science, Jadwin Hall, Princeton University, Princeton, NJ 08544, USA
5. International Centre for Radio Astronomy Research, M468, The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia
6. CSIRO Astronomy and Space Science, P.O. Box 1130, Bentley, WA 6102, Australia
7. Observatorio Astronómico Nacional (IGN), Alfonso XII, 3 y 5, 28014 Madrid, Spain
8. Haystack Observatory, Massachusetts Institute of Technology, 99 Millstone Rd., Westford, MA 01886, USA
9. National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
10. Harvard College, Harvard University, Cambridge, MA 02138, USA
11. Department of Astronomy, University of Massachusetts, Amherst, MA 01003, USA
12. Steward Observatory and Department of Astronomy, University of Arizona, 933 N. Cherry Ave., Tucson, AZ 85721, USA
13. Department of Astrophysics, Institute for Mathematics, Astrophysics and Particle Physics (IMAPP), Radboud University, P.O. Box 9010, 6500 GL Nijmegen, The Netherlands
14. Leiden Observatory, Leiden University, Postbus 2300, 9513 RA Leiden, The Netherlands
15. Netherlands Organisation for Scientific Research (NWO), Postbus 93138, 2509 AC Den Haag, The Netherlands