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The study of the cross-correlation angular power spectrum betweengravitational tracers and electromagnetic signals can be a powerful tool toconstrain Dark Matter (DM) microscopic properties. In this work we correlate\Fermi\ diffuse \g-ray maps with catalogues of galaxy clusters. To emphasizethe sensitivity to a DM signal, we select clusters at low-redshift $0<z<0.2$and with large-halo mass $M_{500}>10^{13}M_\odot$. The analysis is performedwith four catalogues in different wavebands, including infrared, optical andX-rays. No evidence for a DM signal is identified. On the other hand, we derivecompetitive bounds: the thermal cross-section is excluded at 95\% C.L. for DMmasses below 20 GeV and annihilation in the $\tau^+-\tau^-$ channel.

Bounds on WIMP dark matter from galaxy clusters at low redshift