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Cygnus X-1
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English
Etymology
From en Cygnus X 1. From being the first discovered discrete astronomical X-ray source (an X-ray star) located in the constellation of Cygnus.
Proper noun
A placename.
en astronomy physics star The first generally accepted and confirmed black hole. A black hole in a high-mass X-ray binary (HMXB) with a blue supergiant companion (HD 226868), located in the constellation Cygnus.
en astronomy physics star The high-mass X-ray binary star system containing this black hole and blue supergiant star.
Synonyms
mul Cyg X-1 abbreviation
Derived terms
mul Cyg X-1 abbreviation
en Black holes