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Outflow Velocities at the Base of a Polar Coronal Hole During the 1998 Total Eclipse |
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| Authors: | S Patsourakos J-C Vial J-R Gabryl S Koutchmy U Schühle |
| Institution: | (1) I.A.S., Université Paris XI-CNRS, Bat 121, 91405 Orsay Cedex, France;(2) Observatoire Royal De Belgique, Avenue Circulaire 3, 1180 Bruxelles, Belgium;(3) I.A.P., CNRS, 98 Bis Bd Arago, 75014 Paris, France;(4) Max-Planck-Institut fur Aeronomie, D-37189 Katlenburg-Lindau, Germany |
| Abstract: | Polar coronal holes represent the most convincing site from which the high-speed solar wind originates. Here we report high-accuracy Doppler shifts measured in the O VI (1037.6 Å) line obtained by SUMER on SOHO inside an interplume region within the south polar coronal hole. We infer limits on the outflow velocity and draw hints about the flow geometry. |
| Keywords: | Sun corona coronal holes flows |
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