Black Hole Explosions

[Matthew]

What happens when a black hole explodes? They do, eventually, after they've radiated much of their energy into space, this is Hawking Radiation. Eventually they have so little energy they 'explode', but what happens when they explode?

I suppose a lot of high power gamma rays would be released, but what else? Would anything else happen?

[damienpaul]

hello matthew, i did a bit of a search and found that a likely scenario would be the relatively unknown gamma ray bursts:

www.aeiveos.com/~bradbury/Authors/ Astronomy/Hawking-SW/BHE.html

there has been one detected in our galaxy apparantly:

http://www.jb.man.ac.uk/merlin/press/PR9701/

[Littlemews]

I suppose a lot of high power gamma rays would be released, but what else? Would anything else happen?

My favor ^^ like I said before, there are bad energy exist in the universe, once the Black Hole suckinf this energy, it will explode or cause it to stop sucking.

What happen :
Yup right, release high gamma rays in the universe, and it becomes ultra Hot, everything inside, such as energy(in particles including Electron and Protons) were boiled off, then it explodes.

50,000,000,000,000,000 Megawatts

[I, Brian]

Is there really a theory that claims that black holes explode? If so, I wouldn't mind being acquainted with it. I'm under the impression that, even with Hawking Radiation, black holes themselves are extra-ordinarily long-lived. And gamma-ray bursts have a number of theories behind them, yes?

[GOURDHEAD]

Speculations about black holes exploding should include the deliberate attempts by sentients, capable of using technology advanced from that currently practiced by humans, to explode or otherwise unravel them.

Although the details are somewhat murky, it seems logical to assume that angular momentum is conserved as massive objects begin collapsing and that after the event horizon has formed something very similar to angular momentum applies inside the event horizon. Further, this conservation requires that the tangential component of velocity (or some hard to imagine equivalent) just inside the event horizon and the attendant relativistic mass increase will tend to oppose the gravitational attraction of the extremely exaggerated space-time curvature. Also, the intensive electric and magnetic fields generated in the rapidly rotating disk of plasma just outside the event horizon will oppose the gravity causing and maintaining the collapse. By manipulating the magnetic and electric fields of black holes orbiting each other (where the gravity of each opposes the collapsing/ maintaining force of the other) outside the event horizons of each, we can be the catalyst that initiates the unravelling which well may manifest itself as an explosion of each black hole. Here "the remote" gains new meaning and emphasis.

Humans must strive to achieve such a level of technological competence!!!

[TheThorn]

Originally posted by I, Brian@Jan 18 2004, 06:11 PM
Is there really a theory that claims that black holes explode? If so, I wouldn't mind being acquainted with it. I'm under the impression that, even with Hawking Radiation, black holes themselves are extra-ordinarily long-lived. And gamma-ray bursts have a number of theories behind them, yes?

Sure there's a theory that says black holes explode. And not just tiny little ones due to Hawking Radiation, even the very biggest one. All on it's own.

Consider the biggest possible black hole. Oh, say, one with the mass of the entire universe squashed into a space smaller than an atom. The vast majority of scientists accept a theory that states that such a black hole can explode.

It's called the Big Bang theory.

[Matthew]

Maybe for a brief instant there would be a naked singularity, the event horizon being non-existant.

[DippyHippy]

Is it possible for a black hole to implode due to it's own overwhelming mass?

[TheThorn]

Originally posted by DippyHippy@Jan 19 2004, 12:45 AM
Is it possible for a black hole to implode due to it's own overwhelming mass?

If I understand correctly, that's what makes it a black hole - it already imploded due to its own overwhelming mass.

[Planetwatcher]

I just finished reading the book Steven Hawkings Universe.
The exploding black hole theroy if I understood it correctly was explained as matter to be sucked into the hole approaches the event horizon, a single proton is expelled from each atom and escapes.
Over time, the ratio of electrons and protons become uneven and the event horizon shrinks until the singularity is exposed.
Because the singularity's mass and weight is greater then what is possible in normal space, it explodes. The product is gamma and Hawkins radiation.

The instant that this happens was compaired to the big bang at 10 to the 28th power of a second after the initial big bang occured.
The rest related to 4 great forces which was origionally 1 before the big bang split the 1 force into 4.

[lazserus]

Black holes don't explode. It's speculated that they evaporate, but never actually explode. The problem with the calculations of an evaporating black hole is that they have to be quantum mechanical calculations in a curved space-time. This is extraordinarily difficult because GR and QM don't agree.

A black hole with no event horizon is called a naked singularity. Naked singularities were speculated before black holes were. Now, when a black hole evaporates, the mass inside the event horizon is conjectured to do the actual evaporating. According to the theories, no black hole has ever evaporated. It takes a time span longer than the universe has existed.

[Tiny]

So thats why they got White Hole at the end and release some energy out ot keep the Black Hole alive right?....

[I, Brian]

Originally posted by lazserus@Jan 20 2004, 05:30 PM
Black holes don't explode. It's speculated that they evaporate, but never actually explode. The problem with the calculations of an evaporating black hole is that they have to be quantum mechanical calculations in a curved space-time. This is extraordinarily difficult because GR and QM don't agree.

A black hole with no event horizon is called a naked singularity. Naked singularities were speculated before black holes were. Now, when a black hole evaporates, the mass inside the event horizon is conjectured to do the actual evaporating. According to the theories, no black hole has ever evaporated. It takes a time span longer than the universe has existed.

That's actually what I was thinking. Although I'm sure I had heard of the theoretical possibility, it was on immense time scales that would leave them far out of the real candidates for gamma burst observations.

[Matthew]

According to the theories, no black hole has ever evaporated. It takes a time span longer than the universe has existed.

Some mini black holes may be exploding now, these mini black holes are predicted to have formed some time shortly after the big bang.

[lazserus]

Tiny black holes are just Hawking speculation. We've got nothing really supporting their existence. We've got as much on tiny black holes as we do worm holes.

[Matthew]

True, and we won't know if mini black holes exsist until we see one. But I think we know more about mini-black holes than we do wormholes.