Galactic background radio waves

Japanese: 銀河バックグラウンド電波 - ぎんがばっくぐらうんどでんぱ
Galactic background radio waves

...However, in many cases, radio waves originating from individual sources such as supernova remnants, the Sun, and planets are excluded, and also radio waves in the spectrum such as hydrogen 21 cm radio waves and molecular spectral lines are often excluded. In such cases, they are sometimes called galactic background radio waves to distinguish them. When viewed from Earth, they consist of a "disk component" that is distributed along the galactic plane (Milky Way), a "halo component" that is thought to be emitted from the gas surrounding the galaxy, and a component that surrounds the center of the galaxy.

*Some of the terminology that refers to "Galactic background radio waves" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…ただし,多くの場合,超新星残骸,太陽,惑星など個々の電波源に起因するものは除外し,また,水素21cm電波,分子スペクトル線などのスペクトルの電波も除外することが多い。そのような場合にはとくに区別して銀河バックグラウンド電波と呼ぶこともある。 地球から見ると銀河面(天の川)に沿って分布する〈円盤成分〉と,銀河を大きく取り巻くガスから放射されると考えられる〈ハロー成分〉および銀河中心を取り巻く成分とからなる。…

※「銀河バックグラウンド電波」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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