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Accretion disk
Videos
An accretion disk is a structure formed by diffuse material in orbital motion around a massive central body. The central body is most frequently a star. Friction, uneven irradiance, magnetohydrodynami
The hot accretion disk of a black hole, showing the relativistic effects imposed on light when it is emitted in regions subject to extreme gravitation
The hot accretion disk of a black hole, showing the relativistic effects imposed on light when it is emitted in regions subject to extreme gravitation. This image is the result of NASA simulations and shows a view from outside the horizon of a Schwarzschild black hole.
Artist's view of a star with accretion disk (2013)
Artist's view of a star with accretion disk (2013)
Artist's conception of a black hole drawing matter from a nearby star, forming an accretion disk
Artist's conception of a black hole drawing matter from a nearby star, forming an accretion disk
HH-30, a Herbig–Haro object surrounded by an accretion disk
HH-30, a Herbig–Haro object surrounded by an accretion disk
Black hole
Videos
A black hole is an astronomical body so compact that its gravity prevents anything, including light, from escaping. Albert Einstein's theory of general relativity, which describes gravitation as the c
Accretion disk
…radiation depends on the central object's mass. Accretion disks of young stars and protostars radiate in the infrared; those around neutron stars and black holes in the X-ray part of the spectrum. The study of oscillation modes in accretion disks is referred to as diskoseismology. Accretion disks are a ubiquitous…
An image of the core region of Messier 87, a supermassive black hole, processed from an array of eight radio telescopes known as the EHT with colours
An image of the core region of Messier 87, a supermassive black hole, processed from an array of eight radio telescopes known as the EHT with colours indicating brightness temperature
The first simulated image of a black hole, published by Jean-Pierre Luminet in 1979 and featuring the characteristic shadow, photon sphere, and lensed
The first simulated image of a black hole, published by Jean-Pierre Luminet in 1979 and featuring the characteristic shadow, photon sphere, and lensed accretion disk. The disk is brighter on one side due to Doppler beaming.
Image by the Event Horizon Telescope of the supermassive black hole in the centre of Messier 87
Image by the Event Horizon Telescope of the supermassive black hole in the centre of Messier 87
Relativistic jets from the supermassive black hole in Centaurus A extend perpendicularly from the galaxy.
Relativistic jets from the supermassive black hole in Centaurus A extend perpendicularly from the galaxy.