Abstract
view Abstract Citations (257) References (58) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Time-dependent radiative cooling of a hot, diffuse cosmic gas, and the emergent X-ray spectrum. Shapiro, P. R. ; Moore, R. T. Abstract A new, detailed calculation is presented of the nonequilibrium radiative cooling of an optically thin low-density (n < lO cm-3) interstellar gas which is suddenly shock-heated to 106 K and cools to 1O K. Results include the ionization structure, radiative energy-loss, and X-ray spectrum from 0.5 to 70 A for the cooling gas under a variety of initial conditions. It is found that the initial condition of the gas is unimportant only if the gas is preionized. These results are relevant to the diffuse galactic soft X-ray background at 0.25 keV, the observation by Copernicus of interstellar 0 vi, and studies of the late radiative phase of supernova remnants. Subject headings: interstellar: matter - nebulae: supernova remnants - X-rays: general Publication: The Astrophysical Journal Pub Date: July 1976 DOI: 10.1086/154515 Bibcode: 1976ApJ...207..460S Keywords: Gas Cooling; Interstellar Gas; Radiant Cooling; Shock Heating; X Ray Spectra; High Temperature Plasmas; Nonequilibrium Conditions; Oxygen Spectra; Rarefied Gases; Supernova Remnants; Temperature Distribution; Astrophysics full text sources ADS |
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