Stacked caustic profiles of 122 galaxy clusters constrain the chameleon f(R) parameter to |f_R0| below 4.4×10^-6 using caustic data alone.
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Outer regions of galaxy clusters as a new probe to test modifications to gravity
Stacked caustic profiles of 122 galaxy clusters constrain the chameleon f(R) parameter to |f_R0| below 4.4×10^-6 using caustic data alone.