Jeremiah P. Ostriker

TL;DR: In this paper, a large-scale hydrodynamic simulation with heuristic criteria for galaxy formation was used to investigate how the galaxy formation is related to physical parameters such as the mass density and the gas tem- perature.

TL;DR: In this paper, a large-scale structure simulation normalized to the Wilkinson Microwave Anisotropy Probe (WMAP) observations was used to evaluate the occurrence of arcs for various source redshifts, showing that the frequency of strongly lensed background galaxies is a steep function of source redshift.

TL;DR: In this article, the reaction of a globular star cluster to a time-varying tidal perturbation (gravitational shock) using self-consistent N-body simulations was studied.

TL;DR: In this article, the authors investigate the simultaneous constraints set on the cosmic star formation history from various observations, including stellar mass density and extragalactic background light (EBL), and compare results based on: (1) direct observations of past light-cone, (2) a model using local fossil evidence constrained by SDSS observations at z ~ 0 (the "Fossil" model), and (3) theoretical ab initio models from three calculations of cosmic star creation history: (a) new 10243 total variation diminishing (TVD) cosmological hydrod

TL;DR: In this article, it was shown that the lensing induced dispersions on truly standard candles are 0.04 and 0.02 mag at redshift z = 1 and z = 0.5, respectively, in a COBE-normalized cold dark matter universe.