Callisto's Atmosphere: First Evidence for H2, Constraints on Source Rates, and Implications for Future Observations

Shane Carberry Mogan1, Lucas Liuzzo2, Andrew R Poppe3, Orenthal J Tucker4, Robert E Johnson5, Lorenz Roth6, Juan Alday7,8, Audrey Vorburger9, Peter Wurz9, André Galli9 and Howard Todd Smith10, (1)University of California Berkeley, Space Sciences Laboratory, Berkeley, United States, (2)Space Sciences Laboratory, Berkeley, CA, United States, (3)Space Sciences Laboratory, University of California at Berkeley, Berkeley, CA, United States, (4)NASA Goddard Space Flight Center, Greenbelt, United States, (5)Univ Virginia, Charlottesville, VA, United States, (6)KTH Royal Institute of Technology, Division of Space and Plasma Physics, School of Electrical Engineering, Stockholm, Sweden, (7)University of Oxford, Oxford, United Kingdom, (8)Open University, Milton Keynes, United Kingdom, (9)University of Bern, Physics Institute, Space Research and Planetary Sciences, Bern, Switzerland, (10)Applied Physics Laboratory Johns Hopkins, Laurel, MD, United States