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Ultraluminous X-Ray Sources

Fabrika, S. N.; Atapin, K. E.; Vinokurov, A. S. +1 more

Ultraluminous X-ray sources (ULXs) were identified as a separate class of objects in 2000 based on data from the Chandra X-Ray Observatory. These are unique objects: their X-ray luminosities exceed the Eddington limit for a typical stellar-mass black hole. For a long time, the nature of ULXs remained unclear. However, the gradual accumulation of d…