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arXiv · 1204.0655

Dark matter origin of the gamma ray emission from the galactic center observed by HESS

J. A. R. Cembranos·V. Gammaldi·A. L. Maroto
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Abstract

We show that the gamma ray spectrum observed with the HESS array of Cherenkov telescopes coming from the Galactic Center (GC) region and identified with the source HESS J1745-290, is well fitted by the secondary photons coming from dark matter (DM) annihilation over a diffuse power-law background. The amount of photons and morphology of the signal localized within a region of few parsecs, require compressed DM profiles as those resulting from baryonic contraction, which offer $\sim 10^3$ enhancements in the signal over DM alone simulations. The fitted background from HESS data is consistent with recent Fermi-LAT observations of the same region.

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J. A. R. Cembranos, V. Gammaldi, A. L. Maroto. 2012-05-16. Dark matter origin of the gamma ray emission from the galactic center observed by HESS. https://doi.org/10.1103/physrevd.86.103506

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