UVCS/SOHO ion kinetics in coronal streamers

We made streamer observations with the Ultraviolet Coronagraph Spectrometer (UVCS) on the Solar and Heliospheric Observatory (SOHO) during the early p art of 1998, which was a time of moderate solar activity. We present an emp irical study of coronal ion kinetics using the line profiles from these obs ervations. Our first and most striking result is that the mid-latitude (ML) streamers have much narrower O VI 1032 Angstrom line profiles than the sol ar minimum equatorial (SME) streamers. Our second result is that the line p rofiles from a small collection of ions in ML streamers do not seem to be c onsistent with the ions having a single temperature and turbulent velocity. We discuss several interpretations, including line of sight (LOS) effects. This work is supported by the National Aeronautics and Space Administratio n under grant NAG-3192 to the Smithsonian Astrophysical Observatory.