Monthly Notices of the Royal Astronomical Society volume 220, issue 3, P501-511 1986 DOI: 10.1093/mnras/220.3.501 View full text
D. A. Leahy, S. Naranan, K. P. Singh

Abstract: We present an analysis of data from both the Röntgen Satellite (ROSAT) and the Advanced Satellite for Cosmology and Astrophysics (ASCA) of the supernova remnant G18.95À1.1. We find that the X-ray emission from G18.95À1.1 is predominantly thermal, heavily absorbed with a column density around 10 22 atoms cm À2 , and can be best described by an nonequilibrium ionization (NEI) model with a temperature around 0.9 keV and an ionization timescale of 1:1 Â 10 10 cm À3 s À1. We find only marginal evidence for nonsola…

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