Cooling flow
View article: Modeling Cosmic Rays at AGN Jet-Driven Shock Fronts
Modeling Cosmic Rays at AGN Jet-Driven Shock Fronts Open
Feedback from Active Galactic Nuclei (AGN) is a key physical mechanism proposed to regulate galaxy formation and suppress star formation, primarily in massive galaxies. Cosmic rays (CRs) associated with AGN jets can efficiently suppress co…
View article: A search for cold molecular outflows in cosmic noon galaxies
A search for cold molecular outflows in cosmic noon galaxies Open
The flow of baryons in and out of galaxies is the primary driver for galaxy evolution. In addition to depleting the gas reservoir of galaxies, outflows also enrich their circumgalactic medium (CGM) with processed gas -- which can further i…
View article: A search for cold molecular outflows in cosmic noon galaxies
A search for cold molecular outflows in cosmic noon galaxies Open
The flow of baryons in and out of galaxies is the primary driver for galaxy evolution. In addition to depleting the gas reservoir of galaxies, outflows also enrich their circumgalactic medium (CGM) with processed gas -- which can further i…
View article: Simple relations from complex outflows: How the $M-σ$ relation emerges in a multi-phase environment
Simple relations from complex outflows: How the $M-σ$ relation emerges in a multi-phase environment Open
The tight empirical $M-σ$ relation between the mass of a SMBH) and the velocity dispersion of the host galaxy bulge is often interpreted as the result of self-regulation by AGN feedback. This picture is motivated by analytical and semi-ana…
View article: Simple relations from complex outflows: How the $M-σ$ relation emerges in a multi-phase environment
Simple relations from complex outflows: How the $M-σ$ relation emerges in a multi-phase environment Open
The tight empirical $M-σ$ relation between the mass of a SMBH) and the velocity dispersion of the host galaxy bulge is often interpreted as the result of self-regulation by AGN feedback. This picture is motivated by analytical and semi-ana…
View article: The relationship between warm and hot gas-phase metallicity in massive elliptical galaxies and the influence of AGN feedback
The relationship between warm and hot gas-phase metallicity in massive elliptical galaxies and the influence of AGN feedback Open
Warm ionized gas is ubiquitous at the centers of X-ray bright elliptical galaxies. While it is believed to play a key role in the feeding and feedback processes of supermassive black holes, its origins remain under debate. Existing studies…
View article: The relationship between warm and hot gas-phase metallicity in massive elliptical galaxies and the influence of AGN feedback
The relationship between warm and hot gas-phase metallicity in massive elliptical galaxies and the influence of AGN feedback Open
Warm ionized gas is ubiquitous at the centers of X-ray bright elliptical galaxies. While it is believed to play a key role in the feeding and feedback processes of supermassive black holes, its origins remain under debate. Existing studies…
View article: Enhanced Gas-phase Metallicities and Suppressed Outflows for Galaxies in a Rich Cluster Core at Cosmic Noon
Enhanced Gas-phase Metallicities and Suppressed Outflows for Galaxies in a Rich Cluster Core at Cosmic Noon Open
We present the results of near-infrared spectroscopy using Keck/MOSFIRE for 23 member galaxies in the X-ray cluster XCS 2215 ( z = 1.46) to investigate the environmental dependence of gaseous flows and metallicities. We find that the metal…
View article: A Novel Parameterization for Rapid Cooling in Supernova Remnants, with applications to the Pa 30 nebula
A Novel Parameterization for Rapid Cooling in Supernova Remnants, with applications to the Pa 30 nebula Open
We systematically study how cooling creates structural changes in supernova remnants as they evolve. Inspired by the peculiar morphology of the Pa 30 nebula, we adopt a framework in which to characterize supernova remnants under different …
View article: A Novel Parameterization for Rapid Cooling in Supernova Remnants, with applications to the Pa 30 nebula
