272 citations · 1.3k across the 38 of their papers we have counts for
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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…
Radiating Bondi and Cooling Site Flows
William G. Mathews, Fulai Guo
Steady accretion of a radiating gas onto a central mass point is described and compared to classic Bondi accretion. Radiation losses are essential for accretion flows to be observe…
Estimate of the total mechanical feedback energy from galaxy cluster-centered black holes: implications for black hole evolution, cluster gas fraction and entropy
William G. Mathews, Fulai Guo
The total feedback energy injected into hot gas in galaxy clusters by central black holes can be estimated by comparing the potential energy of observed cluster gas profiles with t…
Cosmic ray diffusion fronts in the Virgo cluster
William G. Mathews, Fulai Guo
The pair of large radio lobes in the Virgo cluster, each about 23 kpc in radius, have curiously sharp outer edges where the radio-synchrotron continuum flux declines abruptly. Howe…
Self-consistent evolution of gas and cosmic rays in Cygnus A and similar FR II classic double radio sources
William G. Mathews, Fulai Guo
In Cygnus A and other classical FR II double radio sources, powerful opposing jets from the cores of halo-centered galaxies drive out into the surrounding cluster gas, forming hots…
Cosmic Ray-Dominated AGN Jets and the Formation of X-ray Cavities in Galaxy Clusters
Fulai Guo, William G. Mathews
It is widely accepted that feedback from active galactic nuclei (AGN) plays a key role in the evolution of gas in groups and clusters of galaxies. Unequivocal evidence comes from q…
Removing Cool Cores and Central Metallicity Peaks in Galaxy Clusters with Powerful AGN Outbursts
Fulai Guo, William G. Mathews
Recent X-ray observations of galaxy clusters suggest that cluster populations are bimodally distributed according to central gas entropy and are separated into two distinct classes…
AGN Feedback and Bimodality in Cluster Core Entropy
Fulai Guo, S. Peng Oh, M. Ruszkowski
We investigate a series of steady-state models of galaxy clusters, in which the hot intracluster gas is efficiently heated by active galactic nucleus (AGN) feedback and thermal con…
Simulating X-ray Supercavities and Their Impact on Galaxy Clusters
Fulai Guo, William G. Mathews
Recent X-ray observations of hot gas in the galaxy cluster MS 0735.6+7421 reveal huge radio-bright, quasi-bipolar X-ray cavities having a total energy ~10^{62} ergs, the most energ…
Could AGN Outbursts Transform Cool Core Clusters?
Fulai Guo, S. Peng Oh
The origin of the bimodality in cluster core entropy is still unknown. At the same time, recent work has shown that thermal conduction in clusters is likely a time-variable phenome…