Radial distribution of Fe XIV emission in the Cygnus Loop

Details Radial distribution of Fe XIV emission in the Cygnus Loop Radial distribution of Fe XIV emission in the Cygnus Loop

Aug 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977stin...7733007w&link_type=abstract

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Physics

Cygnus Constellation, Emission Spectra, Iron Isotopes, Radial Distribution, Interstellar Gas, One Dimensional Flow, Shock Fronts, Stellar Spectrophotometry

Scientific paper

The one dimensional distribution of Fe 14 emission has been determined along a radius of the Cygnus Loop through the use of a tilting filter photometer. The observed emission extends at least 5 arc minutes outside the optical filaments. A simple Sedov solution model of the temperature and density distribution behind the shock agrees with the observations if the shock front is near the extent of the Fe 14 emission, the shock velocity is from 300 to 250/kms and the density external to the remnant is about 0.7-1.4 cm to three minus 3 power. These parameters are in reasonable agreement with X-ray maps and optical radial velocities.

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