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Thursday, March 13, 2014

X-ray observations revealed the new light on Dark Matter

Dark matter continue to be investigated existence and origin. Current, dark matter is considered as a causative factor of death dinosaurs. As reporting from Gizmag, on Tuesday, March 11, 2014, the most recent analysis by x-ray technology to detect possible signs of the existence of dark matter particles. This monitoring gammar catch-ray emission from the galactic center of the Milky Way, Andromeda and Perseus.
A whole sky picture of the Milky Way galaxy as seen in gamma-ray light. (Picture from: http://www.gizmag.com/)
Dark matter ever uncovered in 1932 by Jan Oort to explain the anomalous orbital velocity of the galaxy. Orbital speed is too great to be explained by the mass can be seen. Thus, researchers showed additional mass, or dark matter must be present.
The XMM-Newton x-ray space observatory. (Picture from: http://www.gizmag.com/)
Astrophysicists revealed through observations that there are approximately six times more dark matter than ordinary matter or called bosons. Scientific approach suggests that dark matter only interacts with itself and ordinary matter through gravity can.

Then, the dark matter is capable of forming concentrated areas that guided the formation of galaxies, clusters of galaxies, and large-scale filament-like structure found in the universe. However, scientific explanation is still not enough to describe the nature of dark matter.
Gamma-ray emissions from the Milky Way galaxy showing the Fermi Bubbles above and below the galactic center. (Picture from: http://www.gizmag.com/)
Group researchers used data from the European Space Agency's observations XMM-Newton and NASA's Chandra X-ray to detect and confirm a new x-ray emission. The new x-ray emission is associated with a galaxy at energies exceeding 3.5 keV. Group of NASA/Harvard-Smithsonian, led by Esra Bulbul utilize data from the camera's XMM-Newton MOS-CCD and PN-CCD. This camera can distinguish x-ray energy 0.15 to 115 keV. Data from the two cameras shows that emissions can not be explained at approximately 3.55 keV energy.
The Fermi gamma-ray observatory in orbit around the Earth. (Picture from: http://www.gizmag.com/)
Another recent study by the Harvard astrophysicists observed in the central region of the Milky Way galaxy. Researchers are also involving the University of Chicago, MIT, Fermilab and Princeton University is utilizing the data from the observation of Fermi gamma-ray space and found strong evidence that this observation found no sign of dark matter in the form of WIMPs (Weakly Interacting Massive Particle). *** [EKA | FROM VARIOUS SOURCES | GIZMAG]
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