Discovery of X-ray emission from two southern supernova remnants

Details Discovery of X-ray emission from two southern supernova remnants Discovery of X-ray emission from two southern supernova remnants

May 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...230l..27t&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 230, May 15, 1979, p. L27-L31.

Astronomy and Astrophysics

Astrophysics

30

Interstellar Gas, Shock Heating, Supernova Remnants, X Ray Sources, Astronomical Models, Heao 1, Nebulae, Shock Waves

Scientific paper

Two soft X-ray sources positionally coincident with the supernova remnants PKS 1209-52 and RCW 103 have been discovered by using the A-2 experiment on HEAO 1. Their measured fluxes are, respectively, about 1.4 x 10 to the -10th erg/cm-sec (0.2-1.0 keV) and about 1.8 x 10 to the -10th erg/cm-sec (0.6-2.0 keV). Spectral data are used to derive physical parameters for each remnant. For PKS 1209-52 the parameters are suggestive of the remnant's being in an advanced evolutionary phase, with shock-heated interstellar material producing the soft X-ray emission. RCW 103, in contrast, is known from radio and optical data to be in an earlier evolutionary phase, and the soft X-ray flux is most likely due to emission originating in a reflected shock wave or in plasma evaporated from shock-heated interstellar clouds.

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