Non-equilibrium ionization effects in the supernova remnant RCW 86

Details Non-equilibrium ionization effects in the supernova remnant RCW 86 Non-equilibrium ionization effects in the supernova remnant RCW 86

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...337..399c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 337, Feb. 1, 1989, p. 399-407.

Astronomy and Astrophysics

Astrophysics

18

Nebulae, Nonequilibrium Ionization, Supernova Remnants, X Ray Sources, Exosat Satellite, Shock Wave Propagation

Scientific paper

X-ray images show that the SNR RCW 86 consists of two emission regions. The electron temperature of both two regions is 3.4 keV. The low-energy flux (0.2-2 keV) is strongly enhanced compared to a simple thermal bremsstrahlung spectrum with Te = 3.4 keV fitted to the 2-10 keV data. This enhancement is most likely caused by nonequilibrium ionization effects in which case our data of RCW 86 are consistent with a Type I remnant for which the northeast part is in the Sedov phase. The large brightnees of the southwest part is most probably caused by a recent collision of the shock with higher density clouds.

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