Galactic Corona

Japanese: 銀河コロナ - ぎんがころな
Galactic Corona

...In addition, it is known that young forming stars and RS CVn type close binary star systems emit particularly strong X-ray radiation, and it is thought that magnetic fields play an important role in these as well.
[Galactic Corona (Galactic Halo)]
Galaxies, which are large groups of stars, also have coronas (called halos) that surround them. These are thought to be high-temperature plasma with magnetic fields leaking out from the galactic disk or active galactic nuclei, which are held back around the galaxy. When viewed with radio waves or X-rays, the presence of these coronas is particularly evident in galaxies moving at high speeds within a galaxy cluster, where some have a fluttering shape due to interactions with the gas within the cluster.

*Some of the terminology that refers to the "Galactic Corona" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…このほか,形成中の若い星やRS CVn型近接連星系がとくに強いX線放射をしていることがわかっているが,これらにおいても磁場が重要な役割を演じていると考えられている。
[銀河コロナ(銀河ハロー)]
 星の大集団である銀河にも,それを大きくとり巻くコロナ(ハローと呼んでいる)がある。これはやはり銀河円盤あるいは活動的な銀河核からもれ出た磁場をもつ高温プラズマが,銀河の周辺に引き止められているものと考えられており,電波やX線で見ると,とくに銀河団中を高速で運動する銀河などでは,銀河団内ガスとの相互作用によりなびいた形になっているものなどがあり,その存在がとくに顕著になっている。…

※「銀河コロナ」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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