Physics
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsm13b..01m&link_type=abstract
American Geophysical Union, Fall Meeting 2008, abstract #SM13B-01
Physics
2730 Magnetosphere: Inner, 2778 Ring Current, 2788 Magnetic Storms And Substorms (7954), 2794 Instruments And Techniques
Scientific paper
*Presented on behalf of the entire TWINS Team Two Wide-angle Imaging Neutral-atom Spectrometers (TWINS) is a NASA Explorer Mission-of-Opportunity to stereoscopically image the Earth's magnetosphere for the first time [McComas et al., 2008]. TWINS extends our understanding of magnetospheric structure and processes by providing simultaneous Energetic Neutral Atom (ENA) imaging from two widely separated locations. TWINS observes ENAs from 1-100 keV with high angular (~4° x 4°) and time (~1-minute) resolution. The TWINS Ly-α monitor 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 finally on orbit and operational and stereo imaging of the magnetosphere has begun. This talk briefly summarizes the TWINS mission and instruments and shows some of the 'first-light' observations. More information about TWINS and access to these data are available at http://twins.swri.edu. Reference: McComas, D.J., F. Allegrini, J. Baldonado, B. Blake, P. C. Brandt, J. Burch, J. Clemmons, W. Crain, D. Delapp, R. DeMajistre, D. Everett, H. Fahr, L. Friesen, H. Funsten, J. Goldstein, M. Gruntman, R. Harbaugh, R. Harper, H. Henkel, C. Holmlund, G. Lay, D. Mabry, D. Mitchell, U. Nass, C. Pollock, S. Pope, M. Reno, S. Ritzau, E. Roelof, E. Scime, M. Sivjee, R. Skoug, T. S. Sotirelis, M. Thomsen, C. Urdiales, P. Valek, K. Viherkanto, S. Weidner, T. Ylikorpi, M. Young, J. Zoennchen, The Two Wide-angle Imaging Neutral-atom Spectrometers (TWINS) NASA Mission-of-Opportunity, Submitted to Space Science Reviews, 2008.
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