论文标题
不寻常的主动星系H1821+643和周五类星体难以捉摸的性质
The unusual active galaxy H1821+643 and the elusive nature of FRI quasars
论文作者
论文摘要
凉爽核心群集H1821+643的黑洞的中等自旋估计激励了关于该物体起源和进化的故事，这是因为Blundell和Rawlings在二十年前的作品以来，这是一个在二十年前的作品，这是一个巨大的黑洞，即以Fri Jet的价格获得巨大的黑洞。在我们的2010年模型中解释了这种难以捉摸的属性组合，在我们的2010年模型中，我们证明了它是包括X形射电星系的小参数空间的一部分。作为一个从未经历过反向旋转阶段的积聚的黑洞，H1821+643受到理论的限制，以生成0.1至约0.7之间的自旋值的射流，而周五射流的范围较小。这种黑洞的反馈不受倾斜的喷射，这就是为什么在这个集群环境中恒星形成率很高的原因。预测是H1821+643在无飞的数百万年之内。
The moderate spin estimate for the black hole at the center of the cool core cluster H1821+643 motivates the completion of a story about this object's origin and evolution that was in the making since the work by Blundell and Rawlings over two decades ago as the first example of a massive black hole accreting at near Eddington rates with an FRI jet. This elusive combination of properties was explained in our 2010 model where we showed it to be part of a small parameter space that includes X shaped radio galaxies. As an accreting black hole that never experienced a counterrotating phase, H1821+643 is constrained by theory to produce a jet for spin values between 0.1 and about 0.7 and an FRI jet for a slightly smaller range. The feedback from such a black hole is not subject to a tilted jet and is why star formation rates remain high in this cluster environment. The prediction is that H1821+643 is within millions of years of becoming jetless.
