Hydrodynamical Coupling of Mass and Momentum in Multiphase Galactic Winds
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In this article, the authors proposed a method to solve the problem of energy-efficient energy harvesting in the context of renewable energy and renewable energy technologies, which they called energy-aware energy harvesting.Abstract:
National Science Foundation [1228509]; DOE Office of Science User Facility [DE-AC05-00OR22725]read more
Citations
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Enzo: An Adaptive Mesh Refinement Code for Astrophysics
Greg L. Bryan,Michael L. Norman,Brian W. O'Shea,Tom Abel,John H. Wise,Matthew J. Turk,Daniel R. Reynolds,David C. Collins,Peng Wang,Samuel W. Skillman,Britton D. Smith,Robert P. Harkness,James Bordner,Ji-hoon Kim,Michael Kuhlen,Hao Xu,Nathan J. Goldbaum,Cameron Hummels,Alexei G. Kritsuk,Elizabeth J. Tasker,Stephen Skory +20 more
TL;DR: Enzo as discussed by the authors uses block-structured adaptive mesh refinement to provide high spatial and temporal resolution for modeling astrophysical fluid flows, which can be run in one, two, and three dimensions, and supports a wide variety of physics, including hydrodynamics, ideal and non-ideal magnetohydrodynamic, N-body dynamics, primordial gas chemistry, optically thin radiative cooling of primordial and metal-enriched plasmas, and models for star formation and feedback in a cosmological context.
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A characteristic scale for cold gas
TL;DR: In this paper, it was shown that clouds of optically thin, pressure-confined gas are prone to fragmentation as they cool below the temperature of 10^6$ K, and that the column density through an individual fragment is essentially independent of environment.
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The growth and entrainment of cold gas in a hot wind
Max Gronke,S. Peng Oh +1 more
TL;DR: In this paper, the authors showed that cooling is often not efficient enough to prevent the destruction of cold gas, and identified regions of parameter space where the cooling efficiency of the mixed, ''warm'' gas is sufficiently large to contribute new comoving cold gas which can significantly exceed the original cold gas mass.
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Figuring Out Gas & Galaxies in Enzo (FOGGIE). I. Resolving Simulated Circumgalactic Absorption at 2 < z < 2.5
Molly S. Peeples,Lauren Corlies,Jason Tumlinson,Brian W. O'Shea,Nicolas Lehner,John M. O'Meara,J. Christopher Howk,Britton D. Smith,John H. Wise,Cameron Hummels +9 more
TL;DR: In this article, the authors present simulations from the new "Figuring Out Gas & Galaxies in Enzo" (FOGGIE) project, which focuses on extreme spatial and mass resolution in the circumgalactic medium (CGM) surrounding galaxies.
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Cosmological simulations of the circumgalactic medium with 1 kpc resolution: enhanced H I column densities
Freeke van de Voort,Freeke van de Voort,Volker Springel,Volker Springel,Nir Mandelker,Nir Mandelker,Frank C. van den Bosch,Rüdiger Pakmor,Rüdiger Pakmor +8 more
TL;DR: In this paper, a zoom-in simulation of a Milky Way-mass galaxy with standard mass refinement and additional uniform spatial refinement within the virial radius is presented, which results in a detailed view of its gaseous halo at unprecedented (1 kpc) uniform resolution with only a moderate increase in computational time.
References
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On Upstream Differencing and Godunov-Type Schemes for Hyperbolic Conservation Laws
TL;DR: This paper reviews some of the recent developments in upstream difference schemes through a unified representation, in order to enable comparison between the various schemes.
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The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
Joop Schaye,Robert A. Crain,Richard G. Bower,Michelle Furlong,Matthieu Schaller,Tom Theuns,Tom Theuns,Claudio Dalla Vecchia,Claudio Dalla Vecchia,Carlos S. Frenk,Ian G. McCarthy,John C. Helly,Adrian Jenkins,Yetli Rosas-Guevara,Simon D. M. White,Maarten Baes,C. M. Booth,C. M. Booth,Peter Camps,Julio F. Navarro,Yan Qu,Alireza Rahmati,Till Sawala,Peter A. Thomas,James W. Trayford +24 more
TL;DR: The Virgo Consortium's EAGLE project as discussed by the authors is a suite of hydrodynamical simulations that follow the formation of galaxies and black holes in representative volumes, where thermal energy is injected into the gas, allowing winds to develop without predetermined speed or mass loading factors.
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Restoration of the contact surface in the HLL-Riemann solver
TL;DR: The missing contact surface in the approximate Riemann solver of Harten, Lax, and van Leer is restored and the resulting solver is simpler and computationally more efficient than the latter, particulaly for non-ideal gases.
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Galactic Winds
TL;DR: Galactic winds are the primary mechanism by which energy and metals are recycled in galaxies and are deposited into the intergalactic medium New observations are revealing the ubiquity of this process, particularly at high redshift as discussed by the authors.
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Properties of galaxies reproduced by a hydrodynamic simulation
Mark Vogelsberger,Shy Genel,Volker Springel,Volker Springel,Paul Torrey,Debora Sijacki,Dandan Xu,Gregory F. Snyder,Simeon Bird,Dylan Nelson,Lars Hernquist +10 more
TL;DR: A simulation that starts 12 million years after the Big Bang, and traces 13 billion years of cosmic evolution with 12 billion resolution elements in a cube of 106.5 megaparsecs a side yields a reasonable population of ellipticals and spirals, reproduces the observed distribution of galaxies in clusters and characteristics of hydrogen on large scales, and at the same time matches the ‘metal’ and hydrogen content of galaxies on small scales.