1. Department of Astrophysics, University of Oxford , Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, UK
2. Magdalen College, University of Oxford , Oxford OX1 4AU, UK
3. Australia Telescope National Facility, CSIRO, Space and Astronomy , PO Box 76, Epping, NSW 1710, Australia
4. School of Science, Western Sydney University , Locked Bag 1797, Penrith, NSW 2751, Australia
5. Space Science Division, Naval Research Laboratory , Washington, DC 20375, USA
6. Centre for Astrophysics and Supercomputing, Swinburne University of Technology , PO Box 218, Hawthorn, VIC 3122, Australia
7. The ARC Centre for Excellence for Gravitational-wave Discovery (OzGrav) , Mail H29, Swinburne University of Technology, PO Box 218, Hawthorn, VIC 3122, Australia
8. CSIRO Space and Astronomy , PO Box 1130 Bentley, WA 6102, Australia
9. Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of Manchester , Manchester M13 9PL, UK