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Indirect Search for Dark Matter from the center of the Milky Way with the Fermi-Large Area Telescope
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The Galactic Center region is expected to host the largest density of Dark Matter (DM) particles within the Milky Way. Then a relatively large gamma-ray signal would be expected from the possible DM particles annihilation (or decay). We are searching for the DM gamma-ray signal from the Galactic Center, which is also rich in bright discrete gamma-ray sources. Furthermore intense diffuse gamma-ray emission due to cosmic-ray interactions with interstellar gas and radiation is detected from the same direction. A preliminary analysis of the data, taken during the first 11 months of the Fermi satellite operations, is reported. The diffuse gamma-ray backgrounds and discrete sources, as we know them today, can account for the large majority of the detected gamma-ray emission from the Galactic Center. Nevertheless a residual emission is left, not accounted for by the above models. An improved model of the Galactic diffuse emission and a careful evaluation of new (possibly unresolved) sources (or source populations) will improve the sensitivity for a DM search.
Forward citations
Cited by 4 Pith papers
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Galactic Center gamma-ray excess from a generic triaxial halo
Fermi-LAT fits show the Galactic Center gamma-ray excess keeps its spectrum and cuspiness under triaxial/tilted dark matter halo templates, but its morphology prefers a flipped-tilt halo and disfavors a stellar-halo profile.
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Stellar-like Galactic center excess challenges particle dark matter
A mixed stellar-bulge and dark-matter fit to Fermi-LAT Galactic Center data yields upper limits on the annihilation cross section that reach the thermal relic line for masses ≲300 GeV under a contracted NFW halo profile.
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Cross-sections and experimental signatures for detection of a well-defined dark matter WIMP
Predicts that a 70 GeV bosonic dark matter WIMP, if it exists, can be discovered at the HL-LHC with >5σ significance after optimized cuts.
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Fermi-LAT Galactic Center Excess morphology of dark matter in simulations of the Milky Way galaxy
The manuscript body is a different paper (b → c semileptonic sum rules) and contains none of the claimed dark matter gamma-ray morphology analysis, so the abstract's prediction is unsupported.
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