The Big Bang time paradox

[Geronimo]

Originally posted by KrazyHorse
I'm pretty sure there's no way to force mass to be ejected at any other than quantum scale from black holes.

does current understanding of hawking radiation state what kind of particles are emitted and how they are emitted?

Also, for huge black holes is the number of particles being emitted less than are emitted from tiny black holes in absolute as well as in relative terms?

[Ned]

Geronimo, radiation, including dark energy, forces the expansion of the universe. But this radiation has, accoding to this thread, little effect on dark matter and presumably, singularities. These might just collapse, over time, to the center of the universe regardless of dark energy. Thus as more and more matter and energy are collected into black holes, the more of it will be available, over time, to be present in supermassive singularities near the center of the universe.

Now, as to how this matter is released, there has to be a breakdown of an event horizon, not so? Perhaps the boundary of an EH becomes so elongated by the nearby presence of another supermassive singularity, that it ruptures in some fashion, i.e., the amount of matter in the singularity is no longer sufficient to maintain the EH.

[KrazyHorse]

presumably, singularities

No.

[Geronimo]

Originally posted by Ned
Geronimo, radiation, including dark energy, forces the expansion of the universe. But this radiation has, accoding to this thread, little effect on dark matter and presumably, singularities. These might just collapse, over time, to the center of the universe regardless of dark energy. Thus as more and more matter and energy are collected into black holes, the more of it will be available, over time, to be present in supermassive singularities near the center of the universe.

Now, as to how this matter is released, there has to be a breakdown of an event horizon, not so? Perhaps the boundary of an EH becomes so elongated by the nearby presence of another supermassive singularity, that it ruptures in some fashion, i.e., the amount of matter in the singularity is no longer sufficient to maintain the EH.

Help me out here. what exactly is "the center of the universe"?

You must not mean center of the visible universe because that would be right here on terra firma

[Ned]

Originally posted by KrazyHorse

presumably, singularities

No.

Really?

Is it either or both radiation and/or dark energy that affect singularities?

[Ned]

Originally posted by Geronimo


Help me out here. what exactly is "the center of the universe"?

You must not mean center of the visible universe because that would be right here on terra firma

Wouldn't that be the site of the Big Bang?

[Ogie Oglethorpe]

Originally posted by Ned


What I envision (pure speculation at this point) is that when two infinities approach each other, they, in fact, cancel thereby releasing the contained matter and energy of one or both singularities.

Its presupposed that such events have occurred. In addition to the effective change in event horizon changes to the angular momentum of the resulting singularity is susepcted.

Australian-American Duo Shows Black Holes In Collision
NEW BRUNSWICK/PISCATAWAY, N.J. One of the more spectacular phenomena in the cosmos might just be the collision of supermassive black holes that accompanies the merger of galaxies. But the astronomical community has not had definitive proof that these black holes are actually coming together. For the first time, astronomers have now produced a convincing mathematical model that offers the strongest support to date for the idea that the black holes merge when their host galaxies do.

David Merritt of Rutgers, The State University of New Jersey, and Ron Ekers of the Australia Telescope National Facility in Sydney, Australia, have published a paper online in Science Express that supports this interpretation.

Their calculations demonstrated that when two black holes merge, the interaction will realign the larger one. They showed for the first time that a smaller hole could knock a bigger one, with five times the mass, out of kilter.

The realignment takes place with a sudden flip in the spin axis of the larger hole. It shows up, said Merritt and Ekers, as a sudden switch in direction of the jets of particles that shoot out along the black hole's spin axis. Images made with a radio telescope show both the old and the new paths, and the galaxy appears X-shaped.

Supermassive black holes have been found in the center of almost every galaxy where astronomers have looked. From a few million to a few billion times the size of our sun (or solar masses), they are thought to have formed from giant gas clouds or from the collapse of clusters of immense numbers of stars shortly after the Big Bang when the universe began.

Merritt, who leads the Supermassive Black Hole Research Group at Rutgers, is a theorist who has worked extensively on the interaction of black holes with galaxies. Ekers, a prominent radio astronomer, is the president-elect of the International Astronomical Union (IAU) and director of the Australia Telescope National Facility.

"Supermassive black holes may have collided in a surprisingly large number of galaxies, leaving their signatures plain to read," reported Merritt and Ekers. About 7 percent of known radio-emitting galaxies show their jets in this characteristic X-shaped pattern. Merritt and Ekers calculated that a large galaxy has the probability of being involved in a collision once every billion years. Based on this calculation, one of these spectacles is bound to take place somewhere in the universe each year.

"We have known about X-shaped galaxies for a long time, but until now we have never had a convincing explanation for them," said Merritt. "Most astronomers were fairly sure that black holes coalesce, but we now regard the X-shaped galaxies as the first 'smoking-gun' evidence. Our model demonstrates that these constitute solid evidence that the black hole mergers actually take place."

Additional images can be downloaded from the Web at http://www.ira.bo.cnr.it/~murgia/Rad...GES/index.html

Science Daily

[Geronimo]

Originally posted by Ned


Really?

Is it either or both radiation and/or dark energy that affect singularities?

Well, AFAICT radiation can effect a black hole in a manner similier to light matter. Certainly a black hole can absorb radiation but apparantly DM is predicted to be unable to absorb radiation.

You could push a singularity around with a(n immense) laser directed at it but apparently DM wouldn't interact at all.

[Geronimo]

Originally posted by Ned


Wouldn't that be the site of the Big Bang?

no.

pre-inflationary theory had the "site" of the big bang as being every point in the universe.

And while current theory muddys the waters considerably it still wouldn't allow for the big bang to proceed from one location (center) of our post inflationary universe.

[Kuciwalker]

KH - something I just realized - black holes can have charge, can't they? Is conservation of charge true on the universal scale?

[Geronimo]

Originally posted by Ogie Oglethorpe


Its presupposed that such events have occurred. In addition to the effective change in event horizon changes to the angular momentum of the resulting singularity is susepcted.




Science Daily

note the lack of any suggestion of the possiblity of matter within either black hole being ejected.

[Ned]

Originally posted by KrazyHorse
I'm pretty sure there's no way to force mass to be ejected at any other than quantum scale from black holes.

But, isn't the size and shape of the EH affected by external gravitaional fields? Second, isn't the size of the EH related to the mass of the singularity?

If the above are correct, why can't the formation a black hole be reversed by expansion of the EH? In the formation process, there is a collapse. In the unformation process, there is an expansion?

[Jon Miller]

They have a nice observation of two galaxies colliding, and the dark matter and the visible matter diverges. It is suppose to be an observation of dark matter.

They can also observe black holes, so if the black holes stick in the proper place relative to the visible matter, it would seem reasonable that black holes and dark matter have a low interaction cross section.

Jon Miller

[KrazyHorse]

Originally posted by Kuciwalker
KH - something I just realized - black holes can have charge, can't they? Is conservation of charge true on the universal scale?

As soon as we understand QFT in curved space I'll tell you.

[Geronimo]

Originally posted by Ned


But, isn't the size and shape of the EH affected by external gravitaional fields? Second, isn't the size of the EH related to the mass of the singularity?

If the above are correct, why can't the formation a black hole be reversed by expansion of the EH? In the formation process, there is a collapse. In the unformation process, there is an expansion?

the event horizon does not collapse as the black hole is formed. In fact it expands outwards when ever matter crosses from outside in.