Fichier:Accretion disk.jpg

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Fichier d’origine (3 000 × 2 400 pixels, taille du fichier : 679 kio, type MIME : image/jpeg)

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Description

Description
English: Artist's rendition of a black hole with an orbiting companion star that overflows its Roche lobe. Mass from the companion star is drawn towards the black hole, forming an accretion disk. GRO J1655-40 is the second so-called 'microquasar' discovered in our Galaxy. Microquasars are black holes of about the same mass as a star. They behave as scaled-down versions of much more massive black holes that are at the cores of extremely active galaxies, called quasars. Astronomers have known about the existence of stellar-mass black holes since the early 1970s. Their masses can range from 3.5 to approximately 15 times the mass of our Sun. Using Hubble data, astronomers were able to describe the black-hole system. The companion star had apparently survived the original supernova explosion that created the black hole. It is an aging star that completes an orbit around the black hole every 2.6 days. It is being slowly devoured by the black hole. Blowtorch-like jets (shown in blue) are streaming away from the black-hole system at 90 percent of the speed of light.
Date (released)
Source https://science.nasa.gov/asset/hubble/artists-view-of-black-hole-and-companion-star-gro-j1655-40
Auteur ESA, NASA, and Felix Mirabel (French Atomic Energy Commission and Institute for Astronomy and Space Physics/Conicet of Argentina)

Conditions d’utilisation


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Ce fichier est disponible selon les termes de la licence Creative Commons Attribution 4.0 International.
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  • de partager – de copier, distribuer et transmettre cette œuvre
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Sous les conditions suivantes :
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Cette image, qui provient de Hubble Site, a été vérifiée le 17 mai 2020 par le relecteur Green Giant, qui a confirmé qu'à cette date, elle était disponible sous les termes de cette licence.

Légendes

Ajoutez en une ligne la description de ce que représente ce fichier
Artist's View of Black Hole and Companion Star GRO J1655-40

Éléments décrits dans ce fichier

dépeint

disque d'accrétion

type MIME

image/jpeg

somme de contrôle

da19afbdec9668502d387f08435b13e7055edcc4

méthode ou standard de détermination : SHA-1

taille des données

695 507 octet

hauteur

2 400 pixel

largeur

3 000 pixel

Historique du fichier

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Date et heureVignetteDimensionsUtilisateurCommentaire
actuel26 avril 2019 à 16:17Vignette pour la version du 26 avril 2019 à 16:173 000 × 2 400 (679 kio)wikimediacommons>FriedrichKiefererBetter quality.

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