1. School of Physics, The University of Sydney and ARC Centre of Excellence for Dark Matter Particle Physics , Sydney, NSW, 2006 , Australia
2. Institute for Computational Cosmology, Department of Physics, Durham University , South Road, Durham DH1 3LE , UK
3. Laboratoire d’Astrophysique, École Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny , CH-1290 Versoix , Switzerland
4. Jet Propulsion Laboratory, California Institute of Technology , 4800 Oak Grove Drive, Pasadena, CA 91109 , USA
5. David A. Dunlap Department of Astronomy and Astrophysics, University of Toronto , 50 St George Street, Toronto, ON M5S 3H4 , Canada
6. Centre for Extragalactic Astronomy, Department of Physics, Durham University , South Road, Durham DH1 3LE , UK
7. Department of Physics, Northeastern University , 360 Huntington Ave, Boston, MA 02115 , USA