活かつ動どう銀ぎん河が核かく

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つ

ど

う

ぎ

ん

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Meanings

1

active galactic nucleus; AGN

Technical term in astronomy for the compact, highly luminous central region of a galaxy, powered by accretion onto a supermassive black hole.

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X

線せん

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放ほう

射しゃ

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いる

。

Strong X-rays are emitted from the active galactic nucleus.

この銀ぎん河がの中ちゅう心しんには活かつ動どう銀ぎん河が核かくが存そん在ざいすると考かんがえられている。

It is thought that an active galactic nucleus exists at the center of this galaxy.