TY  - JOUR
AU  - Fornengo, N.
AU  - Lineros, R. A.
AU  - Regis, M.
AU  - Taoso, M.
PY  - 2011
DA  - 2011//
TI  - Possibility of a Dark Matter Interpretation for the Excess in Isotropic Radio Emission Reported by ARCADE
T2  - Phys. Rev. Lett.
JO  - Physical Review Letters
SP  - 271302
EP  - 5pp
VL  - 107
IS  - 27
PB  - Amer Physical Soc
AB  - The ARCADE 2 Collaboration has recently measured an isotropic radio emission which is significantly brighter than the expected contributions from known extra-galactic sources. The simplest explanation of such excess involves a "new'' population of unresolved sources which become the most numerous at very low (observationally unreached) brightness. We investigate this scenario in terms of synchrotron radiation induced by weakly interacting massive particle (WIMP) annihilations or decays in extra-galactic halos. Intriguingly, for light-mass WIMPs with a thermal annihilation cross section, the level of expected radio emission matches the ARCADE observations.
SN  - 0031-9007
UR  - http://arxiv.org/abs/1108.0569
UR  - https://doi.org/10.1103/PhysRevLett.107.271302
DO  - 10.1103/PhysRevLett.107.271302
LA  - English
N1  - WOS:000298611000009
ID  - Fornengo_etal2011
ER  -