1203.1164 (C. Combet et al.)

Decaying dark matter: a stacking analysis of galaxy clusters to improve on current limits    [PDF]

C. Combet, D. Maurin, E. Nezri, E. Pointecouteau, J. A. Hinton, R. White

We show that a stacking approach to galaxy clusters can improve current limits on decaying dark matter by a factor $\gtrsim 5-100$, with respect to a single source analysis, for all-sky instruments such as Fermi-LAT. Based on the largest sample of X-ray-selected galaxy clusters available to date (the MCXC meta-catalogue), we provide all the astrophysical information, in particular the astrophysical term for decaying dark matter, required to perform an analysis with current instruments.

View original: http://arxiv.org/abs/1203.1164