Coordinated SOHO Observations of Polar Plumes: Ultraviolet Spectroscopy with UVCS

Details Coordinated SOHO Observations of Polar Plumes: Ultraviolet Spectroscopy with UVCS Coordinated SOHO Observations of Polar Plumes: Ultraviolet Spectroscopy with UVCS

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...188.3704f&link_type=abstract

American Astronomical Society, 188th AAS Meeting, #37.04; Bulletin of the American Astronomical Society, Vol. 28, p.877

Astronomy and Astrophysics

Astrophysics

Scientific paper

The SOHO Ultraviolet Coronagraph Spectrometer (UVCS/SOHO) observed polar plumes at the south polar coronal hole on 7 March 1996. Observations were made in H I Ly-alpha, Ly-beta and O VI 103.2 and 103.7 nm. Heliocentric heights from 1.5 to 3.2 R_&sun; were observed. In addition, HI Ly-alpha observations with 60 sec time resolution were obtained at a heliocentric height of 1.6 solar radii. The polar plumes are clearly distinguishable in both H I Ly-alpha and O VI. These measurements were made in coordination with time resolved magnetograms by the Michelson Doppler Imager (MDI) and time resolved XUV images by the Extreme-Ultraviolet Imaging Telescope (EIT). This work is supported by NASA Contract NAS5-31250 to the Smithsonian Astrophysical Observatory, by the Italian Space Agency and by Switzerland.

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