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An Empirical Model For Intrinsic Alignments: Insights From Cosmological Simulations
Nicholas Van Alfen, Duncan Campbell, Jonathan Blazek +5
We extend current models of the halo occupation distribution (HOD) to include a flexible, empirical framework for the forward modeling of the intrinsic alignment (IA) of galaxies.…
A Differentiable Model of the Evolution of Dark Matter Halo Concentration
Dash Stevanovich, Andrew P. Hearin, Daisuke Nagai
We introduce a new model of the evolution of the concentration of dark matter halos, c(t). For individual halos, our model approximates c(t) as a power law with a time-dependent in…
Halo Properties from Observable Measures of Environment: I. Halo and Subhalo Masses
Haley Bowden, Peter Behroozi, Andrew Hearin
The stellar mass - halo mass relation provides a strong basis for connecting galaxies to their host dark matter halos in both simulations and observations. Other observable informa…
Cluster Cosmology Without Cluster Finding
Enia Xhakaj, Alexie Leauthaud, Johannes Lange +5
We propose that observations of super-massive galaxies contain cosmological constraining power similar to conventional cluster cosmology, and we provide promising indications that…
Constraints on from a full-scale and full-shape analysis of redshift-space clustering and galaxy-galaxy lensing in BOSS
Johannes U. Lange, Andrew P. Hearin, Alexie Leauthaud +5
We present a novel simulation-based cosmological analysis of galaxy-galaxy lensing and galaxy redshift-space clustering. Compared to analysis methods based on perturbation theory,…