Science > Physics > Ghostly ring provides strong evidence for dark matter
| Topic: |
Science > Physics |
| User: |
"Sam Wormley" |
| Date: |
16 May 2007 11:19:28 PM |
| Object: |
Ghostly ring provides strong evidence for dark matter |
Ghostly ring provides strong evidence for dark matter
http://physicsweb.org/articles/news/11/5/15/1
16 May 2007
A ring-shaped distribution of mass in a galaxy cluster five billion
light-years from Earth is the strongest evidence yet for the
existence of dark matter. This is the claim of physicists from the US
and Europe, who have used data from NASA's Hubble Space Telescope to
see how gravity is bending the light around the cluster. Unlike
previous searches in other galaxy clusters, this would be the first
time dark matter has been seen isolated in its own separate structure
(arXiv.org/abs/astro-ph/0705.2171).
Dark matter is thought to constitute up to 95% of all matter in the
universe. Although it has never been observed directly, most
physicists believe it to exist because galaxies appear to rotate
faster than they would if they only contained ordinary "baryonic
matter". The extra pull of the dark matter would explain away the
unusual motion.
Dark Matter Ring Modeled around Galaxy Cluster CL0024+17
http://antwrp.gsfc.nasa.gov/apod/ap070516.html
Explanation: How do we know that dark matter isn't just normal matter
exhibiting strange gravity? A new observation of gravitationally
magnified faint galaxies far in the distance behind a massive cluster
of galaxies is shedding new dark on the subject. The above detailed
image from the Hubble Space Telescope indicates that a huge ring of
dark matter likely exists surrounding the center of CL0024+17 that
has no normal matter counterpart. What is visible in the above image,
first and foremost, are many spectacular galaxies that are part of
CL0024+17 itself, typically appearing tan in color. Next, a close
inspection of the cluster center shows several unusual and repeated
galaxy shapes, typically more blue. These are multiple images of a
few distant galaxies, showing that the cluster is a strong
gravitational lens. It is the relatively weak distortions of the many
distant faint blue galaxies all over the image, however, that
indicates the existence of the dark matter ring. The computationally
modeled dark matter ring spans about five million light years and
been digitally superimposed to the image in diffuse blue. A
hypothesis for the formation of the huge dark matter ring holds that
it is a transient feature formed when galaxy cluster CL0024+17
collided with another cluster of galaxies about one billion years
ago, leaving a ring similar to when a rock is thrown in a pond.
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| User: "Tomoko Kanazawa" |
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| Title: Re: Ghostly ring provides strong evidence for dark matter |
16 May 2007 11:50:54 PM |
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"Sam Wormley" <swormley1@mchsi.com> wrote in message
news:kJQ2i.118610$_c5.101298@attbi_s22...
Ghostly ring provides strong evidence for dark matter
http://physicsweb.org/articles/news/11/5/15/1
16 May 2007
A ring-shaped distribution of mass in a galaxy cluster five billion
light-years from Earth is the strongest evidence yet for the
existence of dark matter.
Nonsense.
The strongest evidence for dark matter is actually dark gravity, which is
easily explained in terms of trivial geometry using probabilistic methods.
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| User: "Sam Wormley" |
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| Title: Re: Ghostly ring provides strong evidence for dark matter |
17 May 2007 12:00:25 AM |
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Tomoko Kanazawa wrote:
"Sam Wormley" <swormley1@mchsi.com> wrote in message
news:kJQ2i.118610$_c5.101298@attbi_s22...
Ghostly ring provides strong evidence for dark matter
http://physicsweb.org/articles/news/11/5/15/1
16 May 2007
A ring-shaped distribution of mass in a galaxy cluster five billion
light-years from Earth is the strongest evidence yet for the
existence of dark matter.
Nonsense.
The strongest evidence for dark matter is actually dark gravity, which is
easily explained in terms of trivial geometry using probabilistic methods.
Who do you work for?
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| User: "MTA" |
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| Title: Re: Ghostly ring provides strong evidence for dark matter |
17 May 2007 01:08:28 AM |
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Ghostly ring provides strong evidence for dark matter
http://physicsweb.org/articles/news/11/5/15/1
16 May 2007
A ring-shaped distribution of mass in a galaxy cluster five billion
light-years from Earth is the strongest evidence yet for the
existence of dark matter.
Nonsense.
The strongest evidence for dark matter is actually dark gravity, which is
easily explained in terms of trivial geometry using probabilistic
methods.
Who do you work for?
Yowza..Yowza
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| User: "malibu" |
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| Title: Re: Ghostly ring provides strong evidence for dark matter |
17 May 2007 09:04:16 AM |
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On May 16, 11:00 pm, Sam Wormley <sworml...@mchsi.com> wrote:
Tomoko Kanazawa wrote:
"Sam Wormley" <sworml...@mchsi.com> wrote in message
news:kJQ2i.118610$_c5.101298@attbi_s22...
Ghostly ring provides strong evidence for dark matter
http://physicsweb.org/articles/news/11/5/15/1
16 May 2007
A ring-shaped distribution of mass in a galaxy cluster five billion
light-years from Earth is the strongest evidence yet for the
existence of dark matter.
Nonsense.
The strongest evidence for dark matter is actually dark gravity, which is
easily explained in terms of trivial geometry using probabilistic methods.
Who do you work for?
A question I have asked *you*
before, SSSSSam.
And you ssssaid, 'the good guysssss',
ssssssssssssssssssssss
Why do I not believe that?
John
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| User: "Tomoko Kanazawa" |
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| Title: Re: Ghostly ring provides strong evidence for dark matter |
17 May 2007 09:05:33 PM |
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"malibu" <vegan16@accesscomm.ca> wrote in message
news:1179410656.125109.197300@u30g2000hsc.googlegroups.com...
On May 16, 11:00 pm, Sam Wormley <sworml...@mchsi.com> wrote:
Tomoko Kanazawa wrote:
"Sam Wormley" <sworml...@mchsi.com> wrote in message
news:kJQ2i.118610$_c5.101298@attbi_s22...
Ghostly ring provides strong evidence for dark matter
http://physicsweb.org/articles/news/11/5/15/1
16 May 2007
A ring-shaped distribution of mass in a galaxy cluster five
billion
light-years from Earth is the strongest evidence yet for the
existence of dark matter.
Nonsense.
The strongest evidence for dark matter is actually dark gravity, which
is
easily explained in terms of trivial geometry using probabilistic
methods.
Who do you work for?
I'm with the allies.
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| User: "malibu" |
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| Title: Re: Ghostly ring provides strong evidence for dark matter |
17 May 2007 08:54:47 AM |
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On May 16, 11:00 pm, Sam Wormley <sworml...@mchsi.com> wrote:
Tomoko Kanazawa wrote:
"Sam Wormley" <sworml...@mchsi.com> wrote in message
news:kJQ2i.118610$_c5.101298@attbi_s22...
Ghostly ring provides strong evidence for dark matter
http://physicsweb.org/articles/news/11/5/15/1
16 May 2007
A ring-shaped distribution of mass in a galaxy cluster five billion
light-years from Earth is the strongest evidence yet for the
existence of dark matter.
Nonsense.
The strongest evidence for dark matter is actually dark gravity, which is
easily explained in terms of trivial geometry using probabilistic methods.
Who do you work for?
haha
Interesting reply, shill.
Who do YOU work for?
The Status Quo?
More and more money for the
same smoke and mirrors?
haha
John
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