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LHC: "WIMPs" Not Observed (6/4/12)



 
 
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  #51  
Old June 25th 12, 08:01 PM posted to sci.astro.research
Jos Bergervoet
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Posts: 126
Default LHC: "WIMPs" Not Observed (6/4/12)

On 6/25/2012 9:08 AM, Eric Gisse wrote:
On Jun 24, 12:10 pm, Jos Bergervoet wrote:

...
Zero. The only black holes that have been detected are ones that are
stellar mass or higher.


Same question. How are we sure they are *not* primordial?


Basically the size of the accretion disk is a rough indicator, and a
more quantitative notion is that iron gets ionized as it gets sucked
down and emits some lines in the ~5-6KeV range that allow you to get a
pretty good bead on the strength of the gravitational field there.

There's nothing out there that is known to be consistent with being
less than a solar mass.


This still doesn't answer it.. Why can't those black
holes of more than one solar mass be primordial?

--
Jos
  #52  
Old June 26th 12, 06:48 AM posted to sci.astro.research
Eric Gisse
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Posts: 1,465
Default LHC: "WIMPs" Not Observed (6/4/12)

On Jun 25, 2:01*pm, Jos Bergervoet wrote:
On 6/25/2012 9:08 AM, Eric Gisse wrote:

On Jun 24, 12:10 pm, Jos Bergervoet wrote:

* ...
Zero. The only black holes that have been detected are ones that are
stellar mass or higher.


Same question. How are we sure they are *not* primordial?


Basically the size of the accretion disk is a rough indicator, and a
more quantitative notion is that iron gets ionized as it gets sucked
down and emits some lines in the ~5-6KeV range that allow you to get a
pretty good bead on the strength of the gravitational field there.


There's nothing out there that is known to be consistent with being
less than a solar mass.


This still doesn't answer it.. Why can't those black
holes of more than one solar mass be primordial?

--
Jos


In principle there's nothing but in practice black holes are only
found by their accretion which tends to happen in bound systems of
somesort which preclude being here from day one.

OTOH the line blurs a bit when you think about supermassive black
holes but my notion is "if it doesn't predate decoupling, it isn't
primordial."
  #53  
Old June 28th 12, 04:50 PM posted to sci.astro.research
Robert L. Oldershaw
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Posts: 617
Default LHC: "WIMPs" Not Observed (6/4/12)

On Jun 24, 3:37*am, "Robert L. Oldershaw"
wrote:

Today, 6/28, NuSTAR should see its "first light".

BTW, does anyone know why the Spektra-R research team has yet to
announce any significant results from this new ground/satellite radio
telescope that was supposed to generate exciting results. Their
website does not give much information.

RLO
DSR
  #54  
Old June 29th 12, 07:46 AM posted to sci.astro.research
Eric Gisse
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Posts: 1,465
Default LHC: "WIMPs" Not Observed (6/4/12)

On Jun 28, 10:50*am, "Robert L. Oldershaw"
wrote:
On Jun 24, 3:37*am, "Robert L. Oldershaw"
wrote:

Today, 6/28, NuSTAR should see its "first light".

BTW, does anyone know why the Spektra-R research team has yet to
announce any significant results from this new ground/satellite radio
telescope that was supposed to generate exciting results. *Their
website does not give much information.

RLO
DSR


Did you even look?

http://www.asc.rssi.ru/radioastron/ -- Newsletter. From there you can
see they are doing active science right now.

If you are hoping for publications, don't hold your breath. The
telescope hasn't even been in the sky a full year yet. In case you
have not noticed, there is a substantial turnaround time when it comes
to telescope data analysis. I'm still waiting for an analysis of the
Planck data, for example.

Besides it isn't as if your numerology will be vindicated, as neutron
stars are an order of magnitude larger than what your 'definitive
prediction' claims. This has been explained to you befo

http://groups.google.com/group/sci.a...47e1ae48e860e0

Why do you continue to post to this newsgroup, Robert? Ignoring me
doesn't mean that my posts are invisible, it just means you don't
respond to them which looks pretty bad.
 




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