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تسجيل مستخدم جديدDwarf Galaxy $gamma$-excess and 3.55 keV X-ray Line In A Nonthermal Dark Matter Model
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Recent data from Reticulum II (RetII) require the energy range of the FermiLAT $gamma$-excess to be $sim$ $2-10$ GeV. We adjust our unified nonthermal Dark Matter (DM) model to accommodate this. We have two extra scalars beyond the Standard Model to also explain 3.55 keV X-ray line. Now the mass of the heavier of them has to be increased to lie around 250 GeV, while that of the lighter one remains at 7.1 keV. This requires a new seed mechanism for the $gamma$-excess and new Boltzmann equations for the generation of the DM relic density. All concerned data for RetII and the X-ray line can now be fitted well and consistency with other indirect limits attained.
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A two component model of nonthermal dark matter is formulated to simultaneously explain the Fermi-LAT results indicating a $gamma$-ray excess observed from our Galactic Centre in the 1-3 GeV energy range and the detection of an X-ray line at 3.55 keV
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