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2019

Strong Evidence that the Galactic Bulge is Shining in Gamma Rays

Macias, Oscar, Horiuchi, Shunsaku, Kaplinghat, Manoj et al.

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There is growing evidence that the Galactic Center Excess identified in the $\textit{Fermi}$-LAT gamma-ray data arises from a population of faint astrophysical sources.

We provide compelling supporting evidence by showing that the morphology of the excess traces the stellar over-density of the Galactic bulge.
By adopting a template of the bulge stars obtained from a triaxial 3D fit to the diffuse near-infrared emission, we show that it is detected at high significance.
The significance deteriorates when either the position or the orientation of the template is artificially shifted, supporting the correlation of the gamma-ray data with the Galactic bulge.

Strong Evidence that the Galactic Bulge is Shining in Gamma Rays · Around

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