149 citations · 423 across the 15 of their papers we have counts for
16 papers
XMAGNET -- Stir before serving: a Lagrangian perspective on mixing-driven condensation in the intracluster medium
M. Fournier, P. Grete, M. Brüggen +4
We aim to characterize the thermodynamic and dynamical conditions leading to condensation in cluster cores, and to assess the role of magnetic fields. We implement a Monte-Carlo tr…
XMAGNET : Kinetic, Thermal and Magnetic AGN Feedback in Massive Galaxies at Halo Masses M
Deovrat Prasad, Philipp Grete, Brian O'Shea +5
The interplay between radiative cooling of the circumgalactic medium (CGM) and feedback heating governs the evolution of the universe's most massive galaxies. This paper presents s…
XMAGNET: Velocity structure functions of active galactic nucleus-driven turbulence in the multiphase intracluster medium
M. Fournier, P. Grete, M. Brüggen +5
Significant theoretical and observational efforts are underway to investigate the properties of turbulence in the hot plasma that pervades galaxy clusters. Spectroscopy has been us…
The XMAGNET exascale MHD simulations of SMBH feedback in galaxy groups and clusters: Overview and preliminary cluster results
Philipp Grete, Brian W. O'Shea, Forrest W. Glines +5
We present initial results from extremely well-resolved 3D magnetohydrodynamical simulations of idealized galaxy clusters, conducted using the AthenaPK code on the Frontier exascal…
The Case for Hot-Mode Accretion in Abell 2029
Deovrat Prasad, G. Mark Voit, Brian W. O'Shea
Radiative cooling and AGN heating are thought to form a feedback loop that regulates the evolution of low redshift cool-core galaxy clusters. Numerical simulations suggest that for…
Atmospheric Circulation in Simulations of the AGN-CGM Connection at Halo Masses
Deovrat Prasad, G. Mark Voit, Brian W. O'Shea
Coupling between active galactic nuclei (AGN) and the circumgalactic medium (CGM) is critical to the interplay between radiative cooling and feedback heating in the atmospheres of…
Environmental Dependence of Self-Regulating Black-hole Feedback in Massive Galaxies
Deovrat Prasad, G. Mark Voit, Brian W. O'shea +1
In the universe's most massive galaxies, kinetic feedback from a central supermassive black hole appears to limit star formation. Abundant circumstantial evidence suggests that acc…
A Black-Hole Feedback Valve in Massive Galaxies
G. M. Voit, G. L. Bryan, D. Prasad +6
Star formation in the universe's most massive galaxies proceeds furiously early in time but then nearly ceases. Plenty of hot gas remains available but does not cool and condense i…
Figuring Out Gas & Galaxies In Enzo (FOGGIE). IV. The Stochasticity of Ram Pressure Stripping in Galactic Halos
Raymond C. Simons, Molly S. Peeples, Jason Tumlinson +9
We study ram pressure stripping in simulated Milky Way-like halos at z>=2 from the Figuring Out Gas & Galaxies In Enzo (FOGGIE) project. These simulations reach exquisite resolutio…
Cool-Core Cycles and Phoenix
Deovrat Prasad, Prateek Sharma, Arif Babul +2
Recent observations show that the star formation rate (SFR) in the {\it Phoenix} cluster's central galaxy is M yr. Even though {\it Phoenix} is a massive…
Circumgalactic Gas and the Precipitation Limit
G. M. Voit, A. Babul, Iu. Babyk +15
During the last decade, numerous and varied observations, along with increasingly sophisticated numerical simulations, have awakened astronomers to the central role the circumgalac…
Cool-Core Clusters : Role of BCG, Star Formation & AGN-Driven Turbulence
Deovrat Prasad, Prateek Sharma, Arif Babul
Recent analysis shows that it is important to explicitly include the gravitational potential of the central brightest central galaxy (BCG) to infer the acceleration due to gravity…
Scalable explicit implementation of anisotropic diffusion with Runge-Kutta-Legendre super-time-stepping
Bhargav Vaidya, Deovrat Prasad, Andrea Mignone +2
An important ingredient in numerical modelling of high temperature magnetised astrophysical plasmas is the anisotropic transport of heat along magnetic field lines from higher to l…
AGN jet-driven stochastic cold accretion in cluster cores
Deovrat Prasad, Prateek Sharma, Arif Babul
Several arguments suggest that stochastic condensation of cold gas and its accretion onto the central supermassive black hole (SMBH) is essential for active galactic nuclei (AGN) f…
Cool core cycles: Cold gas and AGN jet feedback in cluster cores
Deovrat Prasad, Prateek Sharma, Arif Babul
Using high-resolution 3-D and 2-D (axisymmetric) hydrodynamic simulations in spherical geometry, we study the evolution of cool cluster cores heated by feedback-driven bipolar acti…
Spitzer IRS mapping of the central kpc of Centaurus A
Alice C. Quillen, Joss Bland-Hawthorn, Joel Green +6
We report on the results of infrared spectroscopic mapping observations carried out in the nuclear region of Centaurus A (NGC5128). The 500 pc bipolar dust shell discovered by Quil…