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Saturday, April 12, 2014

Dark matter map

Is this the first map of dark matter?

April 9, 2014
gamma_ray_excess
At left is a map of gamma rays with energies between 1 and 3.16 GeV detected in the galactic center by Fermi’s Large Area Telescope; red indicates the greatest number. Prominent pulsars are labeled. Removing all known gamma-ray sources (right) reveals excess emission that may arise from dark matter annihilations. (Credit: T. Linden, Univ. of Chicago)
A new study of gamma-ray light from the center of our galaxy makes the strongest case to date that some of this emission may arise from dark matter, an unknown substance making up most of the material universe. Using publicly available data from NASA‘s Fermi Gamma-ray Space Telescope, independent scientists at the Fermi National Accelerator Laboratory (Fermilab), the Harvard-Smithsonian Center for Astrophysics (CfA), the Massachusetts Institute of Technology (MIT) and the University of Chicago have developed new maps showing that the galactic center produces more high-energy gamma rays than can be explained by known sources and that this excess emission is consistent with some forms of dark matter./.../

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