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- UVCS
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- UVCS also has made the first measurements of ion outflows in coronal streamers now believed to be the source of slow
- speed wind streams. It discovered that the oxygen velocity distribution becomes comparable to that of the hydrogen at
- 4 solar radii in certain streamers indicating the importance of waves in streamers. UVCS observations of coronal mass
- ejections (CME) have yielded the first measurements of velocities transverse to their primary direction of motion, the
- temperature distributions of ions present and the three dimensional structure of the CME material. UVCS
- determinations of elemental abundances in the extended corona provide information about the origin of the constituent
- gases and its connection to abundance variations detected in the solar wind far from the Sun.
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- UVCS/EIT composite ultraviolet image of the Sun's extended corona recorded by UVCS (outside black circle) and by
- EIT (inside circle).
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