查看“Diffuse ionized gas”的源代码

==银河系中的DIG==
*Referred to as the Reynolds layer, or warm ionized medium (WIM);  
*This warm (10^4 K), diffuse (n ~ 0.2 cm~3) gas fills 20% of the disk volume and accounts for most of the mass of ionized gas(90 percent).
*In terms of energetics, the Galactic WIM requires at least 10^42 ergs s~1 to remain ionized. This power is more than can be comfortably supplied by supernova shocks, but significantly less than the Lyman continuum luminosity of massive stars.
*[http://iopscience.iop.org/article/10.1086/306232/meta]