Re: [Phys-l] Baryon Acoustic Oscillations

[Bernard Cleyet <bernardcleyet@redshift.com>]

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