Event Title

Imaging the Magnetosphere

Location

Yosemite National Park

Start Date

2-10-2014 6:25 PM

End Date

2-10-2014 6:55 PM

Description

In this talk I present a review of inner magnetospheric (plasmaspheric and ring current) imaging results from two missions: the Imager for Magnetopause-to-Aurora Global Exploration (IMAGE), and Two Wide-angle Imaging Neutral-atom Spectrometers (TWINS). The extreme ultraviolet (EUV) imager onboard IMAGE revolutionized our knowledged and understanding of the Earth's plasmasphere, both by revealing new global density features, and confirming decades-old hypotheses about how cold plasma dynamics is controlled by both the solar wind and magnetosphere-ionosphere (M-I) coupling. TWINS is the first stereoscopic magnetospheric imaging mission, performing simultaneous energetic neutral atom (ENA) imaging from two widely-separated Molniya orbits on two different spacecraft and enabling discovery of previously unknown global dependences of ion pitch angle. Building on results from IMAGE and TWINS, I show an example of how terrestrial electrodynamics may be applied to the study of the interchange instability in the plasmasphere of Saturn. I also discuss prospects for truly global imaging of the entire magnetosphere, to determine causal relationships between solar wind changes and inner magnetospheric responses.

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Feb 10th, 6:25 PM Feb 10th, 6:55 PM

Imaging the Magnetosphere

Yosemite National Park

In this talk I present a review of inner magnetospheric (plasmaspheric and ring current) imaging results from two missions: the Imager for Magnetopause-to-Aurora Global Exploration (IMAGE), and Two Wide-angle Imaging Neutral-atom Spectrometers (TWINS). The extreme ultraviolet (EUV) imager onboard IMAGE revolutionized our knowledged and understanding of the Earth's plasmasphere, both by revealing new global density features, and confirming decades-old hypotheses about how cold plasma dynamics is controlled by both the solar wind and magnetosphere-ionosphere (M-I) coupling. TWINS is the first stereoscopic magnetospheric imaging mission, performing simultaneous energetic neutral atom (ENA) imaging from two widely-separated Molniya orbits on two different spacecraft and enabling discovery of previously unknown global dependences of ion pitch angle. Building on results from IMAGE and TWINS, I show an example of how terrestrial electrodynamics may be applied to the study of the interchange instability in the plasmasphere of Saturn. I also discuss prospects for truly global imaging of the entire magnetosphere, to determine causal relationships between solar wind changes and inner magnetospheric responses.