1. School of Mathematical and Physical Sciences, Macquarie University , Sydney, NSW 2109 , Australia
2. Australia Telescope National Facility, CSIRO Space and Astronomy , P.O. Box 76, Epping, NSW 1710 , Australia
3. Astrophysics and Space Technologies Research Centre, Macquarie University , Sydney, NSW 2109 , Australia
4. ARC Centre of Excellence for All-Sky Astrophysics in 3 Dimensions (ASTRO 3D) , Australia
5. International Centre for Radio Astronomy Research, Curtin University , Bentley, WA 6102 , Australia
6. Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA) and Department of Physics and Astronomy, Northwestern University , Evanston, IL 60208 , USA
7. Department of Astronomy and Astrophysics, University of California , Santa Cruz, CA 95064 , USA
8. Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU) , 5-1-5 Kashiwanoha, Kashiwa, 277-8583 , Japan
9. Division of Science, National Astronomical Observatory of Japan , 2-21-1 Osawa, Mitaka, Tokyo 181-8588 , Japan
10. Instituto de Física, Pontificia Universidad Católica de Valparaíso , Casilla 4059, Valparaíso , Chile
11. Centre for Astrophysics and Supercomputing, Swinburne University of Technology , Hawthorn, VIC 3122 , Australia
12. ASTRON, Netherlands Institute for Radio Astronomy , Oude Hoogeveensedijk 4, NL-7991 PD Dwingeloo , the Netherlands
13. Joint institute for VLBI ERIC , Oude Hoogeveensedijk 4, NL-7991 PD Dwingeloo , the Netherlands
14. Anton Pannekoek Institute for Astronomy, University of Amsterdam , Science Park 904, NL-1098 XH Amsterdam , the Netherlands
15. Sydney Institute for Astronomy , School of Physics A28, University of Sydney, NSW 2006 , Australia
16. SKA Observatory, SKA Observatory , Jodrell Bank, Lower Withington, Macclesfield SK11 9FT , UK