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The fate of baryons in counterfactual universes
Boon Kiat Oh, John A. Peacock, Sadegh Khochfar +1
We present results from nine simulations that compare the standard Cold Dark Matter cosmology (CDM) with counterfactual universes, for approximately using t…
The Cosmic Mach Number as an Environment Measure for the Underlying Dark Matter Density Field
Romain Meriot, Sadegh Khochfar, Jose Onorbe +1
Using cosmological dark matter only simulations of a Gpc volume from the Legacy simulation project, we calculate Cosmic Mach Numbers (CMN) and perform a theoretical i…
Formation of First Galaxies inside Density Peaks and Voids under the Influence of Dark Matter-Baryon Streaming Velocity, I: Initial Condition and Simulation Scheme
Kyungjin Ahn, Britton D. Smith
We present a systematic study of the cosmic variance that existed in the formation of first stars and galaxies. We focus on the cosmic variance induced by the large-scale density a…
Probing the Dependence of the Intergalactic Medium on Large Scale Environment Using the Low Redshift Lyman Alpha Forest
Stephanie Tonnesen, Britton D. Smith, Juna Kollmeier +1
We examine the statistics of the low-redshift Ly-alpha forest in an adaptive mesh refinement hydrodynamic cosmological simulation of sufficient volume to include distinct large-sca…
Grackle: a Chemistry and Cooling Library for Astrophysics
Britton D. Smith, Greg L. Bryan, Simon C. O. Glover +11
We present the Grackle chemistry and cooling library for astrophysical simulations and models. Grackle provides a treatment of non-equilibrium primordial chemistry and cooling for…
The Birth of a Galaxy - III. Propelling reionisation with the faintest galaxies
John H. Wise, Vasiliy G. Demchenko, Martin T. Halicek +4
Starlight from galaxies plays a pivotal role throughout the process of cosmic reionisation. We present the statistics of dwarf galaxy properties at z > 7 in haloes with masses up t…