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Baryonic feedback suppression of the matter power spectrum: a three-parameter fitting formula and its single-parameter reduction

Zhang, Pengjie
arXiv (All) · Papers
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cosmology-and-nongalactic-astrophysics
Baryonic feedback can suppress matter clustering by $\sim 10\%$ at $k\sim 1h$/Mpc and $z\sim 1$, and is therefore a major source of systematic errors in weak lensing cosmology. We investigate this effect through the ratio $S(k,z)\equiv P_{\rm hydro}(k,z)/P_{\rm DMO}(k,z)$ measured in the FLAMINGO, I
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