A Novel Parameterization for Rapid Cooling in Supernova Remnants, with applications to the Pa 30 nebula Open
We systematically study how cooling creates structural changes in supernova remnants as they evolve. Inspired by the peculiar morphology of the Pa 30 nebula, we adopt a framework in which to characterize supernova remnants under different …
View article: Radio AGN feedback sustains quiescence only in a minority of massive galaxies
Radio AGN feedback sustains quiescence only in a minority of massive galaxies Open
Radio active galactic nuclei (AGNs) eject a huge amount of energy into the surrounding medium and are thought to potentially prevent gas cooling and maintain the quiescence of massive galaxies. The short-lived, sporadic, and anisotropic na…
View article: Radio AGN feedback sustains quiescence only in a minority of massive galaxies
Radio AGN feedback sustains quiescence only in a minority of massive galaxies Open
Radio active galactic nuclei (AGNs) eject a huge amount of energy into the surrounding medium and are thought to potentially prevent gas cooling and maintain the quiescence of massive galaxies. The short-lived, sporadic, and anisotropic na…
View article: Solving the cooling flow problem with combined jet-wind AGN feedback
Solving the cooling flow problem with combined jet-wind AGN feedback Open
Active galactic nucleus (AGN) feedback is widely viewed as the most promising solution to the long-standing cooling flow problem in galaxy clusters, yet previous models prescribe jet properties inconsistent with accretion physics. We perfo…
View article: Solving the cooling flow problem with combined jet-wind AGN feedback
Solving the cooling flow problem with combined jet-wind AGN feedback Open
Active galactic nucleus (AGN) feedback is widely viewed as the most promising solution to the long-standing cooling flow problem in galaxy clusters, yet previous models prescribe jet properties inconsistent with accretion physics. We perfo…
View article: Star Formation Histories and Stellar Dynamics in the Central Galaxies of RX J0820.9+0752, A1835, and PKS 0745-191
Star Formation Histories and Stellar Dynamics in the Central Galaxies of RX J0820.9+0752, A1835, and PKS 0745-191 Open
We present Keck Cosmic Web Imager observations of stellar populations in three galaxies at the centers of cooling flow clusters. All three host rich molecular gas reservoirs and show prominent Balmer absorption from $30-100$ Myr-old stars …
View article: Star Formation Histories and Stellar Dynamics in the Central Galaxies of RX J0820.9+0752, A1835, and PKS 0745-191
Star Formation Histories and Stellar Dynamics in the Central Galaxies of RX J0820.9+0752, A1835, and PKS 0745-191 Open
We present Keck Cosmic Web Imager observations of stellar populations in three galaxies at the centers of cooling flow clusters. All three host rich molecular gas reservoirs and show prominent Balmer absorption from $30-100$ Myr-old stars …
View article: JVLA and VLBA Study of the Merging Cool Core CHIPS 1911+4455 at <i>z</i> ∼ 0.5 Radio Emission from an Infant Active Galactic Nucleus and from a Rapidly Star-forming Brightest Cluster Galaxy
JVLA and VLBA Study of the Merging Cool Core CHIPS 1911+4455 at <i>z</i> ∼ 0.5 Radio Emission from an Infant Active Galactic Nucleus and from a Rapidly Star-forming Brightest Cluster Galaxy Open
Recent studies of galaxy clusters found peculiar cases at the boundary between noncool core and cool core systems. While unusual, these objects can help us understand the evolution of the most massive clusters. We investigated the role of …
View article: The Type Ia Supernova and Asymptotic Giant Branch Stellar Ejecta-regulated Interstellar Medium of Massive Galaxies
The Type Ia Supernova and Asymptotic Giant Branch Stellar Ejecta-regulated Interstellar Medium of Massive Galaxies Open
Observations and theory suggest that Type Ia supernovae (SNIa) heating and mass loss from asymptotic giant branch (AGB) stars play a crucial role in the interstellar medium (ISM) of massive galaxies. We perform 3D hydrodynamic simulations …
