190 citations · 1.7k across the 35 of their papers we have counts for
34 papers
The Most Dangerous Seed: Nonlinear Optimal Perturbations in Rayleigh-Taylor Instability
Suoqing Ji, Bin Shi
Long-term instabilities in astrophysical fluids are inherently nonlinear, where even small-amplitude perturbations can trigger dramatic instability. However, owing to the complex i…
FEASTS Combined with Interferometry (I): Overall Properties of Diffuse HI and Implications for Gas Accretion in Nearby Galaxies
Jing Wang, Xuchen Lin, Dong Yang +19
We present a statistical study of the properties of diffuse HI in ten nearby galaxies, comparing the HI detected by the single-dish telescope FAST (FEASTS program) and the interfer…
Observational Evidence for Hot Wind Impact on pc-scale in Low-luminosity Active Galactic Nucleus
Fangzheng Shi, Feng Yuan, Zhiyuan Li +2
Supermassive black holes in galaxies spend majority of their lifetime in the low-luminosity regime, powered by hot accretion flow. Strong winds launched from the hot accretion flow…
On the dominant role of wind in the quasar feedback mode in the late stage evolution of massive elliptical galaxies
Bocheng Zhu, Feng Yuan, Suoqing Ji +2
In this paper we investigate the role of AGN feedback on the late stage evolution of elliptical galaxies by performing high-resolution hydrodynamical simulation in the {\it MACER}…
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…
Active galactic nuclei feedback in an elliptical galaxy (III): the impacts and fate of cosmological inflow
Bocheng Zhu, Feng Yuan, Suoqing Ji +4
The cosmological inflow of a galaxy is speculated to be able to enter the galaxy and enhance the star formation rate (SFR) and black hole accretion rate (BHAR). In this paper, by p…
A Simple Sub-Grid Model For Cosmic Ray Effects on Galactic Scales
Philip F. Hopkins, Iryna S. Butsky, Suoqing Ji +1
Many recent numerical studies have argued that cosmic rays (CRs) from supernovae (SNe) or active galactic nuclei (AGN) could play a crucial role in galaxy formation, in particular…
Constraining Cosmic-ray Transport with Observations of the Circumgalactic Medium
Iryna S. Butsky, Shreya Nakum, Sam B. Ponnada +3
Recent theoretical studies predict that the circumgalactic medium (CGM) around low-redshift, galaxies could have substantial nonthermal pressure support in the form of c…
Magnetohydrodynamic Simulations of the Tayler Instability in Rotating Stellar Interiors
Suoqing Ji, Jim Fuller, Daniel Lecoanet
The Tayler instability is an important but poorly studied magnetohydrodynamic instability that likely operates in stellar interiors. The nonlinear saturation of the Tayler instabil…
Magnetic Fields on FIRE: Comparing B-fields in the multiphase ISM and CGM of Simulated L Galaxies to Observations
Sam B. Ponnada, Georgia V. Panopoulou, Iryna S. Butsky +7
The physics of magnetic fields () and cosmic rays (CRs) have recently been included in simulations of galaxy formation. However, significant uncertainties remain in how…
Radiative turbulent mixing layers at high Mach numbers
Yanhui Yang, Suoqing Ji
Radiative turbulent mixing layers (TMLs) are ubiquitous in astrophysical environments, e.g., the circumgalactic medium (CGM), and are triggered by the shear velocity at interfaces…
Standard Self-Confinement and Extrinsic Turbulence Models for Cosmic Ray Transport are Fundamentally Incompatible with Observations
Philip F. Hopkins, Jonathan Squire, Iryna S. Butsky +1
Models for cosmic ray (CR) dynamics fundamentally depend on the rate of CR scattering from magnetic fluctuations. In the ISM, for CRs with energies ~MeV-TeV, these fluctuations are…
Numerical Study of Cosmic Ray Confinement through Dust Resonant Drag Instabilities
