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ACCRETION DISC [1 record]

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Record 1 2002-11-13

English

Subject field(s)
  • Astronomy
CONT

... IUE [the International Ultraviolet Explorer space vehicle] measured the carbon abundance in the Cygnus Loop Supernova remnant and demonstrated the existence of accretion disks in dwarf novae.

Key term(s)
  • accretion disc

French

Domaine(s)
  • Astronomie
CONT

Au voisinage de l'étoile HDE 226 868, dans la constellation du Cygne, se trouve une radiosource que l'on a baptisé Cygnus X-1 et qui émet un flux intense de rayons X. L'émission s'expliquerait par la présence d'un trou noir en rotation. Celui-ci aspirerait la matière gazeuse de l'étoile qui s'enroulerait autour du trou noir, formant un disque d'accrétion dépassant 10 millions de degrés près de l'horizon, et permettant l'émission de rayonnement X.

Spanish

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