Study of Dynamical Properties of Coronal Structures in the Polar Regions

Details Study of Dynamical Properties of Coronal Structures in the Polar Regions Study of Dynamical Properties of Coronal Structures in the Polar Regions

Jan 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999ssrv...87..219k&link_type=abstract

Space Science Reviews, v. 87, Issue 1/2, p. 219-222 (1999).

Physics

Scientific paper

We present the results from a study of the dynamical properties of polar jets in the Sun's polar regions using LASCO C2 coronagraph and EIT observations. In the simplest impulsive acceleration scenarios for jets, gravity is expected to be the dominant force on the jet following the initial acceleration, especially in the Sun's polar regions where the open magnetic fields should not significantly impede the jet's motion. Our analysis shows that although at low heights the kinematics of the jets could be consistent with a gravitational deceleration of the ejected plasma, at higher heights their motions may simply follow the ambient solar wind outflow. If so, the polar jets can be used as tracers of the solar wind in coronal holes.

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