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Observations of O VI Emission from the Galactic Corona with the Hopkins Ultraviolet Telescope
 

Summary: Observations of O VI Emission from the Galactic Corona
with the Hopkins Ultraviolet Telescope
W. Van Dyke Dixon and Arthur F. Davidsen
Department of Physics and Astronomy, The Johns Hopkins University
Charles and 34th Streets, Baltimore, Maryland 21218
wvd@pha.jhu.edu, afd@pha.jhu.edu
and
Henry C. Ferguson
Space Telescope Science Institute, Baltimore, Maryland 21218
ferguson@stsci.edu
To appear in The Astrophysical Journal
ABSTRACT
We have searched for far­UV emission from coronal gas in the Galactic
halo along lines of sight with galactic latitudes between 42 ffi and 88 ffi in spectra
obtained by the Hopkins Ultraviolet Telescope (HUT) during the Astro­2 space
shuttle mission in 1995 March. Of four spectra taken through a 19 00 \Theta197 00
aperture, two show O VI ––1032; 1038 emission at a significance of 4 oe. Two
out of six spectra taken through a 10 00 \Theta56 00 aperture also show O VI emission,
though at only 2 oe levels of significance. Three of the detections lie near regions
of enhanced soft x­ray emission associated with Radio Loop I. The fourth, at

  

Source: Henry, Richard C.- Department of Physics and Astronomy, Johns Hopkins University

 

Collections: Physics