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- W2479084911 abstract "The very large majority of the galaxies selected in X-ray surveys are active galaxies (e.g. narrow emission line galaxies, Seyfert galaxies etc.). There are however a few examples of normal galaxies, which are sometimes characterized by an X-ray luminosity in excess of what is expected on the basis of their optical appearance. A closer look at these galaxies may reveal the presence of a mini active nucleus or of other processes responsible for the powerful X-ray emission. Here we consider the normal galaxies selected in the Medium Sensitivity Survey and we discuss the properties of the most X-ray luminous one. We show that this object, which has an optical spectrum lacking any evidence of nuclear activity and which has a radio luminosity typical of early type galaxies, is indeed a peculiar galaxy surrounded by a hot (>2 keV) halo extending out to a radius of 300 kpc, implying a total mass of ∼3 × 10 13 M ⊙ ." @default.
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- W2479084911 date "1987-01-01" @default.
- W2479084911 modified "2023-10-18" @default.
- W2479084911 title "X-Ray Emission as Evidence of Activity in Otherwise “Normal” Galaxies" @default.
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- W2479084911 doi "https://doi.org/10.1017/s0074180900155494" @default.
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