| Affiliation: | (1) Astronomy Department, The University of Western Ontario, London, Ontario, Canada;(2) Physics Department, The University of Western Ontario, London, Ontario, Canada;(3) Department of Physics, Engineering and Geology, Mount Allison University, Sackville, New Brunswick, Canada;(4) Ondrejov Observatory, Astronomical Institute of the Academy of Sciences of the Czech Republic, Ondrejov, Czech Republic;(5) Department of Terrestrial Magnetism, Carnegie Institute of Washington, 5241 Broad Branch Road, Washington, D. C., USA |
