Cygnus X-1
Cygnus X-1 (abbreviated Cyg X-1) is a galactic X-ray source in the constellation Cygnus and was the first such source widely accepted to be a black hole. It was discovered in 1964 during a rocket flight and is one of the strongest X-ray sources seen from Earth, producing a peak X-ray flux density of 2.3×10−23 Wm−2 Hz−1 (2.3×103 Jansky). It remains among the most studied astronomical objects in its class. The compact object is now estimated to have a mass about 21.2 times the mass of the Sun and has been shown to be too small to be any known kind of normal star, or other likely object besides a black hole. If so, the radius of its event horizon has 300 km "as upper bound to the linear dimension of the source region" of occasional X-ray bursts lasting only for about 1 ms.
Wikipage disambiguates
2011 in science3U 1956+35A0620-00A Brief History of TimeA Sky Full of GhostsAstronomical naming conventionsBetty Louise TurtleBinary mass functionBinary starBlack holeBlack holes in fictionCanadaChandra_X-ray_ObservatoryCosmos:_A_Spacetime_OdysseyCyg X-1CygnusCygnus (constellation)Cygnus X-1 (disambiguation)Cygnus X-1 (song series)Cygnus X1Cygnus X (music group)Deneb in fictionEpsilon AurigaeFar GateGamma (satellite)George K. MileyGreat AnnihilatorGreen Bank InterferometerHD-226868HD226868HDE-226868HDE226868HDE 226868HD 226868Herbert GurskyHigh Energy Astronomy Observatory 1International Ultraviolet ExplorerIsaac Newton Telescope
Link from a Wikipage to another Wikipage
primaryTopic
Cygnus X-1
Cygnus X-1 (abbreviated Cyg X-1) is a galactic X-ray source in the constellation Cygnus and was the first such source widely accepted to be a black hole. It was discovered in 1964 during a rocket flight and is one of the strongest X-ray sources seen from Earth, producing a peak X-ray flux density of 2.3×10−23 Wm−2 Hz−1 (2.3×103 Jansky). It remains among the most studied astronomical objects in its class. The compact object is now estimated to have a mass about 21.2 times the mass of the Sun and has been shown to be too small to be any known kind of normal star, or other likely object besides a black hole. If so, the radius of its event horizon has 300 km "as upper bound to the linear dimension of the source region" of occasional X-ray bursts lasting only for about 1 ms.
has abstract
Cygnus X-1 (Cyg X-1 bezala lab ...... 8.000 argi-urte ingurura dago.
@eu
Cygnus X-1 (abbreviated Cyg X- ...... cepted from indirect evidence.
@en
Cygnus X-1 (abbreviato in Cyg ...... ggi in larga parte confermata.
@it
Cygnus X-1 (abreviado como Cyg ...... os 6000 años luz de la Tierra.
@es
Cygnus X-1 (disingkat Cyg X-1) ...... erdasarkan bukti tak langsung.
@in
Cygnus X-1 (kortform Cyg X-1) ...... l med en stjärnmassas storlek.
@sv
Cygnus X-1 (pol. Łabędź X-1) – ...... ia) przyznał rację Thorne'owi.
@pl
Cygnus X-1 is een röntgendubbe ...... öntgenstraling gaat uitzenden.
@nl
Cygnus X-1 je zdroj rentgenové ...... hvězda v souhvězdí Labutě je .
@cs
Cygnus X-1 és la font de raigs ...... es de la supergegant al forat.
@ca
Link from a Wikipage to an external page
Wikipage page ID
page length (characters) of wiki page
Wikipage revision ID
1,022,222,601
Link from a Wikipage to another Wikipage
appmag v
b-v
+0.81
@en
class
O9.7Iab
@en
colwidth
constell
epoch
J2000
@en
luminosity
mass
p error
parallax
prop mo dec
−7.15
@en
prop mo ra
−3.37
@en
radial v
−13
@en
rotation
u
km
@en
u-b
−0.30
@en
variable
wikiPageUsesTemplate
years
subject
hypernym
comment
Cygnus X-1 (Cyg X-1 bezala lab ...... 8.000 argi-urte ingurura dago.
@eu
Cygnus X-1 (abbreviated Cyg X- ...... s lasting only for about 1 ms.
@en
Cygnus X-1 (abbreviato in Cyg ...... ,8 volte quella del Sole (M⊙).
@it
Cygnus X-1 (abreviado como Cyg ...... os 6000 años luz de la Tierra.
@es
Cygnus X-1 (disingkat Cyg X-1) ...... ya diperkirakan sebesar 44 km.
@in
Cygnus X-1 (kortform Cyg X-1) ...... et ca 1 000 gånger per sekund.
@sv
Cygnus X-1 (pol. Łabędź X-1) – ...... kością 800 obrotów na sekundę.
@pl
Cygnus X-1 is een röntgendubbe ...... het bestaan van zwarte gaten.
@nl
Cygnus X-1 je zdroj rentgenové ...... hvězda v souhvězdí Labutě je .
@cs
Cygnus X-1 és la font de raigs ...... es de la supergegant al forat.
@ca
label
Cygnus X-1
@ca
Cygnus X-1
@cs
Cygnus X-1
@de
Cygnus X-1
@en
Cygnus X-1
@es
Cygnus X-1
@eu
Cygnus X-1
@fr
Cygnus X-1
@in
Cygnus X-1
@it
Cygnus X-1
@nl
sameAs
wasDerivedFrom
isPrimaryTopicOf
name
Cygnus X-1/HDE 226868
@en