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单词 active galactic nucleus
释义

Definition of active galactic nucleus in English:

active galactic nucleus

noun
Astronomy
  • A compact region at the centre of a galaxy which emits an abnormally large amount of radiation in one or more parts of the electromagnetic spectrum.

Origin

1960s; earliest use found in Astrophysical Journal.

Definition of active galactic nucleus in US English:

active galactic nucleus

noun
Astronomy
  • A compact region at the centre of a galaxy which emits an abnormally large amount of radiation in one or more parts of the electromagnetic spectrum.

Origin

1960s; earliest use found in Astrophysical Journal.

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更新时间:2024/10/19 8:58:22