Sep 12 – 16, 2016
Europe/Zurich timezone
There is a live webcast for this event.

Cosmological constraints on the electromagnetic decay of exotic particles

Sep 15, 2016, 5:50 PM
503/1-001 - Council Chamber (CERN)

503/1-001 - Council Chamber


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Oral Contributions Dark matter (indirect detection) Dark matter (indirect detection)


Vivian Poulin (LAPTh, Annecy-le-vieux and RWTH, Aachen)


In this talk, I would like to review how the combination of CMB power spectra, spectral distortions and BBN can be used to put stringeant constraints on the lifetime and abundance of exotic particles (such as dark matter but not only) with electromagnetic decay products. I will emphasize that this has the major advantages over cosmic rays of beeing (almost) free of theoritical uncertainties and to extend to very short lifetimes (few minutes after the big bang). Results using the very last Planck CMB data will be shown. I will then present how 21cm signal, one of the main target of future experiments, could be used in order to improve (but not always !) over these bounds.

Primary author

Vivian Poulin (LAPTh, Annecy-le-vieux and RWTH, Aachen)


Pasquale Serpico (Unite Reseaux du CNRS (FR))

Presentation materials