Huge new survey to shine light on dark matter

Huge new survey to shine light on dark matter
The first results have been released from a major new dark matter survey of the southern skies using ESO's VLT Survey Telescope (VST) at the Paranal Observatory in Chile.The project, known as the Kilo-Degree Survey (KiDS), uses imaging from the VST and its huge camera, OmegaCAM to analyze images of over two million galaxies. The KiDS team studied the distortion of light emitted from these galaxies, which bends as it passes massive clumps of dark matter during its journey to Earth. From the gravitational lensing effect, these groups turn out to contain around 30 times more dark than visible matter.Left, a group of galaxies mapped by KiDS. Right, the same area of sky, but with the invisible dark matter rendered in pink. Credit: Kilo-Degree Survey Collaboration/A. Tudorica & C. Heymans/ESO

The first results have been released from a major new dark matter survey of the southern skies using ESO's VLT Survey Telescope (VST) at the Paranal Observatory in Chile. The VST KiDS survey will allow astronomers to make precise measurements of dark matter, the structure of galaxy halos, and the evolution of galaxies and clusters. The first KiDS results show how the characteristics of the observed galaxies are determined by the invisible vast clumps of dark matter surrounding them.

Around 85% of the matter in the Universe is dark, and of a type not understood by physicists. Although it doesn't shine or absorb light, can detect this through its effect on stars and , specifically from its gravitational pull. A major project using ESO's powerful telescopes is now showing more clearly than ever before the relationships between this mysterious dark matter and the shining galaxies that we can observe directly.

The project, known as the Kilo-Degree Survey (KiDS), uses imaging from the VLT Survey Telescope and its huge camera, OmegaCAM. Sited at ESO's Paranal Observatory in Chile, this telescope is dedicated to surveying the night sky in visible light—and it is complemented by the infrared survey telescope VISTA . One of the major goals of the VST is to map out dark matter and to use these maps to understand the mysterious dark energy that is causing our Universe's expansion to accelerate.

The best way to work out where the dark matter lies is through gravitational lensing—the distortion of the Universe's fabric by gravity, which deflects the light coming from distant galaxies far beyond the dark matter. By studying this effect it is possible to map out the places where gravity is strongest, and hence where the matter, including dark matter, resides.

As part of the first cache of papers, the international KiDS team of researchers, led by Koen Kuijken at the Leiden Observatory in the Netherlands, has used this approach to analyse images of over two million galaxies, typically 5.5 billion light-years away. They studied the distortion of light emitted from these galaxies, which bends as it passes massive clumps of dark matter during its journey to Earth.

The first results come from only 7% of the final survey area and concentrate on mapping the distribution of dark matter in groups of galaxies. Most galaxies live in groups—including our own Milky Way, which is part of the Local Group—and understanding howmuch dark matter they contain is a key test of the whole theory of how galaxies form in the cosmic web. From the gravitational lensing effect, these groups turn out to contain around 30 times more dark than visible matter.

"Interestingly, the brightest galaxy nearly always sits in the middle of the dark matter clump," says Massimo Viola (Leiden Observatory, the Netherlands) lead author of one of the first KiDS papers.

"This prediction of galaxy formation theory, in which galaxies continue to be sucked into groups and pile up in the centre, has never been demonstrated so clearly before by observations," adds Koen Kuijken.

The findings are just the start of a major programme to exploit the immense datasets coming from the survey telescopes and the data are now being made available to scientists worldwide through the ESO archive.

The KiDS survey will help to further expand our understanding of dark matter. Being able to explain dark matter and its effects would represent a major breakthrough in physics.


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Dark Energy Survey creates detailed guide to spotting dark matter 

More information: Links to research papers: kids.strw.leidenuniv.nl/papers.php
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Jul 09, 2015
The notions of dark matter and the dark matter particle are incorrect. The mass which fills 'empty' space is beginning to be referred to as the 'dark mass' in order to distinguish it from the baggage associated with dark matter.

'Dark Energy/Dark Mass: The Slient Truth'
https://tienzengo...t-truth/

"That is, all that we are certain about [is] the dark mass, not dark matter, let alone to say about the dark 'particle'."

Particles of matter move through and displace the dark mass, including 'particles' as large as galaxies and galaxy clusters.

The Milky Way moves through and displaces the dark mass.

The Milky Way's halo is the state of displacement of the dark mass.

The Milky Way moves through and curves spacetime.

The Milky Way's halo is curved spacetime.

