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We explore the non-commutative space-time to revive the idea that gamma-ray excess in the
galactic center can be the result of particle dark matter annihilation. In the non-commutative
theory, the photon spectrum is produced by direct emission during this annihilation where a photon can be embed in the final state together with other direct products in new vertices. In the
various configurations of dark matter phenomenology, we pursue the most common model known
as singlet scalar. Calculating the relevant aspects of the model and determining the parameters
phase space, we obtain the photon flux in the galactic center, a dense region sometimes with the
presence of strong magnetic fields, which is an appropriate place to study theories involving Lorentz
symmetry breaking. Comparing our numerical achievements with experimental data reveals that
non-commutative space-time can be a reliable framework to explain the gamma-ray excess.
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