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Contact: Caltech Media Relations
California Institute of Technology

MACS J0717.5+3745

Caption: Hubble Space Telescope optical image (green), mass map (Limousin et al 2012; contours), and CSO/Bolocam 140 GHz (red) and 268 GHz (blue) maps of the galaxy cluster MACS J0717+3745. The lack of 268 GHz signal at subcluster B (second large concentration from upper right) is due to the kinetic Sunyaev-Zeldovich effect.

Credit: P. Korngut

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