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High Quality Content by WIKIPEDIA articles! A super soft X-ray source (SSXS, or SSS) is an astronomical source of very low energy X-rays. Soft X-rays have energies in the 0.09 to 2.5 keV range, whereas hard X-rays are in the 1-20 keV range. SSXSs are in most cases only detected below 0.5 keV, so that within our own galaxy they are usually hidden by interstellar absorption in the galactic disk. They are readily evident in external galaxies, with ~10 found in the Magellanic Clouds and at least 15 seen in M31.
EditorLambert M. Surhone
EditorMiriam T. Timpledon
EditorSusan F. Marseken
Super Soft X-ray Source
Lambert M. Surhone
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