The state of displacement of the dark mass *is* curved spacetime.

Jul 15, 2015
Authors offer no explanation as to how that much of the alleged "Dark Matter" particle could avoid being captured by all the galaxies' super-massive black holes and ordinary black holes for all these billions of years...where it would be indistinguishable from "ordinary matter" trapped in black holes.

30 to 1 ratio eh?

My, my we are inventing even more absurd "facts" to hold this garbage theory together.

Here's a hint:
Fix relativity theory directly, instead of inventing fairy-tale invisible particles to explain everything.

Oh yeah, since you are looking at something 5 billion light years away, what exactly are you using as a "reference" to say that the light has been "bent" at all? You have no reference point to establish what a "straight" line ought to be...

This is foolishness and it's also non-falsifiable, but it's convenient for people to get PAID to study this nonsense.

There is no Dark Matter in the Milky Way Galaxy. Why? Why?

Jul 15, 2015
"This prediction of galaxy formation theory, in which galaxies continue to be sucked into groups and pile up in the centre, has never been demonstrated so clearly before by observations," adds Koen Kuijken.


The Dark Matter phenomenon cannot explain the Dark Flow phenomenon.

However, a "wrinkled Brane surface", or some other similar mathematical construction, could explain both the Dark Matter phenomenon AND the Dark Flow phenomenon as different manifestations of the same thing...without introducing conveniently invisible particles.

Two Branes is simpler than "conveniently where it needs to be" Dark Matter hypothesis.

One God is simpler still.

Occam's Razor favors a wrinkled Brane concept over Dark Matter, and it favors God over Branes.

Think about it.

No, being a creationist doesn't mean I reject the use of science or mathematical models, its just that I recognize that they are just that: Models. Model =/= Reality.


Jul 15, 2015
Fascinating isn't? That this Cosmic Fairy Dust is only detectable at "cosmological distances" of billions of light years yet the article makes a claim that 85% of the Universe is composed of this stuff.

Then of course there is the "clumpy" aspect they discuss in the article. Selectively clumpy, so much so that it cannot enter our solar system. The hyper-special gravity this stuff features carries such innate flavors of gravitons that it can figure out how to enshroud whole giant Elliptical galaxies & never get sucked in.

Yeah, real special stuff whose special gravity prevents it from showing up in our solar system where it would be easy to measure all those daunted gravity characteristics. But wait, if it makes up 85% of the Universe, isn't our solar system also located in the same Universe? That must only mean 85% of our nearest star is missing, but darn, all it's visible mass accounts for all it's gravity. Well, on to the next fairy tale I guess.

Jul 15, 2015
The article goes on to say: "The best way to work out where the dark matter lies is through gravitational lensing—the distortion of the Universe's fabric by gravity, which deflects the light coming from distant galaxies far beyond the dark matter"

Now let's just back up here about a hundred years. When Einstein published General Relativity in 1916, he produced the calculations for exact angle of gravitational lensing when starlight passes by our Sun. He didn't need to come up with missing matter to supply gravity in addition to the Sun's gravity. This being the case, why is there this constant referencing to DM causing gravitational lensing? It is done because they are either abysmally ignorant of GR or they are trying to put over a false concept that gravitational lensing cannot occur except in the presence of so-called Dark Matter.

Now with the narrative put forward that DM can be mapped simply by looking for "lensing", voila, DM everywhere they point a telescope.


Jul 15, 2015
Eeach time a photon passes by anything anywhere in the Universe, it is lensed (bent). The amount of bending (lensing) is directly related to the mass of the body as the photon passes by the mass.

Even our moon lenses photons coming from stars behind it because the gravitational attraction of the moon to the photon is greater than the gravitational attraction of the photon to the moon.

The most extreme exhibition of gravitational lensing occurs in the vicinity of giant Elliptical galaxies the biggest structures in the Universe. This lensing can be so strong that Einstein Rings of great beauty can be created & are a wonder to behold., all accomplished without missing DM.

Spiral galaxies never lens in the extraordinary & spectacular fashion many Ellipticals do. This demonstrates by observation that the total mass of the largest Spirals is much less than the mass of Ellipticals. Giant Ellipticals are up to 100 times larger in mass than the largest Spirals & are more numerous.

Jul 15, 2015
Huge new survey to shine light on dark matter


Let's edit for accuracy, shan't we;

'Huge new boondoggle to siphon billions from the plebes in an attempt to shine light on magical fairy dust from a failed hypothesis'

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