Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...237..681b&link_type=abstract
Astrophysical Journal, Part 1, vol. 237, May 1, 1980, p. 681-685.
Astronomy and Astrophysics
Astrophysics
29
Astronomical Models, Coronas, Galactic Structure, X Ray Sources, Disk Galaxies, Hydrodynamics, Mathematical Models, Milky Way Galaxy, Neutral Gases, Spiral Galaxies
Scientific paper
The dynamics of hot coronal gas in two models were numerically simulated in order to evaluate the X-ray emission properties of coronae. Nearly all of the detectable X-ray emission occurs below 1 keV. For the 0.53-0.87 keV band, the X-ray scale height is one-fifth to one-third the density scale height, if the temperature at the base of the corona exceeds 1.5-million K; nearly all the X-ray emission is provided by 10-20% of the coronal mass. In some disk-bulge galaxies, the extended X-ray emission will reach a maximum outside the galactic center. For an edge-on galaxy, absorption by neutral gas may render the disk less luminous than the corona. Edge-on spiral galaxies as far as the Virgo cluster may be detected with the Imaging Proportional Counter on the Einstein telescope.
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