论文标题
星际培养基和银河流出的弥漫性热等离子体
Diffuse Hot Plasma in the Interstellar Medium and Galactic Outflows
论文作者
论文摘要
我们总结了星系中星际培养基（ISM）的观察结果，主要由三个阶段组成：冷原子或分子气体和云，温暖的中性或离子化气体以及热离子气体。这三个气相构成热稳定状态，而干扰是由引力和恒星反馈以光子和恒星风和超新星冲击的形式引起的。热等离子体主要在恒星气泡，超级泡沫和银河流出/喷泉中发现，并且通常动态不稳定并且过度压力。此外，在银河核区域中，对超质量黑洞的积聚会导致恒星形成，流出，额外的加热和宇宙射线的加速。
We summarise observations and our current understanding of the interstellar medium (ISM) in galaxies, which mainly consists of three phases: cold atomic or molecular gas and clouds, warm neutral or ionised gas, and hot ionised gas. These three gas phases form thermally stable states, while disturbances are caused by gravitation and stellar feedback in form of photons and shocks in stellar winds and supernovae. Hot plasma is mainly found in stellar bubbles, superbubbles, and Galactic outflows/fountains and is often dynamically unstable and is over-pressurised. In addition, in galactic nuclear regions, accretion onto the supermassive black hole causes enhanced star formation, outflows, additional heating, and acceleration of cosmic rays.