Suoqing Ji, Jonathan Squire, Philip F. Hopkins
We investigate the possibility of cosmic ray (CR) confinement by charged dust grains through resonant drag instabilities (RDIs). We perform magnetohydrodynamic particle-in-cell sim…
A Reduced-Speed-of-Light Formulation of the Magnetohydrodynamic-Particle-in-Cell Method
Suoqing Ji, Philip F. Hopkins
A reduced-speed-of-light (RSOL) approximation is a useful technique for magnetohydrodynamic (MHD)-particle-in-cell (PIC) simulations. With a RSOL, some "in-code" speed-of-light $\t…
The impact of cosmic rays on dynamical balance and disk-halo interaction in Lstar disk galaxies
T. K. Chan, Dusan Keres, Alexander B. Gurvich +4
Cosmic rays (CRs) are an important component in the interstellar medium (ISM), but their effect on the dynamics of the disk-halo interface (< 10 kpc from the disk) is still unclear…
First Predicted Cosmic Ray Spectra, Primary-to-Secondary Ratios, and Ionization Rates from MHD Galaxy Formation Simulations
Philip F. Hopkins, Iryna S. Butsky, Georgia V. Panopoulou +4
We present the first simulations evolving resolved spectra of cosmic rays (CRs) from MeV-TeV energies (including electrons, positrons, (anti)protons, and heavier nuclei), in live k…
Survival and mass growth of cold gas in a turbulent, multiphase medium
Max Gronke, S. Peng Oh, Suoqing Ji +1
Astrophysical gases are commonly multiphase and highly turbulent. In this work, we investigate the survival and growth of cold gas in such a turbulent, multi-phase medium using thr…
Virial shocks are suppressed in cosmic ray-dominated galaxy halos
Suoqing Ji, Dušan Kereš, T. K. Chan +5
We study the impact of cosmic rays (CRs) on the structure of virial shocks, using a large suite of high-resolution cosmological FIRE-2 simulations accounting for CR injection by su…
Effects of Different Cosmic Ray Transport Models on Galaxy Formation
Philip F. Hopkins, T. K. Chan, Jonathan Squire +4
Cosmic rays (CRs) with ~GeV energies can contribute significantly to the energy and pressure budget in the interstellar, circumgalactic, and intergalactic medium (ISM, CGM, IGM). R…
Project AMIGA: The Circumgalactic Medium of Andromeda
Nicolas Lehner, Samantha C. Berek, J. Christopher Howk +22
Project AMIGA (Absorption Maps In the Gas of Andromeda) is a large ultraviolet Hubble Space Telescope program, which has assembled a sample of 43 QSOs that pierce the circumgalacti…
Testing Physical Models for Cosmic Ray Transport Coefficients on Galactic Scales: Self-Confinement and Extrinsic Turbulence at GeV Energies
Philip F. Hopkins, Jonathan Squire, T. K. Chan +4
The microphysics of ~GeV cosmic ray (CR) transport on galactic scales remain deeply uncertain, with almost all studies adopting simple prescriptions (e.g. constant-diffusivity). We…
Cosmic-Ray Driven Outflows to Mpc Scales from Galaxies
Philip F. Hopkins, T. K. Chan, Suoqing Ji +4
We study the effects of cosmic rays (CRs) on outflows from star-forming galaxies in the circum and inter-galactic medium (CGM/IGM), in high-resolution, fully-cosmological FIRE-2 si…
Properties of the Circumgalactic Medium in Cosmic Ray-Dominated Galaxy Halos
Suoqing Ji, T. K. Chan, Cameron B. Hummels +6
We investigate the impact of cosmic rays (CRs) on the circumgalactic medium (CGM) in FIRE-2 simulations, for ultra-faint dwarf through Milky Way (MW)-mass halos hosting star-formin…
On the formation of density filaments in the turbulent interstellar medium
Siyao Xu, Suoqing Ji, A. Lazarian
This study is motivated by recent observations on ubiquitous interstellar density filaments and guided by modern theories of compressible magnetohydrodynamic (MHD) turbulence. The…