272 citations · 1.3k across the 38 of their papers we have counts for
16 papers · 1 filter
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…
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…
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…
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…
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…
Dynamics Inside the Radio and X-ray Cluster Cavities of Cygnus A and Similar FRII Sources
William G. Mathews, Fulai Guo
We describe approximate axisymmetric computations of the dynamical evolution of material inside radio lobes and X-ray cluster gas cavities in Fanaroff-Riley II sources such as Cygn…
The Fermi Bubbles. II. The Potential Roles of Viscosity and Cosmic Ray Diffusion in Jet Models
Fulai Guo, William G. Mathews, Gregory Dobler +1
The origin of the Fermi bubbles recently detected by the Fermi Gamma-ray Space Telescope in the inner Galaxy is mysterious. In the companion paper Guo & Mathews (Paper I), we use h…
The Fermi Bubbles. I. Possible Evidence for Recent AGN Jet Activity in the Galaxy
Fulai Guo, William G. Mathews
The Fermi Gamma-ray Space Telescope reveals two large gamma-ray bubbles in the Galaxy, which extend about 50 degrees (~ 10 kpc) above and below the Galactic center (GC) and are sym…