Astronomers discover that a well-known X-ray binary is actually a hidden ultraluminous X-ray source

Astronomers discover that a well-known X-ray binary is actually a hidden ultraluminous X-ray source
Astronomers have uncovered that a well-known X-ray binary, whose exact nature has been a mystery to scientists until now, is actually a hidden ultraluminous X-ray source. The study is published in Nature Astronomy.
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