Van Allen Probes Extended Mission Science Themes (1 of 3) 1.Spatial and temporal structures of injections and other transient phenomena and their effects.

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Presentation transcript:

Van Allen Probes Extended Mission Science Themes (1 of 3) 1.Spatial and temporal structures of injections and other transient phenomena and their effects on the radiation belts and ring current New Opportunities: –Modified orbit configurations –Different modes of operation for the instruments –Additional Assets: MMS and ERG 2.Three-dimensional structures and distributions of VLF and ULF waves and their effects on the radiation belt and ring current populations New Opportunities: –Tweak the orbit phases to align spacecraft along field lines –Modify orbits for longitude sampling of ULF wave structures –Operating the instruments in different modes, –ERG measurements at mid-latitudes within Probe Quadrants 1

Van Allen Probes Extended Mission Science Themes (2 of 3) 3.What are the detailed physical mechanisms responsible for energetic electron precipitation. New Opportunities: –Magnetic latitude orbit separations. –New CubeSats: e. g. a) CeREs (mid-2015), and b) ELFIN (late 2016) –ERG flying at mid-latitudes. –Extended mission BARREL Campaign (beyond bridge phase). 4.Responses of Earth’s radiation belt regions, as the interplanetary drivers evolve from CME dominated to CIR dominated conditions? New Opportunities: –Operating during a critical new phase of the solar cycle, –May result in stronger / more energetic electron belt enhancements 2

Van Allen Probes Extended Mission Science Themes (3 of 3) 5.Detailed structures and characters of the microphysical processes that act to energize radiation belt particles in the inner magnetosphere? New Opportunities: –Operate the instrument differently in target regions –Adjust the phases of the two probes to minimize close approach –Adjust orbit phases to align spacecraft along field lines –Adjust relative apogees to increase lapping rate and close approaches. 6.Coupling between the magnetopause and the inner magnetosphere? Role and mechanisms of the magnetopause act as a sink of belt particles? New Opportunities: –MMS measurement of reconnection as it skims the magnetopause –MMS measurements of energetic particle escape through the magnetopause. –Move one spacecraft apogee substantially higher. 3