Les informations le concernant sont affichées dans cette page de description qui est copiée ci-dessous.
Commons est un serveur de fichiers sous licence libre. Vous pouvez aider(procédure).
Description
DescriptionA binary black hole.jpg
English: Artist's impression of the black holes studied by the astronomers, using ULTRACAM attached to ESO's Very Large Telescope. The systems — designated Swift J1753.5-0127 and GX 339-4 — each contain a black hole and a normal star separated by a few million kilometres. That's less than 10 percent of the distance between Mercury and our Sun. Because the two objects are so close to each other, a stream of matter spills from the normal star toward the black hole and forms a disc of hot gas around it. As matter collides in this so-called accretion disc, it heats up to millions of degrees. Near the black hole, intense magnetic fields in the disc accelerate some of this hot gas into tight jets that flow in opposite directions away from the black hole. The orbital period of Swift J1753.5-0127 — just 3.2 hours — is the fastest found for a black hole. The orbital period of GX 339-4, by contrast, is about 1.7 days.
This media was created by the European Southern Observatory (ESO). Their website states: "Unless specifically noted, the images, videos, and music distributed on the public ESO website, along with the texts of press releases, announcements, pictures of the week, blog posts and captions, are licensed under a Creative Commons Attribution 4.0 International License, and may on a non-exclusive basis be reproduced without fee provided the credit is clear and visible." To the uploader: You must provide a link (URL) to the original file and the authorship information if available.
de partager – de copier, distribuer et transmettre cette œuvre
d’adapter – de modifier cette œuvre
Sous les conditions suivantes :
paternité – Vous devez donner les informations appropriées concernant l'auteur, fournir un lien vers la licence et indiquer si des modifications ont été faites. Vous pouvez faire cela par tout moyen raisonnable, mais en aucune façon suggérant que l’auteur vous soutient ou approuve l’utilisation que vous en faites.
https://creativecommons.org/licenses/by/4.0CC BY 4.0 Creative Commons Attribution 4.0 truetrue
Légendes
Ajoutez en une ligne la description de ce que représente ce fichier
Ce fichier contient des informations supplémentaires, probablement ajoutées par l'appareil photo numérique ou le numériseur utilisé pour le créer.
Si le fichier a été modifié depuis son état original, certains détails peuvent ne pas refléter entièrement l'image modifiée.
Déclaration des droits d’auteur en ligne
État des droits d’auteur
État des droits d’auteur non défini
Crédit ou fournisseur
ESO/L. Calçada
Source
European Southern Observatory
Conditions d’utilisation
Creative Commons Attribution 3.0 Unported license
Titre court
A binary black hole
Titre de l’image
Artists impression of the black holes studied by the astronomers, using ULTRACAM attached to ESO's Very Large Telescope. The systems— designated Swift J1753.5-0127 and GX 339-4 — each contain a black hole and a normal star separated by a few million kilometres. That's less than 10 percent of the distance between Mercury and our Sun. Because the two objects are so close to each other, a stream of matter spills from the normalstar toward the black hole and forms a disc of hot gas around it. As matter collides in this so-called accretion disc, it heats up to millions of degrees. Near the black hole, intense magnetic fields in the disc accelerate some of this hot gas into tight jets that flow in opposite directions away from the black hole. The orbital period of Swift J1753.5-0127 — just 3.2 hours — is the fastest found for a black hole. The orbital period of GX 339-4, by contrast, is about 1.7 days. Credit: ESO/L. Calçada