4 ms·

For me, CMB is just light of distant stars with z=1100. Universe is composed of attractors and voids at any scale. Anyway, I see no shockwave of any kind in CM

by brutt 7y ago

For me, CMB is just light of distant stars with z=1100. Universe is composed of attractors and voids at any scale. Anyway, I see no shockwave of any kind in CMB. Where it is? Such massive explosion, with energy of 1E53 atomic bombs and no shockwave at all just miliseconds (in scale of Universe) after the Bing Bang. How this is possible?

yorwba 7y ago
What do you expect that shockwave to look like? Circles expanding from the center of the explosion?
- brutt 7y ago
  Yep. Something like that: https://www.youtube.com/watch?v=EmdBFoQtVvU https://www.youtube.com/watch?v=EmdBFoQtVvU .
zentiggr 7y ago
Look into the inflationary portion of the BB timeline, and also add in the fact that those shockwaves have had the same 13.8B years to expand and dissipate. The CMB variations _are_ the remnants of that initial period, attenuated after all this time.
XaspR8d 7y ago
What exactly are you looking for when you say shockwave? As far as we understand it, the big bang didn't explode into something, so there isn't an outer medium to "hold" a shockwave in the obvious sense of a radially expanding region of turbulence. Also the frequently depicted diagram of expanding from a point doesn't really intend to depict the shape of it. The universe might still be infinitely large and the big bang occurred "everywhere" within it. Where is the shockwave in something that has no edge?
madaxe_again 7y ago
The shockwaves are everywhere - you, right now, are in a density node. Inflation wasn’t something that happened from a single point - it happened as a result of vacuum collapse, spontaneously, all over the place. Some of these inflationary zones went much faster than others, and where they intersected, regions of increased density, and therefore matter, occurred. The filamentary nature of the very macroscopic universe reflects these shock intersection zones - they’re full of galaxies. We think that the voids are likely centred around points where inflation occurred. So yeah. You’re the shockwave. Sorry man. Here’s a decent vid from PBS Space Time where they explain some of this nice and clearly - I recommend their channel generally if these topics interest you. https://youtu.be/72cM_E6bsOs https://youtu.be/72cM_E6bsOs

by brutt 7y ago

yorwba 7y ago

What do you expect that shockwave to look like? Circles expanding from the center of the explosion?

brutt 7y ago
Yep. Something like that: https://www.youtube.com/watch?v=EmdBFoQtVvU https://www.youtube.com/watch?v=EmdBFoQtVvU .

zentiggr 7y ago

Look into the inflationary portion of the BB timeline, and also add in the fact that those shockwaves have had the same 13.8B years to expand and dissipate. The CMB variations _are_ the remnants of that initial period, attenuated after all this time.

XaspR8d 7y ago

What exactly are you looking for when you say shockwave? As far as we understand it, the big bang didn't explode into something, so there isn't an outer medium to "hold" a shockwave in the obvious sense of a radially expanding region of turbulence. Also the frequently depicted diagram of expanding from a point doesn't really intend to depict the shape of it. The universe might still be infinitely large and the big bang occurred "everywhere" within it. Where is the shockwave in something that has no edge?

madaxe_again 7y ago

The shockwaves are everywhere - you, right now, are in a density node. Inflation wasn’t something that happened from a single point - it happened as a result of vacuum collapse, spontaneously, all over the place. Some of these inflationary zones went much faster than others, and where they intersected, regions of increased density, and therefore matter, occurred. The filamentary nature of the very macroscopic universe reflects these shock intersection zones - they’re full of galaxies. We think that the voids are likely centred around points where inflation occurred. So yeah. You’re the shockwave. Sorry man. Here’s a decent vid from PBS Space Time where they explain some of this nice and clearly - I recommend their channel generally if these topics interest you. https://youtu.be/72cM_E6bsOs https://youtu.be/72cM_E6bsOs