Search Results for author: Daniel Eisenstein

Found 3 papers, 2 papers with code

Extensions to models of the galaxy-halo connection

no code implementations • 11 Aug 2020 • Boryana Hadzhiyska, Sownak Bose, Daniel Eisenstein, Lars Hernquist

We explore two widely used empirical models for the galaxy-halo connection, subhalo abundance matching (SHAM) and the halo occupation distribution (HOD) and compare their predictions with the hydrodynamical simulation IllustrisTNG (TNG) for a range of statistics that quantify the galaxy distribution at $n_{\rm gal}\approx1. 3\times10^{-3}\,[{\rm Mpc}/h]^{-3}$.

Cosmology and Nongalactic Astrophysics

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Large Covariance Matrices: Smooth Models from the 2-Point Correlation Function

1 code implementation • 6 Oct 2015 • Ross O'Connell, Daniel Eisenstein, Mariana Vargas, Shirley Ho, Nikhil Padmanabhan

We introduce a new method for estimating the covariance matrix for the galaxy correlation function in surveys of large-scale structure.

Cosmology and Nongalactic Astrophysics

Paper
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Solving Large Scale Structure in Ten Easy Steps with COLA

2 code implementations • 2 Jan 2013 • Svetlin Tassev, Matias Zaldarriaga, Daniel Eisenstein

Achieving a similar level of accuracy in halo statistics without the COLA method requires at least 3 times more timesteps than when COLA is employed.

Cosmology and Nongalactic Astrophysics

Paper
Code

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