The end point of the collapse and relaxation of a protogalaxy is a dark matter halo, inside of which the baryonic gas is in hydrostatic equilibrium at a temperature of typically a few million degrees.
原星系塌缩与松弛最终点就是黑暗物质晕,里面有处于流体静
平衡
重子气体,一般温度约数百万度。