Now a new analysis of the system by Daniel D’Orazio of Columbia University and his colleagueshas added weight to that conclusion. Mr. D’Orazio, a graduate student, and his colleaguesZoltan Haiman and David Schiminovich propose that most of the light from the quasar is comingfrom a massive disc of gas surrounding the smaller of the two black holes.
现在,哥伦比亚大学(Columbia University)的丹尼尔·德奥拉齐奥(Daniel D’Orazio)及其同事对这一星系进行的新分析,给上述结论增添了份量。研究生德奥拉齐奥和同事佐尔坦·海曼(Zoltan Haiman)、戴维·希米诺维奇(David Schiminovich)提出,这颗类星体发出的光多数来自围绕着其中一个较小黑洞的硕大的吸积盘。
As the black holes and their attendant discs swing around each other at high speeds, the lightfrom the disk that is coming toward us gets a boost from relativistic effects – a so-calledDoppler boost — the same way a siren gets louder and more high-pitched as it approaches,giving rise to a periodic increase in brightness every five years.
这两个黑洞及其吸积盘相互高速旋转时,来自这个吸积盘的光线在对着地球的方向会因相对运动产生的多普勒效应而加强——好比对面驶来的火车鸣笛声会变得更大声、更尖细一样——令它每隔五年会周期性地增大亮度。
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