Microquasar
Sign in to savethumb|Artist's impression of the microquasar SS 433 A microquasar, a smaller version of a quasar, is a compact region surrounding a stellar black hole with a mass several times that of its companion star, observable in sufficient detail, in our own or nearby galaxy. The matter being pulled from the companion star forms an accretion disk around the black hole. This accretion disk may become so hot, due to friction, that it begins to emit X-rays. The disk also projects narrow streams or "jets" of subatomic particles at near-light speed, generating a strong radio wave emission.
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En astronomie, un microquasar est une étoile binaire contenant un trou noir, et qui produit des jets d'une vitesse proche de la vitesse de la lumière.
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