two correlations have been raised and sustained by observational values, which are precession period - absolute magnitude correlation and black hole mass - precession cone semi-angle correlation;
提出两个关系,即进动周期—绝对星等的关系和黑洞质量—进动锥角的关系;
eventually, like a ripening fruit, the galactic mass gets bigger until its ratio to the black hole mass gets to what astronomers have observed in nearby galaxies.
许多天文学家认为,这个比率可以提供一个线索,透露出星系与黑洞形成的先后关系。
most black hole mass seems to come from direct consumption (called accretion) of gas, indicating that a black hole needs a surrounding galaxy to grow.
大多数黑洞聚集物看起来是直接从气体(叫做沖击层)的消耗中间来的,这表明一个黑洞的成长需要周围有一个星系。