Researchers Claim Compelling Signals for Dark Matter Particles
Researchers are terming their study findings to be the most compelling signal they have ever got for dark matter particles. The study of gamma-ray light from centre of Milky Way unveiled that some of the emissions may be coming from dark matter, which makes most of the material universe.
Lead author of the study, Dan Hooper from the Fermi National Laboratory in Batavia, Illinois, said the findings will become a base for further investigations. Now, the new maps will allow them to assess the more conventional explanations like presence of undiscovered pulsars or cosmic-ray collisions on gas clouds.
"The signal we find cannot be explained by currently proposed alternatives and is in close agreement with the predictions of very simple dark matter models", affirmed Hooper.
Researchers from different institutes including the Fermi National Accelerator Laboratory (Fermilab), the Massachusetts Institute of Technology (MIT), the Harvard-Smithsonian Center for Astrophysics (CfA) and the University of Chicago have worked on the data of NASA's Fermi Gamma-ray Space Telescope.
Using the same, they have come up with new maps that unveils that the galactic center produces quite a high amount of high-energy gamma rays. The excess emission is said to be consistent with some forms of dark energy. The energies are between 1 and 3 billion electron volts (GeV).
For now, no one is aware of true nature of dark matter, but Weakly Interacting Massive Particles (WIMPs) is considered to be one of the top candidates. Theorists have predicted a wide range of WIMPs type including some may be mutually annihilate or come up with quickly decaying particle as they collide. Both the forms lead to the production of gamma rays considered to be the most energetic form of light.
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