272 citations · 1.3k across the 38 of their papers we have counts for
38 papers
Cold Filaments Formed in Hot Wake Flows Uplifted by Active Galactic Nucleus Bubbles in Galaxy Clusters
Xiaodong Duan, Fulai Guo
Multi-wavelength observations indicate that the intracluster medium in some galaxy clusters contains cold filaments, while their formation mechanism remains debated. Using hydrodyn…
Optimization of performance of the KM2A full array using the Crab Nebula
LHAASO collaboration
The full array of the Large High Altitude Air Shower Observatory (LHAASO) has been in operation since July 2021. For its kilometer-square array (KM2A), we have optimized the select…
Scientific Objectives of the Hot Universe Baryon Surveyor (HUBS) Mission
Joel Bregman, Renyue Cen, Yang Chen +51
The Hot Universe Baryon Surveyor (HUBS) is a proposed space-based X-ray telescope for detecting X-ray emissions from the hot gas content in our universe. With its unprecedented spa…
The detections of inflowing gas from narrow absorption lines at the parsec scale
Zhi-Fu Chen, Minfeng Gu, Zhicheng He +4
Inflows at the dusty torus and smaller scales is crucial to investigate the process of supermassive black hole accretion. However, only few cases of inflowing gas at small scales h…
Probing the Halo Gas Distribution in the Inner Galaxy with Fermi Bubble Observations
Ruiyu Zhang, Fulai Guo
The hot halo gas distribution in the inner Milky Way (MW) contains key fossil records of the past energetic feedback processes in the Galactic center. Here we adopt a variety of sp…
HUBS: A dedicated hot circumgalactic medium explorer
Wei Cui
The Hot Universe Baryon Surveyor (HUBS) mission is proposed to study "missing" baryons in the universe. Unlike dark matter, baryonic matter is made of elements in the periodic tabl…
Years Delayed X-ray Afterglows of TDEs Originated from Wind-Torus Interactions
Guobin Mou, Liming Dou, Ning Jiang +8
Tidal disruption events (TDEs) occurred in active galactic nuclei (AGNs) are a special class of sources with outstanding scientific significance. TDEs can generate ultrafast winds,…
Probing the Physics of Mechanical AGN Feedback with Radial Elongations of X-ray Cavities
Fulai Guo
Mechanical active galactic nucleus (AGN) feedback plays a key role in massive galaxies, galaxy groups and clusters. However, the energy content of AGN jets that mediate this feedba…
Constraining the Milky Way Mass with Its Hot Gaseous Halo
Fulai Guo, Ruiyu Zhang, Xiang-Er Fang
We propose a novel method to constrain the Milky Way (MW) mass with its corona temperature observations. For a given corona density profile, one can derive its temper…
On the Energy Coupling Efficiency of AGN Outbursts in Galaxy Clusters
Xiaodong Duan, Fulai Guo
Active galactic nucleus (AGN) jets are believed to be important in solving the cooling flow problem in the intracluster medium (ICM), while the detailed mechanism is still in debat…
Simulating the Fermi Bubbles as Forward Shocks Driven by AGN Jets
Ruiyu Zhang, Fulai Guo
The Fermi bubbles are two giant bubbles in gamma rays lying above and below the Galactic center (GC). Despite numerous studies on the bubbles, their origin and emission mechanism r…
On the Cooling Flow Problem in the Gaseous Halo of the Milky Way
Xiang-Er Fang, Fulai Guo, Ye-Fei Yuan
Theoretical and observational arguments suggest that there is a large amount of hot ( K), diffuse gas residing in the Milky Way's halo, while its total mass and spatial…
Numerical study of active galactic nucleus feedback in an elliptical galaxy with {\it MACER}
Feng Yuan, Jeremiah P. Ostriker, DooSoo Yoon +5
This paper summarizes our recent works of studying AGN feedback in an isolated elliptical galaxy by performing high-resolution hydrodynamical numerical simulations. Bondi radius is…
Metal-rich trailing outflows uplifted by AGN bubbles in galaxy clusters
Xiaodong Duan, Fulai Guo
Recent Chandra X-ray observations of many galaxy clusters find evidence for hot metal-rich outflows preferentially aligned with the large-scale axes of X-ray cavities with typical…
On the Efficiency of Thermal Conduction in Galaxy Clusters
Xiang-Er Fang, Fulai Guo, Ye-Fei Yuan +1
Galaxy clusters host a large reservoir of diffuse plasma with radially-varying temperature profiles. The efficiency of thermal conduction in the intracluster medium (ICM) is compli…
Active Galactic Nuclei Feedback in an Elliptical Galaxy with the Most Updated AGN Physics (I): Low-angular Momentum Case
Feng Yuan, Doosoo Yoon, Ya-Ping Li +3
We investigate the effects of AGN feedback on the cosmological evolution of an isolated elliptical galaxy by performing two-dimensional high-resolution hydrodynamical numerical sim…
The peculiar filamentary HI structure of NGC 6145
Enci Wang, Jing Wang, Xu Kong +5
In this paper, we report the peculiar HI morphology of the cluster spiral galaxy NGC 6145, which has a 150 kpc HI filament on one side that is nearly parallel to its major axis. Th…
Reversing cooling flows with AGN jets: shock waves, rarefaction waves, and trailing outflows
Fulai Guo, Xiaodong Duan, Ye-Fei Yuan
The cooling flow problem is one of the central problems in galaxy clusters, and active galactic nucleus (AGN) feedback is considered to play a key role in offsetting cooling. Howev…
The AGN Jet Model of the Fermi Bubbles
Fulai Guo
The nature and origin of the Fermi bubbles detected in the inner Galaxy remain elusive. In this paper, we briefly discuss some recent theoretical and observational developments, wi…
On the Importance of Very-light Internally-subsonic AGN Jets in Radio-mode AGN Feedback
Fulai Guo
Radio-mode AGN feedback plays a key role in the evolution of galaxy groups and clusters. Its physical origin lies in the kpc-scale interaction of AGN jets with the intracluster med…
The Shape of X-ray Cavities in Galaxy Clusters: Probing Jet Properties and Viscosity
Fulai Guo
X-ray observations of galaxy clusters have detected numerous X-ray cavities, evolved from the interaction of AGN jets with the intracluster medium (ICM) and providing compelling ev…
Connecting Star Formation Quenching with Galaxy Structure and Supermassive Black Holes through Gravitational Heating of Cooling Flows
Fulai Guo
Recent observations suggested that star formation quenching in galaxies is related to galaxy structure. Here we propose a new mechanism to explain the physical origin of this corre…
Hot versus Cold: the Dichotomy in Spherical Accretion of Cooling Flows onto Supermassive Black Holes in Elliptical Galaxies, Galaxy Groups and Clusters
Fulai Guo, William G. Mathews
Feedback heating from active galactic nuclei (AGNs) has been commonly invoked to suppress cooling flows predicted in hot gas in elliptical galaxies, galaxy groups and clusters. Pre…
Cosmic Ray Streaming in Clusters of Galaxies
Joshua Wiener, S Peng Oh, Fulai Guo
The observed bimodality in radio luminosity in galaxy clusters is puzzling. We investigate the possibility that cosmic-ray (CR) streaming in the intra-cluster medium can 'switch of…