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Feedback effects generated by supernovae (SNe) and active galactic nuclei (AGNs) are pivotal in shaping the evolution of galaxies and their present-day structures. However, our understanding of the specific mechanisms operating at galactic…

星系天体物理 · 物理学 2023-07-20 Kentaro Nagamine

Galaxy evolution is shaped by star formation and stellar feedback at scales unresolved by current high-resolution cosmological simulations. Precise subgrid models are thus necessary, and different approaches have been developed. However,…

星系天体物理 · 物理学 2026-02-17 Maxime Rey , Jérémy Blaizot , Taysun Kimm , Joakim Rosdahl , Léo Michel-Dansac

We present a new suite of large-volume cosmological hydrodynamical simulations called cosmo-OWLS. They form an extension to the OverWhelmingly Large Simulations (OWLS) project, and have been designed to help improve our understanding of…

宇宙学与河外天体物理 · 物理学 2015-06-18 Amandine M. C. Le Brun , Ian G. McCarthy , Joop Schaye , Trevor J. Ponman

We present a multi-epoch analysis of the galaxy populations formed within the cosmological hydrodynamical simulations presented in Vogelsberger et al. (2013). These simulations explore the performance of a recently implemented feedback…

宇宙学与河外天体物理 · 物理学 2015-06-16 Paul Torrey , Mark Vogelsberger , Shy Genel , Debora Sijacki , Volker Springel , Lars Hernquist

Modern hydrodynamical simulations offer nowadays a powerful means to trace the evolution of the X-ray properties of the intra-cluster medium (ICM) during the cosmological history of the hierarchical build up of galaxy clusters. In this…

天体物理学 · 物理学 2009-11-13 S. Borgani , A. Diaferio , K. Dolag , S. Schindler

LCDM is remarkably successful in predicting the cosmic microwave background and large-scale structure, and LCDM parameters have been determined with only mild tensions between different types of observations. Hydrodynamical simulations…

星系天体物理 · 物理学 2015-05-13 Joel R. Primack

Recent cosmological hydrodynamical simulations are able to reproduce numerous statistical properties of galaxies that are consistent with observational data. Yet, the adopted subgrid models strongly affect the simulation outcomes, limiting…

星系天体物理 · 物理学 2020-11-02 Hui Li , Mark Vogelsberger , Federico Marinacci , Laura Sales , Paul Torrey

We present results from thirteen cosmological simulations that explore the parameter space of the "Evolution and Assembly of GaLaxies and their Environments" (EAGLE) simulation project. Four of the simulations follow the evolution of a…

Galaxy evolution is driven by star formation and stellar feedback on scales unresolved by current high-resolution cosmological simulations, requiring robust subgrid models. However, these models remain degenerate, often calibrated primarily…

星系天体物理 · 物理学 2026-02-17 Maxime Rey , Jérémy Blaizot , Taysun Kimm , Joakim Rosdahl , Léo Michel-Dansac , Valentin Mauerhofer

We introduce the Virgo Consortium's EAGLE project, a suite of hydrodynamical simulations that follow the formation of galaxies and black holes in representative volumes. We discuss the limitations of such simulations in light of their…

Cosmological hydrodynamical simulations of galaxy evolution are increasingly able to produce realistic galaxies, but the largest hurdle remaining is in constructing subgrid models that accurately describe the behavior of stellar feedback.…

星系天体物理 · 物理学 2015-06-12 Cameron Hummels , Greg Bryan , Britton Smith , Matthew Turk

We present a study of the galaxy population predicted by hydrodynamical simulations for a set of 19 galaxy clusters based on the GADGET-2 Tree+SPH code. These simulations include gas cooling, star formation, a detailed treatment of stellar…

天体物理学 · 物理学 2009-11-11 A. Saro , S. Borgani , L. Tornatore , K. Dolag , G. Murante , A. Biviano , F. Calura , S. Charlot

In this work, we present results for the photometric and clustering properties of galaxies that arise in a LambdaCDM hydrodynamical simulation of the local universe. The present-day distribution of matter was constructed to match the…

宇宙学与河外天体物理 · 物理学 2015-05-18 S. E. Nuza , K. Dolag , A. Saro

We compare the properties of galaxies that form in a cosmological simulation without strong feedback to observations at z=0. We confirm previous findings that models without strong feedback overproduce the observed galaxy baryonic mass…

宇宙学与河外天体物理 · 物理学 2015-05-13 Dušan Kereš , Neal Katz , Romeel Dave , Mark Fardal , David H. Weinberg

We address the issue of numerical convergence in cosmological smoothed particle hydrodynamics simulations using a suite of runs drawn from the EAGLE project. Our simulations adopt subgrid models that produce realistic galaxy populations at…

星系天体物理 · 物理学 2020-05-08 Aaron D. Ludlow , Joop Schaye , Matthieu Schaller , Richard Bower

We present cosmological hydrodynamic simulations performed to study evolution of galaxy population. The simulations follow timed release of mass, energy, and metals by stellar evolution and employ phenomenological treatments of supernova…

星系天体物理 · 物理学 2014-09-15 Takashi Okamoto , Ikkoh Shimizu , Naoki Yoshida

Cosmological simulations are powerful tools in the context of structure formation. They allow us to explore the assembly and clustering of dark matter halos, to validate or reject possible scenarios of structure formation, and to…

宇宙学与河外天体物理 · 物理学 2025-02-12 Milena Valentini , Klaus Dolag

We investigate the evolution of galaxy masses and star formation rates in the Evolution and Assembly of Galaxies and their Environment (EAGLE) simulations. These comprise a suite of hydrodynamical simulations in a $\Lambda$CDM cosmogony…

Cosmological hydrodynamical simulations of galaxy formation in representative regions of the Universe typically need to resort to subresolution models to follow some of the feedback processes crucial for galaxy formation. Here, we show that…

宇宙学与河外天体物理 · 物理学 2015-06-05 Ewald Puchwein , Volker Springel

The hot ($>10^6$ K) phase of the circumgalactic medium (CGM) contains a large fraction of baryons in galaxies. It also retains signatures of the processes that shaped the galaxies, such as feedback from active galactic nuclei (AGNs) and…

星系天体物理 · 物理学 2022-09-08 Urmila Chadayammuri , Akos Bogdan , Benjamin Oppenheimer , Ralph Kraft , William Forman , Christine Jones
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