Institution: | Department of Physics, University of Durham, South Road, Durham DH1 3LE; Institute for Astronomy, Department of Physics &Astronomy, University of Edinburgh, Blackford Hill, Edinburgh EH9 3HJ; Department of Physics &Astronomy, University College London, Gower Street, London WC1E 6BT; Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE; Observatoire de Toulouse, 14 avenue E. Belin, 31400 Toulouse, France |