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We present the Empirical Dust Attenuation (EDA) framework -- a flexible prescription for assigning realistic dust attenuation to simulated galaxies based on their physical properties. We use the EDA to forward model synthetic observations…

We use hydrodynamical simulations of galaxy clusters and groups to study the effect of pre-heating on the entropy structure of the ICM. Our simulations account for non-gravitational heating of the gas either by imposing a minimum entropy…

天体物理学 · 物理学 2009-11-11 S. Borgani , A. Finoguenov , S. T. Kay , T. J. Ponman , V. Springel , P. Tozzi , G. M. Voit

We numerically simulate some of the most critical physical processes in galaxy formation: The supernova feedback, in conjunction with gasdynamics and gravity, plays a crucial role in determining how galaxies arise within the context of a…

天体物理学 · 物理学 2015-06-24 G. Yepes , R. Kates , A. Khokhlov , A. Klypin

The impact of feedback from Active Galactic Nuclei (AGN) on the cosmological evolution of the large scale structure is a long studied problem. However, it is still not well understood how the feedback energy couples to the ambient medium to…

宇宙学与河外天体物理 · 物理学 2024-05-20 Rudrani Kar Chowdhury , Suchetana Chatterjee , Ankit Paul , Craig L. Sarazin , Jane Lixin Dai

Galaxy formation depends critically on the physical state of gas in the circumgalactic medium (CGM) and its interface with the intergalactic medium (IGM), determined by the complex interplay between inflows from the IGM and outflows from…

星系天体物理 · 物理学 2021-11-16 Daniele Sorini , José Oñorbe , Joseph F. Hennawi , Zarija Lukić

We compute and study the infrared and sub-mm properties of high redshift ($z \gtrsim 1$) simulated clusters and proto-clusters. The results of a large set of hydro-dynamical zoom-in simulations including active galactic nuclei (AGN)…

We present a series of high-resolution cosmological simulations of galaxy formation to z=0, spanning halo masses ~10^8-10^13 M_sun, and stellar masses ~10^4-10^11. Our simulations include fully explicit treatment of both the multi-phase ISM…

宇宙学与河外天体物理 · 物理学 2014-11-13 Philip F. Hopkins , Dusan Keres , Jose Onorbe , Claude-Andre Faucher-Giguere , Eliot Quataert , Norm Murray , James S. Bullock

We study present-day galaxy clustering in the EAGLE cosmological hydrodynamical simulation. EAGLE's galaxy formation parameters were calibrated to reproduce the redshift $z=0.1$ galaxy stellar mass function, and the simulation also…

We use hydrodynamical simulations of different dark energy cosmologies to investigate the concentration-mass (c-M) relation in galaxy clusters. In particular, we consider a reference \Lambda CDM model, two quintessence models with inverse…

宇宙学与河外天体物理 · 物理学 2015-06-05 Cristiano De Boni , Stefano Ettori , Klaus Dolag , Lauro Moscardini

The XRISM Resolve X-ray spectrometer allows to gain detailed insight into gas motions of the intra cluster medium (ICM) of galaxy clusters. Current simulation studies focus mainly on statistical comparisons, making the comparison to the…

宇宙学与河外天体物理 · 物理学 2026-03-16 Frederick Groth , Milena Valentini , Benjamin A. Seidel , Stephan Vladutescu-Zopp , Veronica Biffi , Klaus Dolag , Jenny G. Sorce

We present a detection of the intrinsic galaxy alignments in the CAMELS suite of hydrodynamic simulations. We find that the alignment amplitude depends significantly on cosmological and supernova feedback parameters - specifically…

宇宙学与河外天体物理 · 物理学 2026-02-03 Daniel Bilsborrow , Niall Jeffrey

We present results on the X-ray properties of clusters and groups of galaxies, extracted from a large hydrodynamical simulation. We used the GADGET code to simulate a LambdaCDM model within a box of 192 Mpc/h on a side, with 480^3 dark…

天体物理学 · 物理学 2009-11-10 S. Borgani , G. Murante , V. Springel , A. Diaferio , K. Dolag , L. Moscardini , G. Tormen , L. Tornatore , P. Tozzi

Gradually, the $\Lambda$CDM model starts to be challenged by observational data. Upcoming cosmological surveys will increase the number of detected galaxy clusters by several orders of magnitude. Therefore, shortly, clusters will provide…

宇宙学与河外天体物理 · 物理学 2022-08-25 E. Artis , J-B Melin , J. G. Bartlett , C. Murray

We use a high-resolution grid-based hydrodynamics method to simulate the multi-phase interstellar medium in a Milky Way-size quiescent disk galaxy. The models are global and three-dimensional, and include a treatment of star formation and…

天体物理学 · 物理学 2009-11-13 Elizabeth J. Tasker , Greg L. Bryan

A method we developed recently for the reconstruction of the initial density field in the nearby Universe is applied to the Sloan Digital Sky Survey Data Release 7. A high-resolution N-body constrained simulation (CS) of the reconstructed…

宇宙学与河外天体物理 · 物理学 2016-11-15 Huiyuan Wang , H. J. Mo , Xiaohu Yang , Youcai Zhang , JingJing Shi , Y. P. Jing , Chengze Liu , Shijie Li , Xi Kang , Yang Gao

Using high-resolution simulations with explicit treatment of stellar feedback physics based on the FIRE (Feedback in Realistic Environments) project, we study how galaxy formation and the interstellar medium (ISM) are affected by magnetic…

We present a comprehensive study of the star formation histories of massive-quenched galaxies at $z=3$ in 3 semi-analytic models (SHARK, GAEA, GALFORM) and 3 cosmological hydrodynamical simulations (EAGLE, IllustrisTNG, Simba). We study the…

We have performed a series of N-body/hydrodynamical (TreeSPH) simulations of clusters and groups of galaxies, selected from cosmological N-body simulations within a $\Lambda$CDM framework: these objects have been re-simulated at higher…

天体物理学 · 物理学 2008-12-18 A. D. Romeo , J. Sommer-Larsen , L. Portinari , V. Antonuccio-Delogu

This is the first attempt to construct detailed X-ray spectra of clusters of galaxies from the results of high-resolution hydrodynamic simulations and simulate X-ray observations in order to study velocity fields of the intracluster medium…

天体物理学 · 物理学 2009-11-10 Yutaka Fujita , Tomoaki Matsumoto , Keiichi Wada , Tae Furusho