1. Hartebeesthoek Radio Astronomy Observatory, PO Box 443, Krugersdorp 1741, South Africa
2. Department of Mathematical Sciences, UNISA, PO Box 392, Pretoria 0003, South Africa
3. SKA SA, The Park, Park Road, Pinelands, South Africa
4. NRAO, 520 Edgemont Rd, Charlottesville, VA 22903, USA
5. Space Research Unit, Physics Department, North West University, Potchefstroom 2520, South Africa
6. Department of Physics and Astronomy, University of Nigeria, Carver Building, 1 University Road, Nsukka, Nigeria
7. School of Physical Sciences, University of Nairobi, Nairobi, Kenya
8. Trinity House High School, Little Falls 1724, South Africa