bigbang

Early Universe Relics:
Constraining and Detecting Non-Thermal Dark Matter

Superheavy dark matter can be produced non-thermally after inflation, for example during reheating. This specific particle dark matter can be probed by multi-wavelength observations of its annihilation products. The latter include gamma-rays, neutrinos, and radio emission from electrons produced, apart from being direct decay products, in the hadronic jets from quarks and gluons in the decay products. Gianfranco Bertone, Joseph Silk (Oxford) and me have recently started to explore constraints from the synchrotron emission that are both relevant for thermally produced weakly interacting dark matter (WIMP) motivated by supersymmetry, and for non-thermal dark matter.

Publications

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