Their model suggests that the black holes are orbiting each other at a distance of some 200billion miles, less than a tenth of a light-year, a cosmic whisker. At that distance the black holeswould be rapidly losing energy by radiating gravitational waves and could spiral together intothe final bang in as little as 100,000 years, Dr. Haiman said, depending on their relative masses.
他们的模型显示,两个黑洞在相互环绕,之间的距离约为2000亿英里,不到0.1光年。这在宇宙中可谓紧密相连。海曼称,相距这么近的话,这两个黑洞应当以发出引力波的形式快速丧失能量,并且可能会最快在10万年后最终相撞。
“Basically, the more massive the holes, the faster gravitational waves drive them together,and we do require them to be as massive as allowed to be, he said in an email. For their modelto hold up, the larger of the black holes has to be a billion solar masses or more.
“基本上,双黑洞质量越大,引力波将他们拉到一起的速度越快,而我们的研究的确假定他们在允许的范围内质量尽可能地大,他在邮件中写道。他们的模型要想成立,双黑洞中较大的那个的质量至少得相当于10亿个太阳。
E. Sterl Phinney, a Caltech astronomer and expert on supermassive black holes currently onsabbatical at Radboud University in the Netherlands, agreed that Dr. Haiman’s model explainsthe quasar variations. “So Occam’s razor makes it attractive, he said in an email, referring tothe long-held principle that physicists should adopt the simplest theory that fits the facts.
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