Re: [Phys-l] Baryon Acoustic Oscillations
On 2012, Mar 31, , at 00:00, Mark Sylvester wrote:
> Looking at http://arxiv.org/abs/1203.6594v1
>
> Have I got this right: there are discernible patterns in the
> distribution of galaxies that derive from sound waves in the early
> universe, when matter was still dense enough for this. The distance to
> these features is accurately known (how is this calibration achieved?)
> and thus provides a datum for getting distances to galaxies that lie on
> the features.
>
> Mark.
am I understanding this? The early acoustic wave is maintained by mutual
gravitational attraction and mass - analogy: intermolecular forces and
molecular masses? (solids), etc.
bc thinks rather interesting
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