1. Department of Physics and Astronomy, University of Western Cape, Cape Town 7535, South Africa
2. The South African Radio Astronomy Observatory (SARAO), 2 Fir Street, Black River Park, Observatory, Cape Town 7925, South Africa
3. Department of Physics, Banwarilal Bhalotia College, GT Rd, Ushagram, Asansol, West Bengal 713303, India
4. Kapteyn Astronomical Institute, University of Groningen, PO Box 800, NL-9700 AV Groningen, the Netherlands
5. LERMA, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Université, F-75014 Paris, France
6. INAF - IRA, via P. Gobetti 101, I-40129 Bologna, Italy
7. Department of Physics and Electronics, Rhodes University, PO Box 94, Grahamstown 6140, South Africa
8. Department of Astronomy, University of California, Berkeley, CA 94720, USA
9. National Radio Astronomy Observatory, Socorro, NM 87801, USA
10. Cavendish Astrophysics, University of Cambridge, CB3 0HE Cambridge, UK
11. Department of Mathematical Sciences, Computer Science Division, Stellenbosch University, Private Bag X1, 7602 Matieland, South Africa
12. School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USA
13. Department of Physics and McGill Space Institute, McGill University, 3600 University Street, Montreal, QC H3A 2T8, Canada
14. Department of Physics, University of Washington, Seattle, WA 98105, USA
15. Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA
16. eScience Institute, University of Washington, Seattle, WA 98195, USA
17. Department of Physics and Astronomy, Center for Particle Cosmology, University of Pennsylvania, Philadelphia, PA 19104, USA
18. National Radio Astronomy Observatory, Charlottesville, VA 22903, USA
19. Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
20. Department of Physics and Astronomy, University of California, Los Angeles, CA 90095, USA
21. California State University of Los Angeles, 5151 State University Dr, Los Angeles, CA 90032, USA
22. School of Physics, University of Melbourne, Parkville, VIC 3010, Australia
23. ARC Centre of Excellence for All-Sky Astrophysics in 3 Dimensions (ASTRO 3D), University of Melbourne, VIC 3010, Australia
24. Department of Astronomy, San Diego State University, San Diego, CA 92182, USA
25. Scuola Normale Superiore, I-56126 Pisa, PI, Italy
26. Center for Astrophysics | Harvard & Smithsonian, Cambridge, MA 02138, USA
27. American Astronomical Society, Washington, DC 20006, USA