Magnetosphere-Ionosphere Observatory
(MIO)...
Discerning What Drives Auroral Arcs

*Get inside the aurora in the magnetosphere
*Know you're inside the aurora
*Measure critical gradients

The MIO mission concept involves a tight swarm of satellites in geosynchronous orbit that are magnetically connected to a ground-based observatory, with a satellite-based electron beam establishing the precise connection to the ionosphere. The aspect of this mission that enables it to solve the outstanding auroral problem is "being in the right place at the right time - and knowing it". Each of the many auroral-arc-generator mechanisms that have been hypothesized has a characteristic gradient in the magnetosphere as its fingerprint. The MIO mission is focused on (1) getting inside the auroral generator in the magnetosphere, (2) knowing you are inside, and (3) measuring critical gradients inside the generator. The decisive gradient measurements are performed in the magnetosphere with satellite separations of 100's of km. The magnetic footpoint of the swarm is marked in the ionosphere with an electron gun firing int the loss cone from one satellite. The beamspot is detected from the ground optically and/or by HF radar, and ground-based auroral imagers and radar provide the auroral context of the satellite swarm. With the satellites in geosynchronous orbit, a single ground observatory can spot the beam image and monitor the aurora, with full-time conjunctions between the satellites and the aurora.

Download MIO 2-page Quad Chart
Download MIO 2-page Quad Chart (.pdf)
View MIO White Paper
Download MIO White Paper (.pdf)

Contact Info for MIO
Joe Borovsky, Los Alamos National Laboratory
jborovsky@lanl.gov (505)667-8368