Institution: | Department of Physics, Science Laboratories, South Road, Durham, DH1 3LE;Department of Physics, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USA;Anglo-Australian Observatory, PO Box 296, Epping, NSW 2121, Australia;Department of Physics, Oxford University, Keble Road, Oxford, OX1 3RH;Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead, CH41 1LD |