Department of Physics and Astronomy, The University of Western Ontario , London, ON N6A 3K7, Canada ; [email protected]
Peter G. Brown
Department of Physics and Astronomy, The University of Western Ontario , London, ON N6A 3K7, Canada ; [email protected]; Centre for Planetary Science and Exploration, The University of Western Ontario , London, ON N6A 5B8, Canada
Charles Bell
Vicksburg Observatory , Vicksburg, MS, USA
Xing Gao
No. 1 Senior High School of Ürumqi , Ürumqi, Xinjiang, People’s Republic of China
Martin Mašek
Institute of Physics Czech Academy of Sciences , Na Slovance 1999/2, 182 21, Praha, Czech Republic
Man-To Hui
Department of Earth, Planetary and Space Sciences, University of California at Los Angeles , 595 Charles Young Drive East, Los Angeles, CA 90095-1567, USA