Behind the Paper

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Mysterious Gamma-Ray Excess Traces Stars

Using a newly developed tool, SkyFACT, which is a hybrid approach between template fitting and image reconstruction, we study the gamma-ray emission from the Galactic Center. We find that the morphology of the so-called “Fermi-LAT Galactic Center Excess” is better described by the distribution of stars in the boxy bulge rather than the expected dark matter density squared. This supports the interpretation that this emission is due to millisecond pulsars instead of dark matter.
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Aug 02, 2018