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Quasars & Active Galaxies
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Quasars & Active Galaxies
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Quasars & Active Galaxies
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Quasars & Active Galaxies
Animations & Video: Quasars & Active Galaxies
Page 123
Click for high-resolution animation
1. Black Hole Animation
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This animation illustrates the activity surrounding a black hole. While the matter that has passed the black hole's "event horizon" can't be seen, material swirling outside this threshold is accelerated to millions of degrees and radiates in X-rays. At the end of the animation, the black hole is shown shrouded in a cloud of gas and dust, obscuring it from most angles at wavelengths other than the X-rays picked up by the Chandra X-ray Observatory.
[Runtime: 0:27]
View Stills
(NASA/CXC/A.Hobart)

Click for high-resolution animation
2. Illustrations of Black Hole Eclipse
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These artist's representations, which are not to scale, explain how a supermassive black hole and the hot gas disk around it are eclipsed. The first illustration shows how light from the bright disk surrounding the black hole can directly reach Chandra. The second illustration demonstrates how this light can be blocked by a dense cloud of gas, which causes only reflected light from the disk to reach Chandra.
[Runtime: 0:15]
View Stills
(NASA/CXC/M.Weiss)

Related Chandra Images:

Click for high-resolution animation
3. Optical and X-ray Images of NGC 1365
QuicktimeMPEG Beginning with the optical image of NGC 1365, the view then changes to reveal Chandra's image of the central region. The bright source in the middle of the X-ray image is generated by a disk of gas about to fall into a supermassive black hole. When a dense cloud within NGC 1365 passed in front of the black hole and disk, high-energy X-rays from the disk were blocked. This allowed astronomers to measure the size of the disk.
[Runtime: 0:10]
(X-ray: NASA/CXC/CfA/INAF/Risaliti; Optical: ESO/VLT)

Related Chandra Images:

Page 123