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- W4385958850 abstract "In this study, we perform a halo-finder code comparison between Rockstar and CompaSO. Based on our previous analysis aiming at quantifying resolution of $N$-body simulations by exploiting large (up to $N=4096^3$) simulations of scale-free cosmologies run using Abacus, we focus on convergence of the HMF, 2PCF and mean radial pairwise velocities of halo centres selected with the aforementioned two algorithms. We establish convergence, for both Rockstar and CompaSO, of mass functions at the $1%$ precision level and of the mean pairwise velocities (and also 2PCF) at the $2%$ level. At small scales and small masses, we find that Rockstar exhibits greater self-similarity, and we also highlight the role played by the merger-tree post-processing of CompaSO halos on their convergence. Finally, we give resolution limits expressed as a minimum particle number per halo in a form that can be directly extrapolated to LCDM." @default.
- W4385958850 created "2023-08-18" @default.
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- W4385958850 date "2023-08-01" @default.
- W4385958850 modified "2023-09-23" @default.
- W4385958850 title "Convergence of halo statistics: code comparison between Rockstar and CompaSO using scale-free simulations" @default.
- W4385958850 doi "https://doi.org/10.48550/arxiv.2308.00438" @default.
- W4385958850 hasPublicationYear "2023" @default.
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