Linked from
The 17 pages that link to X-ray binary, each with the reason it gives.
Cygnus X-1Narrower topic: Cygnus X-1 is a massive-star member of this broader class.
UhuruNarrower topic: Many sources catalogued by Uhuru belong to this class.
Einstein ObservatoryRelated: The observatory mapped stellar X-ray binaries across the Galaxy.
47 TucanaeBroader topic: Close stellar encounters in 47 Tucanae can form X-ray-emitting binaries.
XMM-NewtonRelated: Long observations track the changing X-ray emission of accreting compact stars.
X-ray pulsarNarrower topic: Many X-ray pulsars are powered by mass transfer within such systems.