Hot Gas in Elliptical Galaxies

Details Hot Gas in Elliptical Galaxies Hot Gas in Elliptical Galaxies

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993pkas....8..199k&link_type=abstract

Publications of the Korean Astronomical Society, vol.8, no.1, p.199-206

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Scientific paper

We review recent systematic investigation of the X-ray spectra of early type galaxies by using the Einstein database and present new result by the ROSAT observations. The Einstein data suggested that the galaxies with low X-ray to optical luminosity ratio may have another very soft component. ROSAT observations confirm its presence and call for further study to understand the nature of this very soft emission. The X-ray bright galaxies have emission temperature of ~0.8keV and show radial gradients in the sense that X-ray emission is softer and more absorbed in the inner region.

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