Other
Scientific paper
Mar 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...212..427l&link_type=abstract
Astrophysical Journal, Part 1, vol. 212, Mar. 1, 1977, p. 427-437. Research supported by the Senior Hays Fulbright Program and
Other
19
Galactic Structure, Plasma Clouds, Supernova Remnants, X Ray Sources, Background Radiation, Energy Spectra, Hydrogen Clouds, Interstellar Gas, Magellanic Clouds, Particle Density (Concentration)
Scientific paper
Four enhanced regions of diffuse X-ray emission are studied in the 0.15-2 KeV band. Two regions are consistent with clouds of plasma with a temperature of 1 million K about 50 pc in diameter at a distance of 150 pc. These clouds require a particle density of only a factor of 3 above an ambient hot component which may fill a substantial portion of the galactic disk in the vicinity of the sun. Another region near Eridanus is consistent with a low integrated amount of atomic hydrogen along the direction of observation, thereby permitting a greater path length of plasma to contribute to the observed flux. Finally, an extended region in Centaurus shows a temperature of about 20 million K and may be an old supernova remnant expanding into a low-density region of the galactic disk.
Garmire Gordon P.
Long Knox S.
Moore Wayne E.
Patterson John R.
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