The locations of bright galaxies are shown by the white regions and the presence of
a dark matter filament bridging the galaxies is shown in red.
Now, researchers have produced what they say is the first composite image of
a dark matter filament that connects galaxies together.
Researchers have produced what they say is the first composite image of
a dark matter filament that connects galaxies across the cosmos.
Smaller, dwarf galaxies travel toward the intersections along long
dark matter filaments, like cars on roads leading into a city.
The team found that their young monstrous galaxies seemed to bewere located right at the intersection of
the dark matter filaments.
Where
the dark matter filaments intersect, regular matter concentrates into galaxies and galaxy clusters.
In this case, the researchers looked for distortions to light being emitted by background galaxies caused by foreground
dark matter filaments.
Dark matter filaments bridge the space between galaxies in this false colour map.
«By using this technique, we're not only able to see that
these dark matter filaments in the universe exist, we're able to see the extent to which these filaments connect galaxies together.»
The first map of dark matter in a major part of the universe shows that clusters of galaxies form at the increasingly clumpy intersections of
dark matter filaments over time (more).
Not exact matches
VIRTUAL UNIVERSE In a snapshot from the Illustris computer simulation of the universe, galaxies (pink) cluster along
filaments of
dark matter (blue).
In their simulations, Gao and Theuns found that within clumps of cold
dark matter, single massive stars formed, but warm
dark matter formed
filaments about a quarter the width of the Milky Way, attracting enough ordinary
matter to create some 10 million stars — and some of these very first stars could still be around.
Astronomers think these motions are guided by
filaments of
dark matter, exotic particles whose presence is known only by their gravitational pull.
It is composed of spindly
filaments of primordial material (mostly hydrogen and helium gas) and
dark matter which connect galaxies and span the chasms between them.
According to theory, the bulk of the
matter in the universe consists of large,
dark filaments of gas in the vast empty space between galaxy clusters.
The results, presented here at the 219th meeting of the American Astronomical Society, look very much like supercomputer simulations of the evolution of the universe, with
dark matter clumped into a «cosmic web» of
filaments and knots.
In October a team led by Mathilde Jauzac at the Laboratoire d'Astrophysique de Marseille in France created a 3 - D representation of an enormous
filament of
dark matter, the invisible substance that fills our universe and binds galaxies together.
The first stars formed along vast
filaments of
dark matter that appeared relatively soon after the big bang, according to a new model of the universe.
It holds that in the earliest days after the big bang, exotic
dark matter, with just a sprinkling of normal
matter, clumped into blobs along narrow
filaments.
During its journey to Earth, the light from these faint galaxies must pass through the lumps and
filaments of
dark matter in the cosmic web.
If so, instead of clumping, the researchers report in tomorrow's issue of Science, this warm
dark matter would have stretched into
filaments thousands of light - years long and weighing as much as millions of suns.
And massive clusters of galaxies ought to be strung along
filaments of
dark matter, like pearls on a chain.
Gravitational lensing shows that two galaxy clusters are connected by a
filament of
dark matter.
The
filament is an important confirmation that
dark matter is real.
[Jörg P. Dietrich et al., «A
filament of
dark matter between two clusters of galaxies»]
Two separate teams found the missing
matter — made of particles called baryons rather than
dark matter — linking galaxies together through
filaments of hot, diffuse gas.
The gas that collapses to form galaxies and stars traces the distribution of
dark matter and extends beyond the galaxies along the
filaments of the cosmic web.
Simulations of how cosmic structures form suggest that most galaxies clump along dense
filaments of
dark matter, which are separated by vast cosmic voids.
The young galaxies seem to reside at the junction of gigantic
filaments in a web of
dark matter.
Huge
dark matter clumps the size of superclusters gather together under the action of gravity into a network of
filaments.
Studying the distorting effects of gravity on light from background galaxies, astronomers uncovered the presence of a
filament of
dark matter extending from the core of the cluster.
«
Filaments are this integral part of the cosmic web, though it's unclear what is the relationship between the underlying dark matter and the filaments,» and that was a primary motivation for the study, said Simone Ferraro, one of the study's authors who is a Miller postdoctoral fellow at UC Berkeley's Center for Cosmological
Filaments are this integral part of the cosmic web, though it's unclear what is the relationship between the underlying
dark matter and the
filaments,» and that was a primary motivation for the study, said Simone Ferraro, one of the study's authors who is a Miller postdoctoral fellow at UC Berkeley's Center for Cosmological
filaments,» and that was a primary motivation for the study, said Simone Ferraro, one of the study's authors who is a Miller postdoctoral fellow at UC Berkeley's Center for Cosmological Physics.
Dark matter constitutes the
filaments — which researchers learned typically stretch and bend across hundreds of millions of light years — and the so - called halos that host clusters of galaxies are fed by the universal network of
filaments.
Dark matter resides in the halos around those galaxies, and was also known to spread from those denser areas in
filaments.
In their paper, Hudson and Epps list dozens of previous studies that have attempted to measure and observe the
dark matter web, and they say they hope their stacking techniques to measure the
filaments between groups and clusters of galaxies can serve as a foundation for future
filament studies.
For gravity to clump galaxies together into walls or
filaments, there must be large amounts of mass left over from the big bang, particularly unseen mass in the form of
dark matter.
These
filaments, spanning across millions of light - years — much larger than the largest galaxies — constitute the cosmic web, and account for most of the ordinary
matter (as opposed to
dark matter) in the universe.
If you look closely at these computer models you see free - flowing gas, smaller galaxies and
dark matter all streaming along these
filaments together.