EUV Observations Above Polar Coronal Holes

Details EUV Observations Above Polar Coronal Holes EUV Observations Above Polar Coronal Holes

Jan 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999ssrv...87..185f&link_type=abstract

Space Science Reviews, v. 87, Issue 1/2, p. 185-188 (1999).

Physics

17

Solar Corona, Coronal Holes, Electron Temperature, Electron Density

Scientific paper

We derive electron temperature and density as a function of height up to 0.2 R&sun; above the limb in polar coronal holes, using five EUV data sets recorded by the SOHO Coronal Diagnostic Spectrometer between July 1997 and February 1998. Radial T and N distributions, averaged in a 2° to 10° range of position angles, are the same above the North and South coronal holes. They do not show any time variability over a period of seven months. Polar plumes are found to have lower electron temperature and higher density than the interplume lanes. The electron density slope suggests that the proton temperatures are twice as high as the electron temperatures.

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