You can actually so something very similar for a black hole's accretion disk.

利用类似的方法可以算出黑洞吸积盘的半径。

Its mass fell in towards the black hole forming an accretion disk.

恒星的物质形成了黑洞的吸积盘。

Assuming it's spinning in the same direction as the matter in the accretion disk.

这是在黑洞自旋与吸积盘旋转方向相同的情况下。

The neutron star or black hole accretes matter from the star, creating a high-temperature accretion disk and relativistic jets.

中子星或黑洞吸积恒星的物质产生高温的吸积盘及相对论性的喷流。

They'd swarm in an orbit around a black hole, perhaps on the plane of its accretion disk, but farther out.

它们沿着环绕黑洞的轨道成群移动，远离吸积盘，但与其保持在同一平面上。

But this method only works if the radiation from the black hole is dominated by black-body radiation from the accretion disk.

但是这种方法只能在吸积盘为主要的黑体辐射时使用。

Accretion disks of material spiraling into black holes give off X-rays.

螺旋状进入黑洞的吸积盘会发出 X 射线。

So when you're looking at a black hole that is feeding, the innermost edge of the accretion disk is at r-isco.

当看到正在吞噬恒星的黑洞时，吸积盘内边缘就是ISCO。

Many exoplanets' star systems are flat, a lot of galaxies are flat, black hole accretion disks are flat, Saturn's rings are flat, etc.

很多系外行星的恒星系统是平的，许多星系是平的，黑洞吸积盘是平的，土星环是平的，等等。

Active galaxies can look pretty different from each other, and we now think that's due to our viewing angle on their accretion disk.

活动星系之间可能看起来非常不同，我们现在认为这是由于我们观察它们吸积盘的角度不同造成的。

So the accretion disk is nearly sixty  times more violent than a burning star.

因此，吸积盘的剧烈程度几乎比燃烧恒星的剧烈程度高出 60 倍。

The first was from x-ray astronomy as the radiation from the accretion disk is mostly x-ray  radiation.

第一个来自 X 射线天文学，因为来自吸积盘的辐射主要是 X 射线辐射。

If the accretion disk is tipped a bit to out line of sight we see more optical and high energy light from it.

如果吸积盘向我们的视线外倾斜一点，我们就能从它那里看到更多的高能光。

This then mimics what happens in a hypernova: it becomes an accretion disk, heated to ridiculous temperatures, blasting out those beams of matter and energy.

它变成一个吸积盘，被加热到荒谬的温度，喷出那些物质和能量束。

Often accretion disks are accompanied  by relativistic jets, which emit even higher energy particles and radiation than  from the accretion disk.

吸积盘通常伴随着相对论性喷流，它们发射出比吸积盘更高能量的粒子和辐射。

This material forms a flat disk called an accretion disk, the matter swirling madly at ferocious speeds before falling in like water down a bathtub drain.

这些物质形成了一个被称为吸积盘的扁平圆盘，在像浴缸排水管中的水一样下落之前，这些物质会以惊人的速度疯狂旋转。

Though I guess you could also have spins down to -1 if the black hole is spinning in the opposite direction from the accretion disk.

当黑洞自旋与吸积盘旋转方向相反时，这个数也可以降到-1。

Finally, the incredible gravity around a  black hole leads to interesting gravitational lensing effects on the accretion disk  resulting in this familiar image.

最后，黑洞周围令人难以置信的引力导致了吸积盘上有趣的引力透镜效应，从而产生了这张熟悉的图像。

When the core of a VERY massive star collapses, forming a black hole, the material just outside the core falls down, forming an incredibly hot swirling maelstrom called an accretion disk.

当一个非常大的恒星的核心坍塌，形成黑洞时，核心外的物质会下降，形成一个非常热的漩涡，称为吸积盘。

Black holes don't generate a lot of energy unless they happen to suck down a large amount of material that can be torn apart and turned into an accretion disk.

黑洞不会产生很多能量，除非它们碰巧吸收了大量的物质，这些物质可以被撕成吸积盘。