APOD: 2020 August 25 B Visualization: A Black Hole Accretion Disk
Explanation:
What would it look like to circle a black hole?
If the
black hole was surrounded by a
swirling disk of glowing and accreting gas,
then the great gravity of the black hole would
deflect light
emitted by the disk to make it look very unusual.
The
featured animated video gives a visualization.
The video starts with you, the observer, looking toward the
black hole from just above the plane of the accretion
disk.
Surrounding the central
black hole is a thin circular image of the orbiting disk that marks the position
of the
photon sphere --
inside of which lies the black hole's
event horizon.
Toward the left, parts of the large main image of the disk
appear brighter
as they move toward you.
As the video
continues, you loop over the
black hole, soon looking down from the top,
then passing through the disk plane on the far side,
then returning to your
original vantage point.
The accretion disk does some interesting
image inversions -- but never appears flat.
Visualizations such as this are particularly relevant today as
black holes are being imaged
in unprecedented detail by the
Event Horizon Telescope.
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NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
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Publikacii s klyuchevymi slovami:
black hole - accretion disk - chernye dyry - akkrecionnyi disk
Publikacii so slovami: black hole - accretion disk - chernye dyry - akkrecionnyi disk | |
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