SOT: HOP39 Solar Wind Source
2007-11-16T06:16:31 to 2007-11-16T17:54:28
Science Goal: SUMER campaign - Characterization of Fast and Slow Solar Wind Source Regions
Program: Na IVDG 3min Ca 20sec 2kx2k 2x2
Target: North pole
xcen=230 ycen=915
Instrument: SOT
HOP/JOP: 39
Description:
We propose to study the sources of fast and slow solar wind by investigating how the flux tubes change from a high-speed to a low-speed region. We will select a polar hole with a clearly-defined streamer region nearby and study both regions and the boundary between the polar coronal hole and the surrounding quiet Sun region from the limb to UVCS heights. We aim to measure how the plasma physical properties change between the two wind regions, and with height, and how the flux tubes expand with heliocentric distance. In particular, this campaign will study the evolution of the transition from fast to slow wind source regions as a function of time and heliocentric distance from the limb and will provide important experimental constraints to theoretical models.
wavelength: TF Na I 5896 cadence: 1.32 min fov: 163,163 images: 80 JavaScript Landing Page
