Rob;
I'm going to think of this one fairly lightly. It reminds me a bit of tea-leaf reading of patterns in the bottom of a teacup. (Or is that crop-circles?). I get the same feeling when I read about the 'holes' in the CMBR, which they say
may represent where matter condensed to form galaxy structures. (And yes … this is an opinion
).
They have speculated about the possibility of multiple Bangs. The real news for me, is that they found a six-sigma level of significance that a concentric circle pattern exists in WMAP (7 year) and BOOMERanG98 data, thus eliminating the possibility of an instrumental cause for the effects.
I guess they wouldn't have found that, if they hadn't speculated in the first place.
So the door is now open for the story-tellers to come up with stories as to how these patterns may have gotten there. (Did I hear some say Erik Von Daniken ?)
Quote:
Originally Posted by Robh
To begin, let me say I'm no expert on Big Bang cosmology.
From what I've read about black holes their temperature increases exponentially as they radiate away mass. The black holes then likely dissolve in situ in a burst of gamma rays. If the Universe is expanding, by what mechanism are these black holes going to collide to form the ripple of another Big Bang?
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Theory allows for this to happen today .. black holes collide to form super massive black holes .. galaxies collide, etc.
The metric expansion of space however, is observed on a different scale. Where galaxies are moving apart with the expansion of space, fair enough .. I get ya .. its not likely that these (& their enclosed SMBHs) would collide.
I don't see this as a problem for their story, however.
Quote:
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Originally Posted by Robh
It seems to me a bit of a jump to say that the circles in the CMBR allow us to see through the Big Bang. Is it likely that an earlier signature will still be observable following another Big Bang? How will the ages of the concentric signatures match the age of distant objects embedded in the CMBR?
Is it possible for the concentric circles to indicate a Big Bang that occurred in stages with multiple inflation events?
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Most of this is explained in the first three pages of the
Penrose et al paper. This is the speculative part of what they're reporting and it seems like a fairly thin analysis to me (another opinion !!
)
Cheers