Cygnus X-1 Comparison Table

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Cygnus X-1 comparison table

Subject has primary mass is a kind of is an instance of has synonym has secondary mass has inclination has definition has distance has period has eccentricity

X-ray source celestial body A class of celestial objects whose dominant mechanism of energy dissipation is through X-ray emission. Galactic X-ray sources appear optically as starlike objects, peculiar in their ultraviolet intensity, variability (on time scales ranging from milliseconds to weeks), and spectral features. All known compact X-ray sources are members of close binary systems; a current popular model is mass accretion onto a compact object from a massive companion. (Four X-ray sources - all variable - are known to be associated with globular clusters.) The 21 known extended X-ray sources associated with clusters of galaxies seem to be clouds of hot gas trapped in the cluster's gravitational field.

Cygnus X-1 20 M_sun X-ray source 3U 1956+35 > 6 M_sun i ≈ 27° An X-ray source. The visible component is the ninth-magnitude supergiant HDE 226868 (O9.7 Iab). It has rapid night-to-night variations in spectral features. 2.5 kpc 5.5998 days e ≈ 0.06

Subject	has primary mass	is a kind of	is an instance of	has synonym	has secondary mass	has inclination	has definition	has distance	has period	has eccentricity
X-ray source		celestial body					A class of celestial objects whose dominant mechanism of energy dissipation is through X-ray emission. Galactic X-ray sources appear optically as starlike objects, peculiar in their ultraviolet intensity, variability (on time scales ranging from milliseconds to weeks), and spectral features. All known compact X-ray sources are members of close binary systems; a current popular model is mass accretion onto a compact object from a massive companion. (Four X-ray sources - all variable - are known to be associated with globular clusters.) The 21 known extended X-ray sources associated with clusters of galaxies seem to be clouds of hot gas trapped in the cluster's gravitational field.
Cygnus X-1	20 M_sun		X-ray source	3U 1956+35	> 6 M_sun	i ≈ 27°	An X-ray source. The visible component is the ninth-magnitude supergiant HDE 226868 (O9.7 Iab). It has rapid night-to-night variations in spectral features.	2.5 kpc	5.5998 days	e ≈ 0.06

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