Localized big bangs???

[RichF]

Just something that I have been pondering for a while. Is it plausible that the big bang could be a localized phenomenon?

 

Assumptions.

 

1)The universe is larger than we can imagine.

2)Gravity caused by the convergence of countless galaxies can create a very large unstable mass. (I don't know how this works so I'll ask below)

3)Big Crunches happen on a localized basis.

4)The unstable mass reaches it's critical stage and explodes. Existing galaxies in the region are pushed away if not destroyed. However, the event is localized.

 

Does this sound plausible?

Can Big Bangs be local phenomenon? It would explain the existence of galaxies/stars older than current science can explain.

Is there a theory on what would cause such a giant mass to go critical as theorized in the big bang?

 

 

Just asking because we seem to limit our thoughts to our local area in time and space.

 

Thanks,

 

Rich

[Martin]

3)Big Crunches happen on a localized basis.

4)The unstable mass reaches it's critical stage and explodes. Existing galaxies in the region are pushed away if not destroyed. However' date=' the event is localized.

 

[/quote']

 

3)Big Crunches happen on a localized basis. SURE THEY DO! they are called black holes------exactly the same mathematics

 

there are black holes which have been observed to have masses on the order of a billion solar masses.

 

At the center of our own galaxy a black hole has been observed which has on the order of 3 or 4 million solar masses.

 

so they come all sizes

 

if something has gobbled up 3 million stars the size of the sun, then I guess you call it a LITTLE big crunch. if something has gobbled up a billion stars or 10 billion stars the size of the sun, then maybe it is a MIDDLESIZE big crunch.

 

that would be what you call a "LOCALIZED" big crunch. there are those ALL OVER THE PLACE. telescopes spot them all the time.

========================

 

I think the most likely thing is that a new spacetime expands out from the bottom of one of these supermassive black holes and we never see it. IT IS A DIFFERENT TRACT OF SPACETIME made, like ours, from a bounce.

 

It is looking increasingly like our big bang was actually a bounce, preceded by a collapse or "crunch"

 

quite a lot of papers recently about this.

 

just today one by Martin Bojowald came out.. very active research area

they have analytic solutions and also they do computer simulations----numerical models.

 

Other cases, like a solarmass BH, when it collapses, might cause a Gammaray Burst. We see these big flashes that seem to involve about the amount of energy that is in the mass of one star.

 

Studying Gammaray Bursts is another hot research area.

 

maybe you should learn to use the arxiv search engine at

http://arxiv.org/find

 

try putting in Bojowald, into the "author" box

nothing else

and just press "do search"

[SkepticLance]

As I understand it, there is nothing to prevent a 'little big bang' occurring any time / any place. Problem is that the result is a new universe, of whatever size. We cannot detect said new universe. Thus it is as if it did not happen.

[RichF]

Interesting, I never really thought of it that way. Martin, thank you for the link...I will do some searching in my spare time. So, can any black hole create a little big bang in a separate space time or does it need to be a certain size to reach critical mass?

[Martin]

Interesting,... So, can any black hole create a little big bang in a separate space time or does it need to be a certain size to reach critical mass?

 

it is not yet clear that a BH can create a little big bang resulting in a separate tract of spacetime

 

but some work points in that direction, and your question about a critical size is interesing.

it is one of the things considered in a recent paper by Bojowald.

 

I think Bojowald results suggest that there is a critical mass or size needed

but this kind of question is at the edge of current research

(some of the relevant papers have just been written and are not published yet)

 

maybe i can get some links later today

[RichF]

Thanks Martin, that's some pretty cool stuff to think about! I'll try to do some searches on the topic this weekend. If the theory is valid I find it VERY cool how mother nature is the ultimate recycler!