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We use 1 kpc resolution cosmological AMR simulations of a Virgo-like galaxy cluster to investigate the effect of feedback from supermassive black holes (SMBH) on the mass distribution of dark matter, gas and stars. We compared three…

宇宙学与河外天体物理 · 物理学 2015-05-18 Romain Teyssier , Ben Moore , Davide Martizzi , Yohan Dubois , Lucio Mayer

Our understanding of how AGN feedback operates in galaxy clusters has improved in recent years owing to large efforts in multi-wavelength observations and hydrodynamical simulations. However, it is much less clear how feedback operates in…

Understanding the scaling relation between baryonic observables and dark matter halo properties is crucial not only for studying galaxy formation and evolution, but also for deriving accurate cosmological constraints from galaxy surveys. In…

星系天体物理 · 物理学 2025-09-09 Shun-Sheng Li , Henk Hoekstra , Konrad Kuijken , Matthieu Schaller , Joop Schaye

Galaxy clusters are valuable cosmological probes. However, cluster mass estimates rely on observable quantities that are affected by complicated baryonic physics in the intracluster medium (ICM), including feedback from active galactic…

宇宙学与河外天体物理 · 物理学 2015-05-14 H. -Y. Yang , P. M. Ricker , P. M. Sutter

We study the effect of Active Nuclei Galaxy (AGN) feedback as one of the major mechanisms modifying the cluster morphology influencing scaling relations, which are the most uncertain factor in constraining cosmology with clusters of…

宇宙学与河外天体物理 · 物理学 2016-07-27 Gayoung Chon , Ewald Puchwein , Hans Boehringer

To investigate the effect of feedback from active galactic nuclei (AGN) on their surrounding medium, we study the diffuse X-ray emission from galaxy groups and clusters by coupling the Astrophysical Plasma Emission Code (APEC) with the…

We use numerical simulations to investigate, for the first time, the joint effect of feedback from supernovae (SNe) and active galactic nuclei (AGN) on the evolution of galaxy cluster X-ray scaling relations. Our simulations are drawn from…

宇宙学与河外天体物理 · 物理学 2015-05-18 C. J. Short , P. A. Thomas , O. E. Young , F. R. Pearce , A. Jenkins , O. Muanwong

Cosmological constraints derived from galaxy clusters rely on accurate predictions of cluster observable properties, in which feedback from active galactic nuclei (AGN) is a critical component. In order to model the physical effects due to…

宇宙学与河外天体物理 · 物理学 2015-06-05 H. -Y. K. Yang , P. M. Sutter , P. M. Ricker

The baryonic physics shaping galaxy formation and evolution are complex, spanning a vast range of scales and making them challenging to model. Cosmological simulations rely on subgrid models that produce significantly different predictions.…

We present measurements of the spatial mapping between (hot) baryons and the total matter in the Universe, via the cross-correlation between the thermal Sunyaev-Zeldovich (tSZ) map from Planck and the weak gravitational lensing maps from…

The thermal Sunyaev-Zel'dovich (SZ) effect and soft X-ray emission are routinely observed around massive galaxies and in galaxy groups and clusters. We study these observational diagnostics of galaxy haloes for a suite of cosmological…

We study the properties of simulated high-redshift galaxies using cosmological N-body/gasdynamical runs from the OverWhelmingly Large Simulations (OWLS) project. The runs contrast several feedback implementations of varying effectiveness:…

宇宙学与河外天体物理 · 物理学 2011-06-29 Laura V. Sales , Julio F. Navarro , Joop Schaye , Claudio Dalla Vecchia , Volker Springel , C. M. Booth

We investigate the Missing Baryon problem using Fast Radio Bursts (FRBs) to trace cosmic baryons. Our CROCODILE simulations, performed with the GADGET3/4-OSAKA smoothed particle hydrodynamics code, include star formation, supernova (SN) and…

宇宙学与河外天体物理 · 物理学 2026-03-10 Zhao Joseph Zhang , Kentaro Nagamine , Yuri Oku , Khee-Gan Lee , Keita Fukushima , Kazuki Tomaru , Bing Zhang , Isabel Medlock , Daisuke Nagai

The clustering of matter, as measured by the matter power spectrum, informs us about dark matter and cosmology, as well as baryonic effects on the distribution of matter in the universe. Using cosmological hydrodynamical simulations from…

宇宙学与河外天体物理 · 物理学 2023-09-14 M. L. van Loon , Marcel P. van Daalen

We conduct a cross-correlation analysis between large-scale structures traced by the Two Micron All Sky Survey (2MASS) galaxy catalog and the cosmic dispersion measures of 133 localized fast radio bursts (FRBs). The cross-correlation signal…

宇宙学与河外天体物理 · 物理学 2026-01-30 Masato Shirasaki , Ryuichi Takahashi , Ken Osato , Kunihito Ioka

We study the scaling relations between the baryonic content and total mass of groups of galaxies, as these systems provide a unique way to examine the role of non-gravitational processes in structure formation. Using Planck and ROSAT data,…

Feedback from Active Galactic Nuclei (AGN) is a key process in the evolution of massive halos in the Universe. New observational information on feedback is crucial for improving the implementation of the physics in numerical models. In this…

星系天体物理 · 物理学 2025-06-30 Hannah McCall , Irina Zhuravleva , Eugene Churazov , Congyao Zhang , William Forman , Christine Jones , Yuan Li

We analyse cosmological hydrodynamical simulations of galaxy clusters to study the X-ray scaling relations between total masses and observable quantities such as X-ray luminosity, gas mass, X-ray temperature, and $Y_{X}$. Three sets of…

Baryonic processes such as radiative cooling and feedback from massive stars and active galactic nuclei (AGN) directly redistribute baryons in the Universe but also indirectly redistribute dark matter due to changes in the gravitational…