Study of the Latitudinal Dependence of HI Lyman alpha and OVI Emission - Evidence for the Super-Radial Geometry of the Outflow in the Polar Coronal Holes

Details Study of the Latitudinal Dependence of HI Lyman alpha and OVI Emission - Evidence for the Super-Radial Geometry of the Outflow in the Polar Coronal Holes Study of the Latitudinal Dependence of HI Lyman alpha and OVI Emission - Evidence for the Super-Radial Geometry of the Outflow in the Polar Coronal Holes

Apr 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998eostr..79..283d&link_type=abstract

Eos Trans. AGU, 79(17), Spring Mtg. Suppl., S283

Other

Solar Corona, Solar Wind

Scientific paper

The observations obtained during the Whole Sun Month (WSM) campaign (Aug.10 - Sept.08, 1996) provide us with detailed information about the Sun and solar corona near the minimum of solar activity. This data set is especially important for analysis of the latitudinal dependence of the emission from the solar corona, since at solar minimum the polar coronal holes are large, stable structures and streamers are long lasting features occupying a narrow region in the equatorial plane. We present our analysis of the UVCS/SOHO data acquired during the period of the WSM campaign. We describe the distribution of the HI Lyman alpha and O VI (1032,1037 A) emission as a function of both latitude and radius and derive characteristic plasma parameters like velocities along the line of sight and kinetic temperatures. We put constraints on the boundaries of the polar coronal holes by modeling them with flow tubes that expand radially or super-radially and compare our results with constraints from other instruments. We also model the latitudinal distribution of the Lyman alpha and O VI line intensities assuming outflow either along purely radial or non-radial flux tubes. This work was supported by NASA under Grant NAG5-3192 to the Smithsonian Astrophysical Observatory, by the Italian Space Agency, and by Swiss Funding Agencies.

Affiliated with

Also associated with

No associations

Rating

Study of the Latitudinal Dependence of HI Lyman alpha and OVI Emission - Evidence for the Super-Radial Geometry of the Outflow in the Polar Coronal Holes does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Study of the Latitudinal Dependence of HI Lyman alpha and OVI Emission - Evidence for the Super-Radial Geometry of the Outflow in the Polar Coronal Holes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Study of the Latitudinal Dependence of HI Lyman alpha and OVI Emission - Evidence for the Super-Radial Geometry of the Outflow in the Polar Coronal Holes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1603663