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Updated: Jul 11, 2026

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Searching for decaying axionlike dark matter from clusters of galaxies
Signe Riemer-Sørensen1, Konstantin Zioutas, Steen H Hansen
1Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen, Denmark. signe@dark-cosmology.dk
Abstract:
We constrain the lifetime of radiatively decaying dark matter in clusters of galaxies inspired by generic Kaluza-Klein axions, which have been invoked as a possible explanation for the solar coronal x-ray emission. These particles can be produced inside stars and remain confined by the gravitational potential of clusters. By analyzing x-ray observations of merging clusters, where gravitational lensing observations have identified massive, baryon poor structures, we derive the first cosmological lifetime constraint on this kind of particles of tau > or = 10(23) sec.
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