| Affiliation: | 1Department of Physics, University of Durham, South Road, Durham DH1 3LE;2Department of Physics, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USA;3Anglo-Australian Observatory, PO Box 296, Epping, NSW 2121, Australia;4Department of Physics, University of Oxford, Nuclear and Astrophysics Laboratory, Keble Road, Oxford OX1 3RH;5Astrophysics Research Institute, Liverpool John Moores University, 12 Quays House, Egerton Wharf, Birkenhead CH41 1LD;6Research School of Astronomy and Astrophysics, Mount Stromlo Observatory, Institute of Advanced Studies, Australian National University, Private Bag, Weston Creek P.O., ACT 2611, Australia |
