1. Department of Applied Mathematics, University of Leeds, Leeds LS2 9JT, UK
2. Institute of Mathematics, Astrophysics and Particle Physics, Radboud University Nijmegen, PO Box 9010, NL-6500 GL Nijmegen, the Netherlands
3. Institute of Gravitational Wave Astronomy, School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK
4. Anton Pannekoek Institute for Astronomy, University of Amsterdam, NL-1090 GE Amsterdam, the Netherlands