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We use high-resolution cosmological zoom simulations with ~200 pc resolution at z = 2 and various prescriptions for galactic outflows in order to explore the impact of winds on the morphological, dynamical, and structural properties of…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Daniel Anglés-Alcázar , Romeel Davé , Feryal Özel , Benjamin D. Oppenheimer

Over the last decades, cosmological simulations of galaxy formation have been instrumental for advancing our understanding of structure and galaxy formation in the Universe. These simulations follow the non-linear evolution of galaxies…

Astrophysics of Galaxies · Physics 2019-12-20 Mark Vogelsberger , Federico Marinacci , Paul Torrey , Ewald Puchwein

Using N-body+hydro simulations we study relations between the local environments of galaxies on 0.5 Mpc scale and properties of the luminous components of galaxies. Our numerical simulations include effects of star formation and supernova…

Astrophysics · Physics 2009-10-30 D. Elizondo , G. Yepes , R. Kates , A. Klypin

In the early universe, substantial relative "stream" velocities between the gas and dark matter arise due to radiation pressure and persist after recombination. To asses the impact of these velocities on high-redshift structure formation,…

Cosmology and Nongalactic Astrophysics · Physics 2013-08-28 Mark L. A. Richardson , Evan Scannapieco , Robert J. Thacker

We present two large cosmological N-body simulations, called Horizon Run 2 (HR2) and Horizon Run 3 (HR3), made using 6000^3 = 216 billions and 7210^3 = 374 billion particles, spanning a volume of (7.200 Gpc/h)^3 and (10.815 Gpc/h)^3,…

Cosmology and Nongalactic Astrophysics · Physics 2012-01-12 Juhan Kim , Changbom Park , Graziano Rossi , Sang Min Lee , J. Richard Gott

Dwarf galaxies are thought of as the building blocks of large galaxies such as our Milky Way. This paper presents new high-resolution hydrodynamical simulations of dwarf galaxies and their intergalactic medium with the \texttt{GIZMO} code.…

Astrophysics of Galaxies · Physics 2025-06-06 Pei-Cheng Tung , Ke-Jung Chen

We introduce the `Illustris zoom simulation project', which allows the study of selected galaxies forming in the $\Lambda$CDM cosmology with a 40 times better mass resolution than in the parent large-scale hydrodynamical Illustris…

Astrophysics of Galaxies · Physics 2016-08-01 Martin Sparre , Volker Springel

We study the properties of black holes and their host galaxies across cosmic time in the Illustris simulation. Illustris is a large scale cosmological hydrodynamical simulation which resolves a (106.5 Mpc)^3 volume with more than 12 billion…

Astrophysics of Galaxies · Physics 2015-07-15 Debora Sijacki , Mark Vogelsberger , Shy Genel , Volker Springel , Paul Torrey , Greg Snyder , Dylan Nelson , Lars Hernquist

Upcoming galaxy surveys and 21-cm experiments targeting high redshifts $z\gtrsim 6$ are highly complementary probes of galaxy formation and reionization. However, in order to expedite the large volume simulations relevant for 21-cm…

Cosmology and Nongalactic Astrophysics · Physics 2021-09-22 Jordan Mirocha , Paul La Plante , Adrian Liu

We present a novel method for simulation of the interior of large cosmic voids, suitable for study of the formation and evolution of objects lying within such regions. Following Birkhoff's theorem, void regions dynamically evolve as…

Astrophysics · Physics 2009-11-10 David M. Goldberg , Michael S. Vogeley

We introduce the Ultramarine simulation, an extremely large $N$-body simulation of the structure formation and evolution to redshift 5.5 at which cosmic reionization was just completed. The simulation evolves 2.1 trillion particles within a…

Cosmology and Nongalactic Astrophysics · Physics 2022-11-23 Qiao Wang , Liang Gao , Cheng Meng

We present results from a large volume simulation of Hydrogen reionization. We combine 3d radiative transfer calculations and an N-body simulation, describing structure formation in the intergalactic medium, to detail the growth of HII…

We introduce a new suite of radiation-hydrodynamical simulations of galaxy formation and reionization called Aurora. The Aurora simulations make use of a spatially adaptive radiative transfer technique that lets us accurately capture the…

Astrophysics of Galaxies · Physics 2017-01-18 Andreas H. Pawlik , Alireza Rahmati , Joop Schaye , Myoungwon Jeon , Claudio Dalla Vecchia

We introduce a suite of cosmological volume simulations to study the evolution of galaxies as part of the Feedback in Realistic Environments project. FIREbox, the principal simulation of the present suite, provides a representative sample…

The formation of galaxies in hierarchical cosmogonies is studied using high resolution N-body plus SPH hydrodynamics simulations. The collapse of structure is followed self-consistently from Mpc scale filamentary structures to kpc scale…

Astrophysics · Physics 2007-05-23 F J Summers

Using high resolution N-body simulations with hydrodynamics and star formation, we investigate interactions and the resulting starbursts in galaxies with properties typical of $z\sim 3$. We apply spectral population models to produce…

Astrophysics · Physics 2007-05-23 R. S. Somerville , G. Rosenfeld , T. S. Kolatt , A. Dekel , J. C. Mihos , J. R. Primack

We review theoretical approaches to the study of galaxy formation, with emphasis on the role of hydrodynamic simulations in modeling the high redshift galaxy population. We present new predictions for the abundance of star-forming galaxies…

Astrophysics · Physics 2007-05-23 David H. Weinberg , Romeel Dave' , Jeffrey P. Gardner , Lars Hernquist , Neal Katz

We examine the properties of atomic hydrogen (HI) associated with galaxies in the EAGLE simulations of galaxy formation. EAGLE's feedback parameters were calibrated to reproduce the stellar mass function and galaxy sizes at $z=0.1$, and we…

We examine the accretion and merger histories of central and satellite galaxies in a smoothed particle hydrodynamics (SPH) cosmological simulation that resolves galaxies down to 7e9 M[Sun]. Most friends-of-friends halos in the simulation…

Astrophysics · Physics 2014-11-18 Vimal Simha , David H. Weinberg , Romeel Dave , Oleg Y. Gnedin , Neal Katz , Dusan Keres

Halo models provide a simple and computationally inexpensive way to investigate the connection between galaxies and their dark matter haloes. However, these models rely on the assumption that the role of baryons can be easily parametrized…

Cosmology and Nongalactic Astrophysics · Physics 2020-01-08 Gillian D. Beltz-Mohrmann , Andreas A. Berlind , Adam O. Szewciw
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