Imaging X-ray observations and the temperature structure of the Cygnus Loop

Details Imaging X-ray observations and the temperature structure of the Cygnus Loop Imaging X-ray observations and the temperature structure of the Cygnus Loop

Dec 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...234l.101t&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 234, Dec. 1, 1979, p. L101-L105.

Astronomy and Astrophysics

Astronomy

11

Nebulae, Shock Wave Propagation, Supernova Remnants, X Ray Astronomy, Adiabatic Conditions, Blasts, Iron, Shock Fronts, Temperature Profiles

Scientific paper

Imaging X-ray observations of the northeast portion of the Cygnus Loop (NGC 6992) reveal that X-ray emission extends 5 arc min beyond the optical filaments. Comparison with Fe XIV 5303 forbidden line measurements across the emitting shell is consistent with a temperature gradient across the shell from 10 to the 6.1 K (outside) to 10 to the 6.3 K (inside). Both X-ray and Fe XIV forbidden line intensity and spatial structure can be explained by a Sedov adiabatic blast wave with a shock velocity of 290 plus or minus 15 km/s.

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