Far-Ultraviolet Observations of the Loop I/North Polar Spur Region

Details Far-Ultraviolet Observations of the Loop I/North Polar Spur Region Far-Ultraviolet Observations of the Loop I/North Polar Spur Region

Aug 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007apj...665l..39p&link_type=abstract

The Astrophysical Journal, Volume 665, Issue 1, pp. L39-L42.

Astronomy and Astrophysics

Astronomy

6

Ism: Bubbles, Ism: Individual (Loop I), Ism: Individual: Name: North Polar Spur, Ism: Supernova Remnants, Ultraviolet: Ism

Scientific paper

The results of diffuse far-ultraviolet observations of the Loop I/North Polar Spur (NPS) region are presented in this Letter. Several important ionic emission lines, including C IV, Si II*, Si IV, and Al II, were detected. Fluorescent emission lines from hydrogen molecules were also seen in the spectra. A spectral image made with C IV emission shows a shell-like feature colocated with the X-ray NPS. This feature is located just inside the Loop I radio ridges. Another interesting C IV feature is seen at the inner edge of the ``interaction ring,'' where the cold interstellar medium is in direct contact with the X-ray-bright hot gas. The present observation is in good agreement with a model of recent supernova explosion in an inhomogeneous medium, possibly disturbed by previous multiple supernova explosions.

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