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Cygnus X-1 (abbreviated Cyg X-1) [11] is a galactic X-ray source in the constellation Cygnus and was the first such source widely accepted to be a black hole. [12] [13] It was discovered in 1964 during a rocket flight and is one of the strongest X-ray sources detectable from Earth, producing a peak X-ray flux density of 2.3 × 10 −23 W/(m 2 ⋅Hz) (2.3 × 10 3 jansky).
"Cygnus X-1" is a two-part song series by Canadian progressive rock band Rush. The first part, "Book I: The Voyage" , is the last song on the 1977 album A Farewell to Kings , and the second part, "Book II: Hemispheres" , is the first song on the following album, 1978's Hemispheres .
Side one is occupied by "Cygnus X-1 Book II: Hemispheres", an 18-minute sequel to "Cygnus X-1 Book I: The Voyage" on A Farewell to Kings which had ended on a cliffhanger.[14] [11] Book I concerns an unnamed space explorer who travels to Cygnus X-1, a black hole, in its space ship and is pulled into it.
Sh 2-101, at least in the field seen from Earth, is in close proximity to microquasar Cygnus X-1, site of one of the first suspected black holes. Cygnus X-1 is located about 15′ west of Sh 2-101. The companion star of Cygnus X-1 is a spectral class O9.7 Iab supergiant with a mass of 21 solar masses and 20 times the radius of the Sun.
On the live album Rush in Rio, an abridged version of "Cygnus X-1" is performed as an instrumental. The piece consists of the "Prologue" section of the song, without the spoken introduction. The piece consists of the "Prologue" section of the song, without the spoken introduction.
He identified the first clear candidate for a black hole, Cygnus X-1, with his colleague Louise Webster. He studied Mathematics and Physics at the universities of Oxford and Rochester . In 1962, he took an eight-week summer residential course supporting researchers at the Royal Greenwich Observatory in Herstmonceux and at the end was offered a ...
Cygnus X-1 is an X-ray source in the constellation Cygnus. Cygnus X-1 may also refer to: "Cygnus X-1" (song series), a two-part song by the band Rush
After more observations confirmed the results, by 1973, the astronomical community generally recognized black hole Cygnus X-1, lying in the plane of the Milky Way galaxy at a galactic latitude of about 3 degrees. [2] [9] [10] [11]