Le 03/05/2018 à 22:37, Steve Willner a écrit :
Did you miss Fig 2 (right panel) in the paper? The mass is
consistent with model expectations.

Well, I detect that I look at what I want to see, I did miss the right
panel figure, because I read what it said about the LEFT panel:

quote
Most of the literature SMG overdensities are consistent with the model
expectations, whereas SPT2349-56 lies vastly above the region spanned by
the model.
end quote

So the models do not fit at all for the left panel.

You point correctly that the right panel shows that the models could
account for the same object!

I did not read that. Observer bias from my side :-)

Anyway, the question remains:

how can you make a cluster of this mass in only 1.2Gy?

And yes, many detected objects are young and bright in the far away
universe, but since those objects are bright there could be an observer
bias in our observations!

Older and far less luminous objects could be abundant but beyond the
powers of ALMA.

You did not quote that part of my message...

What is interesting is that there could be an evolution in the universe,
and maybe the galaxy formation process started somewhere sometime in a
huge undifferentiated gas cloud. Not a "big bang" but a beginning of an
ongoing condensation process in our local cloud.

With an ALMA version 2.0 maybe it will be possible to find out lensed
galaxies in that cluster, and if we find them, we could start answering
those questions. In any case, finding such a lensed galaxy in this
cluster would definitely disprove any big bang.

Thanks for your input.