1. International Centre for Radio Astronomy Research, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
2. Center for Data Intensive and Time Domain Astronomy, Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA
3. National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
4. Sydney Institute for Astronomy, School of Physics A28, The University of Sydney, Sydney, NSW 2006, Australia
5. Observatoire astronomique, Université de Strasbourg, CNRS, UMR 7550, 11 rue de l’Université, F-67000, Strasbourg, France
6. Physics Department, Texas Tech University, PO Box 41051, Lubbock, TX 79409, USA
7. School of Physical and Chemical Sciences, University of Canterbury, Christchurch 8041, New Zealand