Posted on 01/10/2008 12:52:18 PM PST by LibWhacker
Like a democrat budget.
"You are correct; the singularity is smaller than an atom, but what changes in radius based on mass will be the event horizon."
The event horizon is the sphere that surrounds the singularity. At each point on that sphere the curvature of space is zero. Stuff that approaches it, approaches it ever more slowly and eventually hangs there. Even though the radius of the horizon increases, the stuff approaching it still hangs just outside that horizon. The particles are essentially being held by a moving surface.
The particles can never quite make it inside though, else either the hole's horizon, or the particle would measure a speed higher than the speed of light, or infinite mass. The region just outside the horizon has tremendous curvature, where the radial dimension keeps getting shorter and shorter, and clocks on the particles keep ticking slower and slower. Both length and time though, never hit zero, they just keep approaching it indefinitely, and the energy of photons, and the mass of particles keeps increasing, but never hits infinity.
"Get within the event horizon and you will never get back out.
The above holds, but there's another consideration. The vacuum produces particle pairs of matter/antimatter in very short time periods. To keep it simple, an antimatter particle can be captured on the horixon, while the matter particle escapes. That means the hole will radiate. So a hole that's sucked up all the surrounding stuff, will eventually evaporate. It also means the hole has a temperature. Huge holes like this are extremely cold tens of negative magnitudes above absolute zero. As the whole evaporates, it gets hotter and hotter, eventually fizzling out to the smallest event horizon, at which point I expect a particle pair would wipe out that horizon and the hole would decay.
You know, they say the laws of the universe were laid down in the first 10-35 seconds (or something like that) after the Big Bang. Luckily, in our universe the laws prohibit black holes sucking in more mass than exists in their neighborhood.
But there may be universes where black holes can suck in more mass than exists.
'Rats apparently are very unhappy about the laws of our universe and are determined to show us how wonderful it would be to live in such an alternate universe by sucking in more tax dollars than exist. They'll never convince me, though!
thx for the explaination
You’re welcome.
Well, right there you have proven that everything happens at the same time for a reason....& Hellary will just spin in space for a nano-second.
It’s such a shame it has to be the same nano-second as ours;)
My bet is that the black holes may have already collided, but at 3.5 billion light years away, we wouldn’t know about it for a long time to come.
The same reason that the Sun hasn't swallowed the Earth. The mass of the smaller black hole is small in proportion to that of the larger black hole so you can just use Kepler's equations to describe its motion. Due to how black holes work with general relativity, they will radiate away energy in gravitational waves until they collide.
The larger black hole has the mass of a very small galaxy. It is frighteningly large. I wonder if it was previously a galactic center.
The sun is more central to the earths orbital path than the larger black hole is to the smaller.. its more like a mini comet orbit.
I’m not arguing the math, I’m sure their behaving as the laws of physics say they should, just personally find it amazing that given the natures of their orbits, they haven’t manage to collide yet.
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