File:Quasar HE 1104-1805.jpg

Summary

Description
English: This picture shows a quasar that has been gravitationally lensed by a galaxy in the foreground, which can be seen as a faint shape around the two bright images of the quasar. Observations of one of the images show variations in colour over time. This is caused by stars within the lens galaxy passing through the path of the light from the quasar, magnifying the light from different parts of the quasar’s accretion disc as they move. This has allowed a team of scientists to reconstruct the colour and temperature profile of the accretion disc with unprecedented precision. The level of detail involved is equivalent to being able to study individual grains of sand on the surface of the Moon while standing on Earth.
Date
Source http://www.spacetelescope.org/images/heic1116a/
Author NASA, ESA and J.A. Muñoz (University of Valencia)
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w:en:Creative Commons
attribution
This file is licensed under the Creative Commons Attribution 4.0 International license.
Attribution:
NASA, ESA and J.A. Muñoz (University of Valencia)
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Category:CC-BY-4.0#Quasar%20HE%201104-1805.jpg
Other versions Derivative works of this file:  Quasar barnstar 1.pngCategory:Files with derivative versions
Category:Hubble images of quasars Category:Hubble images of gravitational lensing
Category:CC-BY-4.0 Category:Files with derivative versions Category:Hubble images of gravitational lensing Category:Hubble images of quasars