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By J. L. Burch, V. Angelopoulos (auth.), J. L. Burch, V. Angelopoulos (eds.)

The THEMIS undertaking goals to figure out the set off and large-scale evolution of substorms through using 5 exact micro-satellites which line up alongside the Earth's magnetotail to trace the movement of debris, plasma, and waves from one aspect to a different and for the 1st time, get to the bottom of space-time ambiguities in key areas of the magnetosphere on an international scale. the first objective of THEMIS is to explain which magnetotail procedure is answerable for substorm onset on the zone the place substorm auroras map: (i) neighborhood disruption of the plasma sheet present (current disruption) or (ii) the interplay of the present sheet with the speedy inflow of plasma emanating from reconnection. The probes additionally traverse the radiation belts and the dayside magnetosphere, permitting THEMIS to deal with extra baseline targets. This quantity describes the challenge, the instrumentation, and the knowledge derived from them.

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Extra resources for The THEMIS Mission

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The General Maneuver program (GMAN), built also by NASA/GSFC and ported into the UCB mission design and mission operations tool-chest, permits finite-maneuver targeting functions with built-in propagation capability using GTDS. Calls to GMAN were also enabled from within IDL, such that a unified Maneuver Design Tool (MDT) encompassed the entire mission design effort calling interchangeably GTDS or GMAN depending on the fidelity and speed required. An IDPU engineering unit and two copies of the Bus Avionics Unit (BAU) unit equipped with an IDPU flight spare or an IDPU simulator are used to test commands before they are uploaded for execution in light, and are able to predict the vehicle behavior through special software.

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