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- W2551169356 abstract "An anomalous gamma-ray excess emission has been found in Fermi Large Area Telescope data covering the centre of the Galaxy. Several theories have been proposed for this `Galactic Centre Excess'. They include self-annihilation of dark matter particles, an unresolved population of millisecond pulsars, an unresolved population of young pulsars, or a series of burst events. Here we report on a new analysis that exploits hydrodynamical modelling to register the position of interstellar gas associated with diffuse Galactic gamma-ray emission. We find evidence that the Galactic Centre Excess gamma rays are statistically better described by the stellar over-density in the Galactic bulge and the nuclear stellar bulge, rather than a spherical excess. Given its non-spherical nature, we argue that the Galactic Centre Excess is not a dark matter phenomenon but rather associated with the stellar population of the Galactic bulge and nuclear bulge." @default.
- W2551169356 created "2016-11-30" @default.
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- W2551169356 date "2016-11-21" @default.
- W2551169356 modified "2023-09-27" @default.
- W2551169356 title "Discovery of Gamma-Ray Emission from the X-shaped Bulge of the Milky Way" @default.
- W2551169356 hasPublicationYear "2016" @default.
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