1. International Centre for Radio Astronomy Research, Curtin University, Bentley, WA 6102, Australia
2. ARC Centre of Excellence for All-sky Astrophysics (CAASTRO), Curtin University, Bentley, WA 6102, Australia
3. ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), Curtin University, Bentley, WA 6102, Australia
4. INAF-Istituto di Radioastronomia, via Gobetti 101, I-40129, Bologna, Italy
5. Department of Physics and Electronics, Rhodes University, PO Box 94, Grahamstown, 6140, South Africa
6. Square Kilometre Array South Africa (SKA SA), Park Road, Pinelands 7405, South Africa
7. School of Physics, The University of Melbourne, Parkville, VIC 3010, Australia
8. Netherlands Institute for Radio Astronomy (ASTRON), Postbus 2, NL-7990 AA Dwingeloo, the Netherlands
9. Sydney Institute for Astronomy, School of Physics, The University of Sydney, NSW 2006, Australia
10. School of Earth and Space Exploration, Arizona State University, Tempe, AZ 8528, USA
11. Research School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 2611, Australia