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Gravitational waves - finally, The topic cover Big bang, inflation and the CMB |
Mar 18 2014, 12:00 PM
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![]() Member ![]() ![]() ![]() Group: Members Posts: 495 Joined: 12-February 12 Member No.: 6336 |
Ripples in the CMB finally show the effect of the cosmic inflation, a holy grail of cosmology and one achievement for the scientists involved.
In a double score it also give further support for the idea of inflation and gravity waves in the first moment after the big bang. New Daily story |
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Mar 22 2014, 01:27 PM
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 3419 Joined: 9-February 04 From: Minneapolis, MN, USA Member No.: 15 |
How to say this correctly, here...
One of the things that really fascinates me about cosmology is how we have a somewhat self-consistent mathematical model for the Big Bang which postulates "the fabric of spacetime" inflating at speeds far faster than C, and how it can be flat or curved, locally bent, even completely ingested into gravitational point sources. And yet we have no description or model, really, of exactly what the "fabric of spacetime" actually is, the mechanisms by which it can inflate, be distorted by mass, etc. We have macro- and micro-models of "reality" that don't mesh, either conceptually or mathematically, and the abyss that lies between must be where these mechanisms are hiding from our view. Physics, as far as it has progressed in the past century or so, is now to the point where it can ask basic, cogent questions. But it's not yet to the point where they can be answered. An exciting time to be alive, eh? -the other Doug -------------------- “The trouble ain't that there is too many fools, but that the lightning ain't distributed right.” -Mark Twain
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Mar 22 2014, 03:38 PM
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#3
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Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
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TheAnt Gravitational waves - finally Mar 18 2014, 12:00 PM
Vultur Cool!
(Now they just need to actually get one... Mar 20 2014, 01:50 AM
TheAnt QUOTE (Vultur @ Mar 20 2014, 02:50 AM) So... Mar 20 2014, 02:53 PM
centsworth_II My recollection from having read Alan Guth's... Mar 20 2014, 06:31 AM
Gerald Inflation is mainly needed to explain the flatness... Mar 20 2014, 11:12 AM
AndyG QUOTE (Gerald @ Mar 20 2014, 11:12 AM) Mu... Mar 25 2014, 10:26 AM
Vultur OK, thank you!
So there is still thought to h... Mar 21 2014, 05:57 AM
Gerald In the strict sense, yes.
The sequence of the fir... Mar 21 2014, 12:35 PM
Vultur Ah - thank you again! Mar 21 2014, 11:51 PM
TheAnt @Vultur Yes and no, the original Big bang theory d... Mar 22 2014, 12:11 PM
TheAnt QUOTE (dvandorn @ Mar 22 2014, 02:27 PM) ... Mar 22 2014, 04:10 PM
MarsInMyLifetime It is an interesting conundrum, Doug. I am no cosm... Mar 22 2014, 03:40 PM
Doug M. So, looking at the image: http://regmedia.co.uk/2... Mar 25 2014, 09:02 AM
centsworth_II If we're going to talk multiverse and many wor... Mar 25 2014, 12:14 PM
centsworth_II My job here is done. Mar 25 2014, 05:32 PM
Holder of the Two Leashes Some doubts about all this ...
Physical Review Le... Jun 23 2014, 03:28 PM
Gerald Let's wait for the corresponding Planck papers... Jun 23 2014, 04:11 PM
Gerald A Joint Analysis of BICEP2/Keck Array and Planck D... Feb 7 2015, 01:14 PM
TheAnt QUOTE (Gerald @ Feb 7 2015, 02:14 PM) A J... Feb 7 2015, 05:44 PM
fredk QUOTE (TheAnt @ Feb 7 2015, 05:44 PM) Yes... Feb 7 2015, 08:00 PM
TheAnt Thank you for your nice reply fredk. =)
A careful... Feb 8 2015, 11:53 AM
fredk QUOTE (TheAnt @ Feb 8 2015, 11:53 AM) The... Feb 8 2015, 04:15 PM
Astro0 ADMIN: This topic has run afoul of forum rule 2.6 ... Feb 8 2015, 07:03 PM![]() ![]() |
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