Scientists Detect Signal that Possibly a Dark Matter

Astronomy Science ~ Astronomers may have finally managed to detect a signal from dark matter, the mysterious and elusive material that alle...

Astronomy Science ~ Astronomers may have finally managed to detect a signal from dark matter, the mysterious and elusive material that allegedly inhabit most of the universe material. When examining data collected by ESA's XMM-Newton spacecraft, the research team saw a strange spike in X-ray emission originating from two different celestial objects - galaxies Andromeda and Perseus galaxy cluster.

The signals associated with particles or atoms that are not known and thus may be a signal that is produced by dark matter, researchers said.

"The distribution of the signal in the galaxy according to what we expect concerning dark matter, namely, concentrated and intense at the center of galaxies and weak and spread out around the edges," said in a statement of the Ecole Polytechnique Fédérale de Lausanne (EPFL) in Switzerland. "With the aim of verifying our findings, we then look at the data from our galaxy, the Milky Way, and make the same observations," adds Alexey Boyarsky, from EPFL and the University of Leiden in the Netherlands.

The composition of the universe
The composition of the universe


Called dark matter because this material does not absorb or emit light and therefore we can not observe directly. But astronomers know dark matter is there because of its gravitational interaction with "normal" to the material that we can see and touch.

And there seems to be a lot of dark matter out there: Observation of the dynamics of motion of stars and galaxies indicate that about 80 percent of all matter in the universe is "dark matter," which exert gravitational force but does not interact with light.

Researchers have proposed a number of different exotic particles as a component of dark matter, including weakly interacting massive particles (WIMPs), axions and sterile neutrinos, neutrinos cousin hypothetical "regular" (particles that resemble but are not electrically charged electrons).

Decomposition of sterile neutrinos are thought to generate the X-rays, so the researchers suspect that sterile neutrinos, dark matter particles may be responsible for making mysterious signals emerging from the Andromeda and Perseus cluster. The results of this study will be published next week in the journal Physical Review Letters - correctly, they can bring a new era in astronomy, said study team member.

"Confirming this discovery can lead to the manufacture of a new telescope designed specifically to study the signals of dark matter particles," says Boyarsky. "We'll know where to find and track the dark structures in this space and we will be able to reconstruct how the universe formed."

You can read the report of this study here: arXiv: http://arxiv.org/pdf/1402.4119v1.pdf
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Astronomy Science: Scientists Detect Signal that Possibly a Dark Matter
Scientists Detect Signal that Possibly a Dark Matter
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