Theoretical challenges in galaxy formation

T Naab, JP Ostriker - Annual review of astronomy and …, 2017‏ - annualreviews.org
Numerical simulations have become a major tool for understanding galaxy formation and
evolution. Over the decades the field has made significant progress. It is now possible to …

The role of magnetic field in molecular cloud formation and evolution

P Hennebelle, S Inutsuka - Frontiers in Astronomy and Space …, 2019‏ - frontiersin.org
We review the role that magnetic field may have on the formation and evolution of molecular
clouds. After a brief presentation and main assumptions leading to ideal MHD equations …

Pressure-regulated, feedback-modulated star formation in disk galaxies

EC Ostriker, CG Kim - The Astrophysical Journal, 2022‏ - iopscience.iop.org
The star formation rate (SFR) in galactic disks depends on both the quantity of the available
interstellar medium (ISM) gas and its physical state. Conversely, the ISM's physical state …

Cloud-scale molecular gas properties in 15 nearby galaxies

J Sun, AK Leroy, A Schruba… - The Astrophysical …, 2018‏ - iopscience.iop.org
We measure the velocity dispersion, σ, and surface density, Σ, of the molecular gas in
nearby galaxies from CO spectral line cubes with spatial resolution 45–120 pc, matched to …

A unified model for galactic discs: star formation, turbulence driving, and mass transport

MR Krumholz, B Burkhart, JC Forbes… - Monthly Notices of the …, 2018‏ - academic.oup.com
We introduce a new model for the structure and evolution of the gas in galactic discs. In the
model the gas is in vertical pressure and energy balance. Star formation feedback injects …

But what about...: cosmic rays, magnetic fields, conduction, and viscosity in galaxy formation

PF Hopkins, TK Chan… - Monthly Notices of …, 2020‏ - academic.oup.com
We present and study a large suite of high-resolution cosmological zoom-in simulations,
using the FIRE-2 treatment of mechanical and radiative feedback from massive stars …

Dynamical equilibrium in the molecular ISM in 28 nearby star-forming galaxies

J Sun, AK Leroy, EC Ostriker, A Hughes… - The Astrophysical …, 2020‏ - iopscience.iop.org
We compare the observed turbulent pressure in molecular gas, P turb, to the required
pressure for the interstellar gas to stay in equilibrium in the gravitational potential of a …

Three-phase interstellar medium in galaxies resolving evolution with star formation and supernova feedback (TIGRESS): algorithms, fiducial model, and convergence

CG Kim, EC Ostriker - The Astrophysical Journal, 2017‏ - iopscience.iop.org
We introduce TIGRESS, a novel framework for multi-physics numerical simulations of the
star-forming interstellar medium (ISM) implemented in the Athena MHD code. The …

Numerical simulations of multiphase winds and fountains from star-forming galactic disks. I. Solar neighborhood TIGRESS model

CG Kim, EC Ostriker - The Astrophysical Journal, 2018‏ - iopscience.iop.org
Gas blown away from galactic disks by supernova (SN) feedback plays a key role in galaxy
evolution. We investigate outflows utilizing the solar neighborhood model of our high …

FORGE'd in FIRE: Resolving the End of Star Formation and Structure of AGN Accretion Disks from Cosmological Initial Conditions

PF Hopkins, MY Grudic, KY Su, S Wellons… - arxiv preprint arxiv …, 2023‏ - arxiv.org
It has recently become possible to zoom-in from cosmological to sub-pc scales in galaxy
simulations to follow accretion onto supermassive black holes (SMBHs). However, at some …