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Accretion disk
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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
Accretion (astrophysics)
Videos
In astrophysics, accretion is the accumulation of matter into a massive object by gravitationally attracting more matter. If the matter is gaseous the result is an accretion disc. Accretion of solid m
Accretion disk
…material is excreted from the center outward onto the disk. They are formed from matter ejected from a star, and are often assosicated with Be stars. Accretion Astrophysical jet…
ALMA image of HL Tauri, a protoplanetary disk
ALMA image of HL Tauri, a protoplanetary disk
The visible-light (left) and infrared (right) views of the Trifid Nebula, a giant star-forming cloud of gas and dust located 5,400 light-years (1,700
The visible-light (left) and infrared (right) views of the Trifid Nebula, a giant star-forming cloud of gas and dust located 5,400 light-years (1,700 pc) away in the constellation Sagittarius
Infrared image of the molecular outflow from an otherwise hidden newborn star HH 46/47
Infrared image of the molecular outflow from an otherwise hidden newborn star HH 46/47
When the lower-mass star in a binary system enters an expansion phase, its outer atmosphere may fall onto the compact star, forming an accretion disk
When the lower-mass star in a binary system enters an expansion phase, its outer atmosphere may fall onto the compact star, forming an accretion disk