Institution: | (1) Astronomy Unit, Queen Mary and Westfield College, London, UK;(2) Department of Physics and Astronomy, University of Manchester, UK;(3) Department of Physics and Astronomy, University of Manchester, UK;(4) Physics Department, Oxford University, UK;(5) St. Andrews, United Kingdom;(6) Carter Observatory, Wellington, New Zealand;(7) Department of Pure and Applied Physics, The Queen's University of Belfast, Belfast, UK |