Computer Science
Scientific paper
Jun 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977cosp.meetq....t&link_type=abstract
COSPAR, Plenary Meeting, 20th, Tel Aviv, Israel, June 7-18, 1977, Paper. 28 p.
Computer Science
Diffuse Radiation, Interstellar Matter, Plasma Radiation, X Ray Sources, Cosmic Plasma, Milky Way Galaxy, Supernova Remnants
Scientific paper
Observations of the diffuse soft X-ray component in the energy range from 0.1 to 2.0 keV are discussed in relation to interstellar matter. It is suggested that the most likely origin of these soft X-rays is thermal emission from a tenuous interstellar plasma at a temperature of the order of 1 million K. General features of the brightness distribution of the diffuse soft X-ray background are reviewed, and limits on the extragalactic component are considered. It is shown that only thermal emission from a hot plasma within the Galaxy can account for the observations. Evidence for the presence of such a hot plasma in interstellar space is given, a supernova mechanism for hot-plasma production is described, and regions of soft X-ray enhancement are identified which may be associated with supernova remnants. The soft X-ray flux from individual regions of hot plasma in interstellar space is analyzed along with some properties of a soft-X-ray-emitting region.
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