Heliospheric Imagers for Tracking Coronal Mass Ejections: Lessons Learned from the Solar Mass Ejection Imager

Astronomy and Astrophysics – Astrophysics

Scientific paper

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7500 Solar Physics, Astrophysics, And Astronomy, 7513 Coronal Mass Ejections

Scientific paper

The Solar Mass Ejection Imager (SMEI) was launched on board the DoD Space Test Program's Coriolis satellite on January 6, 2003. The SMEI instrument represents a new kind of imager designed specifically to observe Coronal Mass Ejections (CMEs) and other dense structures in the solar wind as they propagate through the heliosphere. Its viewing range starts at 20 degrees elongation from the Sun and extends to beyond 1 A.U.. More than 120 CMEs have been detected with the SMEI instrument, including three well-documented "halo" events that led to geomagnetic storm conditions on Earth. These observations demonstrate the potential of a heliospheric imager for space weather specification and prediction purposes. More than halfway through SMEI's planned three-year lifetime, we look ahead towards an operational heliospheric imager. We will briefly reveal some of the lessons learned from the SMEI mission and offer recommendations for a future system with operational capability.

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