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

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arxiv 1203.1164 v1 pith:DSVEKLRQ submitted 2012-03-06 astro-ph.CO astro-ph.HEhep-ph

C. Combet , D. Maurin , E. Nezri , E. Pointecouteau , J. A. Hinton , R. White This is my paper
classification astro-ph.COastro-ph.HEhep-ph
keywords analysisclusterscurrentdarkdecayinggalaxymatterastrophysical
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abstract

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.

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