View article: Study on non-intrusive monitoring method of flow rate distribution within parallel cooling channels based on GAN-like model
Study on non-intrusive monitoring method of flow rate distribution within parallel cooling channels based on GAN-like model Open
The prediction of flow distribution in regenerative cooling channels of scramjet can provide valuable reference information for flow regulation. The non-intrusive monitoring method based on deep learning is a promising approach. In this wo…
View article: Revisiting Dimensionless Parameters Quantifying Film Cooling
Revisiting Dimensionless Parameters Quantifying Film Cooling Open
The adiabatic effectiveness of film cooling (η) has been characterized by the density (DRh) and blowing (BRh) ratios. In this study, dimensional analysis and computations based on Reynolds-averaged Navier–Stokes (RANS) were performed to id…
View article: The bulk motion of gas in the core of the Centaurus galaxy cluster
The bulk motion of gas in the core of the Centaurus galaxy cluster Open
View article: Directly imaging the cooling flow in the Phoenix cluster
Directly imaging the cooling flow in the Phoenix cluster Open
View article: XRISM Observations of the Cooling Flow Cluster A2029 Support Heating by Mixing
XRISM Observations of the Cooling Flow Cluster A2029 Support Heating by Mixing Open
I argue that the mixing-heating mechanism of the intracluster medium (ICM) is compatible with the new observations by the X-ray telescope XRISM that show the dispersion velocity in the cooling flow cluster of galaxies A2029 to be σ v = 169…
View article: XRISM observations of the cooling flow cluster A2029 support heating by mixing
XRISM observations of the cooling flow cluster A2029 support heating by mixing Open
I argue that the mixing-heating mechanism of the intracluster medium (ICM) is compatible with the new observations by the X-ray telescope XRISM that show the dispersion velocity in the cooling flow cluster of galaxies A2029 to be 169 km/s.…
View article: An Hα–X-ray surface-brightness correlation for filaments in cooling-flow clusters
An Hα–X-ray surface-brightness correlation for filaments in cooling-flow clusters Open
View article: Cooling rate and turbulence in the intracluster medium of the cool-core cluster Abell 2667
Cooling rate and turbulence in the intracluster medium of the cool-core cluster Abell 2667 Open
Context. We present a detailed analysis of the thermal X-ray emission from the intracluster medium in the cool-core galaxy cluster Abell 2667 at z = 0.23. Aims. Our main goal is to detect low-temperature (< 2 keV) X-ray emitting gas associ…
View article: MusE GAs FLOw and Wind (MEGAFLOW)
MusE GAs FLOw and Wind (MEGAFLOW) Open
Aims. The circumgalactic medium (CGM) is a key component in understanding the physical processes governing the flows of gas around galaxies. Quantifying its evolution and its dependence on galaxy properties is particularly important for ou…
View article: H$α$-X-ray Surface Brightness Correlation for Filaments in Cooling Flow Clusters
H$α$-X-ray Surface Brightness Correlation for Filaments in Cooling Flow Clusters Open
Massive galaxies in cooling flow clusters display clear evidence of feedback from Active Galactic Nuclei (AGN). Joint X-ray and radio observations have shown that AGN radio jets push aside the surrounding hot gas and form cavities in the h…
View article: Rotational Flow and Heat Transfer in a Serpentine Cooling Channel with Realistic Internal Cooling Schemes of a Turbine Blade
Rotational Flow and Heat Transfer in a Serpentine Cooling Channel with Realistic Internal Cooling Schemes of a Turbine Blade Open
View article: In-Hole Measurements of Flow Inside Fan-Shaped Film Cooling Holes and Downstream Effects
In-Hole Measurements of Flow Inside Fan-Shaped Film Cooling Holes and Downstream Effects Open
The study of low-speed jets into crossflow is critical to the performance of gas turbines. Film cooling is a method to maintain manageable blade temperatures in turbine sections while increasing turbine inlet temperatures and turbine effic…