Definition of accretion disc in English:

Share this entry

accretion disc

(US accretion disk)

noun

Astronomy
A rotating disc of matter formed by accretion around a massive body (such as a black hole) under the influence of gravitation.
Example sentences
  • The Blandford-Znajek theory implies that energy flows to particle jets emanating perpendicularly from the accretion disk in certain supermassive black hole systems called quasars.
  • As the matter in the accretion disk spirals toward the black hole it is heated to very high temperatures and emits strong highly energetic electromagnetic radiation.
  • A Type Ia supernova, on the other hand, if the widely accepted model is correct, involves a white dwarf star, an orbiting companion, and an accretion disk - an inherently asymmetric configuration.
Share this entry
 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.