H I structure and the soft x-ray background
The observed anticorrelation between diffuse soft x-ray flux and H I column density has been explained as absorption of soft x-rays produced in a hot galactic halo, assuming that the neutral interstellar material is sufficiently clumped to reduce the soft x-ray absorption cross section by a factor of two to three a 21-cm emission line study of H I column density variations was made at intermediate and high galactic latitudes as 21' and 10' spatial resolution. The results, in combination with other data, appear to rule out the hypothesis that clumping of neutral interstellar mater on any angular scale significantly reduces x-ray absorption cross sections in the 0.13 to 0.28 keV energy range. It is concluded therefore, that the observed anticorrelation is not primarily a consequence of absorption of soft x-rays produced in a hot galactic halo.
- Research Organization:
- Case Western Reserve Univ., Cleveland, OH (USA)
- OSTI ID:
- 6695845
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION
BACKGROUND RADIATION
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
EMISSION SPECTRA
GALAXIES
H1 REGIONS
INTERSTELLAR SPACE
IONIZING RADIATIONS
MILKY WAY
RADIATIONS
SOFT X RADIATION
SPACE
SPECTRA
X RADIATION