[ExI] Has the mystery of Dark Matter been solved?
johnkclark at gmail.com
Thu May 26 03:53:44 UTC 2016
On Wed, May 25, 2016 at 4:33 AM, Anders <anders at aleph.se> wrote:
> Likely just to annoy John, there is a recent paper (
> http://arxiv.org/abs/1603.08522 ) arguing the early supermassive holes
> could be due to direct collapse of gas clouds. I cannot judge the
> likelihood of this, but it will be interesting to see how it turns out.
Maybe early gas clouds did collapse to form Black Holes, but those types
of Black Holes can't be Dark matter because those gas clouds were made of
and we know from
that there was never nearly enough
to account for Dark Matter. And it's hard for me to believe that
can account for the Black Hole pair that LIGO found either.
Black Hole pair like the one LIGO found has
existed for 13.8 billion years
but it only made enough noise for LIGO to hear it for a fifth of a second,
and yet LIGO managed to hear such a pair after just a few weeks of
listening. And it had not even reached it's full sensitivity yet. Either
the LIGO people were extraordinarily lucky or there are one hell of a lot
of Black Holes out there, perhaps enough to account for Dark Matter. LIGO
goes back online in September
(and will be joined by VIRGO)
so we should
be able to straighten out what's going on
before the end of the year.
John K Clark
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