Two Wide-angle Imaging Neutral-atom Spectrometers (TWINS) NASA Mission-of- Opportunity - Overview, Initial Results, and Collaborative Opportunities

Details Two Wide-angle Imaging Neutral-atom Spectrometers (TWINS) NASA Mission-of- Opportunity - Overview, Initial Results, and Collaborative Opportunities Two Wide-angle Imaging Neutral-atom Spectrometers (TWINS) NASA Mission-of- Opportunity - Overview, Initial Results, and Collaborative Opportunities

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agusmsm71a..01m&link_type=abstract

American Geophysical Union, Spring Meeting 2009, abstract #SM71A-01

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2716 Energetic Particles: Precipitating, 2740 Magnetospheric Configuration And Dynamics, 2764 Plasma Sheet, 2778 Ring Current, 2788 Magnetic Storms And Substorms (7954)

Scientific paper

TWINS - Two Wide-angle Imaging Neutral-atom Spectrometers is a NASA Explorer Mission-of-Opportunity that is stereoscopically imaging the Earth's magnetosphere for the first time. TWINS simultaneously images the magnetospheric structure in Energetic Neutral Atoms (ENAs) from 1-100 keV with high angular (˜4°x4°) and time (˜1-minute) resolution. The TWINS Ly-α monitor concurrently measures the geocoronal hydrogen density to aid in ENA analysis while environmental sensors provide contemporaneous measurements of the local charged particle environments. By imaging ENAs with identical instruments from two widely spaced, high-altitude, high-inclination spacecraft, TWINS enables three- dimensional visualization of the large-scale structures and dynamics within the magnetosphere for the first time. As of the summer of 2008, both TWINS instruments are operational and providing stereo imaging of the magnetosphere. This talk briefly summarizes the TWINS mission and instruments, summarizes some of the initial results from the mission, and provides a call for future collaborations with theory, modeling, and other in situ observations. More information about TWINS and access to these data are available at http://twins.swri.edu/. * On behalf of the entire TWINS Team

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