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相关论文: NIHAO XXII: Introducing black hole formation, accr…

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We introduce project NIHAO (Numerical Investigation of a Hundred Astrophysical Objects), a set of 100 cosmological zoom-in hydrodynamical simulations performed using the gasoline code, with an improved implementation of the SPH algorithm.…

We use the NIHAO (Numerical Investigation of Hundred Astrophysical Objects) cosmological simulations to study the effects of galaxy formation on key properties of dark matter (DM) haloes. NIHAO consists of $\simeq 90$ high-resolution SPH…

We present a systematic analysis of the reaction of dark matter distribution to galaxy formation across more than eight orders of magnitude in stellar mass. We extend the previous work presented in the NIHAO-IV paper (Tollet et al.) by…

星系天体物理 · 物理学 2020-04-15 Andrea V. Macciò , Samuele Crespi , Marvin Blank , Xi Kang

The NIHAO cosmological simulations form a collection of a hundred high-resolution galaxies. We used these simulations to test the impact of stellar feedback on the morphology of the HI distribution in galaxies. We ran a subsample of twenty…

星系天体物理 · 物理学 2018-11-14 Hind Al Noori , Andrea V. Macciò , Aaron A. Dutton , Keri L. Dixon

We use the NIHAO simulations to investigate the effects of baryonic physics on the time evolution of Dark Matter central density profiles. The sample is made of $\approx 70$ independent high resolution hydrodynamical simulations of galaxy…

This paper presents a study of the impact of supermassive black hole (SMBH) feedback on dark matter (DM) halos in numerical NIHAO simulations of galaxies. In particular, the amount of DM displaced via active galactic nuclei (AGN) feedback…

星系天体物理 · 物理学 2024-03-07 Nikhil Arora , Stephane Courteau , Andrea V. Maccio , Changhyun Cho , Raj Patel , Connor Stone

We use cosmological hydrodynamical galaxy formation simulations from the NIHAO project to investigate the impact of the threshold for star formation on the response of the dark matter (DM) halo to baryonic processes. The fiducial NIHAO…

星系天体物理 · 物理学 2019-04-10 Aaron A. Dutton , Andrea V. Macciò , Tobias Buck , Keri L. Dixon , Marvin Blank , Aura Obreja

The significant diversity of rotation curve (RC) shapes in dwarf galaxies has recently emerged as a challenge to LCDM: in dark matter (DM) only simulations, DM halos have a universal cuspy density profile that results in self-similar RC…

Aims. We study the individual and cumulative impact of stellar feedback processes on massive black hole (MBH) growth in a simulated low-mass dwarf galaxy. Methods. A suite of high-resolution radiation-hydrodynamic simulations called Noctua…

We use ~100 cosmological galaxy formation zoom-in simulations using the smoothed particle hydrodynamics code {\sc gasoline} to study the effect of baryonic processes on the mass profiles of cold dark matter haloes. The haloes in our study…

We use cosmological hydrodynamical galaxy formation simulations from the NIHAO project to investigate the response of cold dark matter (CDM) haloes to baryonic processes. Previous work has shown that the halo response is primarily a…

星系天体物理 · 物理学 2020-12-02 Aaron A. Dutton , Tobias Buck , Andrea V. Macciò , Keri L. Dixon , Marvin Blank , Aura Obreja

We study the hot and cold circum-galactic medium (CGM) of 86 galaxies of the cosmological, hydrodynamical simulation suite NIHAO. NIHAO allows a study of how the $z=0$ CGM varies across 5 orders of magnitude of stellar mass using OVI and HI…

星系天体物理 · 物理学 2016-10-19 Thales A. Gutcke , Greg S. Stinson , Andrea V. Macciò , Liang Wang , Aaron A. Dutton

We perform the first fully nonlinear numerical simulations of black-hole binaries with mass ratios 100:1. Our technique for evolving such extreme mass ratios is based on the moving puncture approach with a new gauge condition and an optimal…

广义相对论与量子宇宙学 · 物理学 2011-07-04 Carlos O. Lousto , Yosef Zlochower

We quantify the impact of galaxy formation on dark matter halo shapes using cosmological simulations at redshift $z=0$. The haloes are drawn from the IllustrisTNG project, a suite of magneto-hydrodynamic simulations of galaxies. We focus on…

星系天体物理 · 物理学 2022-08-03 Kun Ting Eddie Chua , Mark Vogelsberger , Annalisa Pillepich , Lars Hernquist

Detailed studies of galaxy formation require clear definitions of the structural components of galaxies. Precisely defined components also enable better comparisons between observations and simulations. We use a subsample of eighteen…

星系天体物理 · 物理学 2016-04-27 A. Obreja , G. S. Stinson , A. A. Dutton , A. V. Macciò , L. Wang , X. Kang

We present cosmological hydrodynamical simulations of eight Milky Way-sized haloes that have been previously studied with dark matter only in the Aquarius project. For the first time, we employ the moving-mesh code AREPO in zoom simulations…

宇宙学与河外天体物理 · 物理学 2015-06-16 Federico Marinacci , Ruediger Pakmor , Volker Springel

We present an update to the multiphase SPH galaxy formation code by Scannapieco et al. We include a more elaborate treatment of the production of metals, cooling rates based on individual element abundances, and a scheme for the turbulent…

星系天体物理 · 物理学 2013-07-17 Michael Aumer , Simon White , Thorsten Naab , Cecilia Scannapieco

We describe techniques for incorporating feedback from star formation and black hole accretion into simulations of isolated and merging galaxies. At present, the details of these processes cannot be resolved in simulations on galactic…

天体物理学 · 物理学 2009-11-10 Volker Springel , Tiziana Di Matteo , Lars Hernquist

We present the High-$z$ Evolution of Large and Luminous Objects (HELLO) project, a set of $\sim\!30$ high-resolution cosmological simulations aimed to study Milky Way analogues ($M_\star\sim10^{10-11}$\,\Msun) at high redshift ($z\sim…

We present a suite of 15 cosmological zoom-in simulations of isolated dark matter halos, all with masses of $M_{\rm halo} \approx 10^{10}\,{\rm M}_\odot$ at $z=0$, in order to understand the relationship between halo assembly, galaxy…

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