# Anti-matter Black Hole

1. Apr 23, 2013

### chasrob

Is there any such thing? Or is it unphysical?

If it's physical, would making contact with a matter black hole result in E=mc^2?

Thanks.

Last edited: Apr 23, 2013
2. Apr 23, 2013

### mathman

It's highly unlikely. In case of contact with matter (black hole or not), the reaction would take place inside, so we would never know.

3. Apr 23, 2013

### Naty1

Seems unphysical in this universe. not enough loose antimatter to go around.

But in an anti matter universe, perhaps so.

What is an antimatter black hole?

4. Apr 23, 2013

### Hercuflea

If an antimatter and a matter black hole collided, how much energy would be released?? Would it be enough to eject the gamma rays from the gravitational well?

5. Apr 23, 2013

### Mordred

You would never have an anti matter BH in a matter dominant universe. So the two would never collide.
An anti-matter BH could only form in a theoretical anti-matter universe.

6. Apr 23, 2013

### chasrob

Say a solar mass BH and antiBH were involved... several FOEs of energy released, and we see nothing? Wow, hard to believe.

Last edited: Apr 23, 2013
7. Apr 24, 2013

### Nabeshin

Let's drop the answer that there isn't antimatter in high enough concentrations to produce black holes in our universe. That's irrelevant.

Once you've formed the black hole, it has exactly three properties: Mass, charge, and spin. Whether you make it out of matter, antimatter, or unicorns, these three numbers completely describe it. So you can make a BH of antimatter and one of matter with the same mass, charge and spin and they will be IDENTICAL.

If two collide, they will do what black holes do and merge into one larger black hole. I repeat, once you've formed the black hole it's just a black hole -- no special properties besides mass, charge, and spin remain.

8. Apr 24, 2013

### Chronos

The properties of matter will be crushed out of existence in a black hole, so they will not be distinguishable one from the other. In other words, I agree with Nabeshin.

9. Apr 24, 2013

### ImaLooser

Yep, that's how it works, as far as anyone knows. In the current political climate it's difficult to acquire funds for the experiment.