No Naked Singularity After Black Hole Collision

AstroEngine ^ | 10/7/08 | Ian O'Neill

[Secret Agent Man]

It’s good for all of us that Helen Thomas is not a naked singularity.

[AndyJackson]

Naked pairing is much better.

[Centurion2000]

This theoretical entity is known as a “naked singularity” and physicists are at a loss to explain what one would look like.

Silly physicists ... it would look like this below.

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[Question_Assumptions]

Correct. But as the relative time approaches a standstill, the motion will get increasingly smaller and smaller, we should get something akin to Zeno’s paradoxes where you can never actually reach the point where time has stopped but simply creep toward that point mroe slowly and slowly.

[Question_Assumptions]

Correct, but if the universe has an end, then that end can be achieved before the infinite amount of time to hit the point where time actually stops. And once you reach the point where time stops, nothing can move because velocity is a function of distance and time.

[Question_Assumptions]

Exactly. Unless the universe has infinite time, then the universe will end before the true singularity where time has stopped actually forms.

[Question_Assumptions]

As I understood it, the mathematical point at which light cannot escape corresponds to the mathematical point where time effectively stops for matter. If that’s not the case, then that’s what I’d like to know.

[Azeem]

“As I understood it, the mathematical point at which light cannot escape corresponds to the mathematical point where time effectively stops for matter. If that’s not the case, then that’s what I’d like to know.”

No. We observe gravitational fields in relation to velocity but that’s not what is happening (according to the guys with higher IQs than me). The gravity field is so powerful, it is bending spacetime. Time is still moving at a slower rate to the outside observer (normal to the unlucky person in the event horizon) and the gravitational forces are tearing all mass apart. Read ‘Death by Black Hole’ by Neil deGrasse Tyson about spaghettification :)

At the point of singularity itself, time has reached zero.

http://en.wikipedia.org/wiki/Gravitational_singularity
Read Types - Curvature for the mathematics about it.

[SunkenCiv]

Uh, yah... one great big omni-ping.

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[Question_Assumptions]

Yes, and if time has stopped at the singularity, it’s nearly stopped just outside of the singularity so how does anything actually ever reach the singularity?

[E=MC2]

I wonder if they really said this using these words. This almost implies that gravity is a type of energy wave that can be emitted, comparable to eletromagnetic energy.

Yes. That is the theory.

[brytlea]

Thanks, I read it, and now my head hurts!