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Missing dark matter located: Intergalactic space is filled with dark matter

Analog

Analog

Lifer
missingdarkm.jpg


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The surface mass density as a function of distance (in units of a hundred thousand light-years). The blue points are observational data, whereas the solid line is the result of a computer simulation. The contributions from the central galaxy (red line) and from nearby galaxies (dashed line) are also shown.

The new research concludes that galaxies have no definite “edges.” Instead galaxies have long outskirts of dark matter that extend to nearby galaxies and the intergalactic space is not empty but filled with dark matter.

It is well known that there is a large amount of unseen matter called “dark matter” in the universe. It constitutes about 22 percent of the present-day universe while ordinary matter constitutes only 4.5 percent. An important question still remains: Where is most of the dark matter in the universe?

Einstein’s general theory of relativity predicts that a light ray passing through near a massive object such as a galaxy is bent by the effect called “gravitational lensing”. For example, the effect causes the image of a distant galaxy to be deformed and brightened by an intervening galaxy. However the effect itself is very small and so cannot be easily detected for a single galaxy. Only recently, images of millions of galaxies from Sloan Digital Sky Survey (SDSS) made it possible to derive an averaged mass distribution around the galaxies. Earlier in 2010, an international research group led by Brice Menard then at University Toronto and Masataka Fukugita at IPMU used twenty four million galaxy images from the Sloan Digital Sky Survey (SDSS) and successfully detected gravitational lensing effect caused by dark matter around the galaxies. From the result, they determined the projected matter density distribution over a distance of a hundred million light-years from the center of the galaxies.

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http://www.physorg.com/news/2012-02-dark-intergalactic-space.html
 
Thought I remember seeing this somewhat recently.

It's basically the glue the made the current picture of the universe even possible. The galaxies are where they are because of the filamentary nature of the dark matter concentrations spread out the way they are (theorized as pretty much the original pattern dark matter took when the universe was young), and thus it was simply matter drifting, thanks to gravity, toward the most dense dark matter concentrations.
 
Our vantage point is nowhere near sufficient to positively determine the bending effect on something so vast and distant. No one knows how light should bend from one galaxy to the next, let alone while we're observing it smack dab in the middle of our own galaxy / solar system.

It smells of something built on false pretenses.
 
Well, basically, there was this little dot, right? And the dot went bang and the bang expanded. Energy formed into matter, matter cooled, matter lived, the amoeba to fish, to fish to fowl, to fowl to frog, to frog to mammal, the mammal to monkey, to monkey to man, amo amas amat, quid pro quo, memento mori, ad infinitum, sprinkle on a little bit of grated cheese and leave under the grill till Doomsday.
 
People keep saying stuff about dark matter and how there's this shit ton of it out there, but they never describe it in any more detail. If you had some dark matter in front of you, would it be heavy? What would it look like? A blot of blackness? Slightly shiny? Would it bounce if you dropped it? Would it taste salty or sweet? Is it poisonous? Is there only one kind? Is it conductive?

If there's so much of this stuff, why can't we snag some and answer these important questions?
 
SlitheryDee said:
People keep saying stuff about dark matter and how there's this shit ton of it out there, but they never describe it in any more detail. If you had some dark matter in front of you, would it be heavy? What would it look like? A blot of blackness? Slightly shiny? Would it bounce if you dropped it? Would it taste salty or sweet? Is it poisonous? Is there only one kind? Is it conductive?

If there's so much of this stuff, why can't we snag some and answer these important questions?
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I think it probably would be transparent. More transparent than the cleanest, thinnest glass sheet you can imagine. You might not even be able to hold it in your hand, it could pass right through, but it would still be 'heavy.'

basic idea, it doesn't interact with light or ordinary matter much, but it does have significant gravity. So it can affect light by bending it (the lensing mentioned above) though gravity-space-time stuff.

Where's silverpig? 😛
 
SlitheryDee said:
If there's so much of this stuff, why can't we snag some and answer these important questions?
Click to expand...

Uh, I'm sure we'll snag some as soon as we successfully get to deep space and back. 😵

I bet "dark matter" isn't even matter at all. Its probably inverted matter. One of its dimensions is along an axis we can't perceive. So we have this 2 dimensional mass in our part of the universe while another dimension is taking up space elsewhere. Imagine totally different physics taking place in this perpendicular dimension, and entire living ecosystems thriving in it. 😱
 
SagaLore said:
Uh, I'm sure we'll snag some as soon as we successfully get to deep space and back. 😵

I bet "dark matter" isn't even matter at all. Its probably inverted matter. One of its dimensions is along an axis we can't perceive. So we have this 2 dimensional mass in our part of the universe while another dimension is taking up space elsewhere. Imagine totally different physics taking place in this perpendicular dimension, and entire living ecosystems thriving in it. 😱
Click to expand...

Half Life?
 
What we call light bulbs are truly dark suckers as well. That is why light bulbs are hot, just like the Sun. When a light bulb is full of dark and won't suck dark any more, it cools off. If you look in old light bulbs you can even seen the accumulation of dark.
Dark is also heavier than water. This can be seen in the oceans where the deeper you go the darker it gets.
 
Jaskalas said:
Our vantage point is nowhere near sufficient to positively determine the bending effect on something so vast and distant. No one knows how light should bend from one galaxy to the next, let alone while we're observing it smack dab in the middle of our own galaxy / solar system.

It smells of something built on false pretenses.
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Why don't you write to them explaining why their research is wrong? Be sure to Cc us on the resulting communications.
 
Ichinisan said:
Is that why intergalactic space is dark? :awe:
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I thought this was common knowledge...all you have to do is look up at the night sky...you can see LOTS of dark with a scattering of pinpoints of light. (where you live will affect how many pinpoints of light you can see)



TecHNooB said:
and next to the dark matter, they found a giant pile of socks.
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Oddly enough, they're all mis-matched. Not a single matching pair in the lot.
 
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