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Gamma-ray and Radio Constraints of High Positron Rate Dark Matter Models Annihilating into New Light Particles
Lars Bergstrom, Gianfranco Bertone, Torsten Bringmann +2
The possibility of explaining the positron and electron excess recently found by the PAMELA and ATIC collaborations in terms of dark matter (DM) annihilation has attracted consider…
Angular correlations in the cosmic gamma-ray background from dark matter annihilation around intermediate-mass black holes
Marco Taoso, Shin'ichiro Ando, Gianfranco Bertone +1
Dark matter (DM) annihilation could in principle contribute to the diffuse cosmic gamma-ray back- ground (CGB). While with standard assumptions for cosmological and particle physic…
Gamma-ray and radio tests of the e+e- excess from DM annihilations
Gianfranco Bertone, Marco Cirelli, Alessandro Strumia +1
PAMELA and ATIC recently reported an excess in e+e- cosmic rays. We show that if it is due to Dark Matter annihilations, the associated gamma-ray flux and the synchrotron emission…
Dark Matter annihilations in Pop III stars
Marco Taoso, Gianfranco Bertone, Georges Meynet +1
We study the impact of the capture and annihilation of Weakly Interacting Massive Particles (WIMPs) on the evolution of Pop III stars. With a suitable modification of the Geneva st…