Expansion of the Supernova Remnant RCW 103

Details Expansion of the Supernova Remnant RCW 103 Expansion of the Supernova Remnant RCW 103

Sep 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997pasp..109..990c&link_type=abstract

Publications of the Astronomical Society of the Pacific, v.109, p.990-997

Astronomy and Astrophysics

Astronomy

21

Scientific paper

A new CCD image of the supernova remnant RCW\,103 was taken in 1995 to compare with a photographic plate taken in 1970. We calculated the proper-motion expansion of the outer edge and several filaments by comparing radial slices through each of the data sets. The mean expansion rate of the outer edge is 1\farcs 8~$\pm$~0\farcs 2 per 25 years, or about 1100 km sec$^{-1}$. At this velocity the remnant is most likely around 2000 years old. In addition, it must have made the transition from the double-shock phase of evolution to the point-blast phase fairly recently for the initial energy of the supernova explosion to be within a reasonable rang. (SECTION: Interstellar Medium and Nebulae)

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