Dear Steve Willner

On Friday, November 16, 2012 2:39:37 PM UTC-7, Steve Willner wrote:
....
The actual preprint is at
http://arxiv.org/abs/1211.2616

What is says is that Baryon Acoustic Oscillations
at z=2.3 are consistent with concordance cosmology.
In particular, something like a cosmological
constant (now referred to as "dark energy," of
which a cosmological constant is a specific form)
is required.

Having Dark Energy as "stuff" (as opposed to the cosmological constant) allows for it to be non-uniformly distributed in space and time, subject to observational support of course. Mr. (Dr.?) Willner, is there some other "benefit" to it being separated from the cosmological constant?

David A. Smith