A5008589829- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Astrophysics and Star Formation Studies
- Astrophysical Phenomena and Observations
- Cosmology and Gravitation Theories
- Computational Physics and Python Applications
- Stellar, planetary, and galactic studies
- Gamma-ray bursts and supernovae
- Astrophysics and Cosmic Phenomena
- Radio Astronomy Observations and Technology
- Dark Matter and Cosmic Phenomena
- Pulsars and Gravitational Waves Research
- Adaptive optics and wavefront sensing
- Gaussian Processes and Bayesian Inference
- Data Visualization and Analytics
- Particle physics theoretical and experimental studies
- Scientific Research and Discoveries
- Relativity and Gravitational Theory
- CCD and CMOS Imaging Sensors
- Data Analysis with R
- Advanced Combustion Engine Technologies
- Geophysics and Gravity Measurements
- Particle Accelerators and Free-Electron Lasers
- Black Holes and Theoretical Physics
- Meteorological Phenomena and Simulations
Flatiron Institute
2019-2025
Flatiron Health (United States)
2019-2025
University of Connecticut
2019-2025
Universidad Cristiana Autónoma de Nicaragua
2021-2023
Northwestern University
2015-2018
University of Arizona
2009-2015
University of Puerto Rico at Río Piedras
2009
The Feedback In Realistic Environments (FIRE) project explores feedback in cosmological galaxy formation simulations. Previous FIRE simulations used an identical source code (FIRE-1) for consistency. Motivated by the development of more accurate numerics - including hydrodynamic solvers, gravitational softening, and supernova coupling algorithms exploration new physics (e.g. magnetic fields), we introduce FIRE-2, updated numerical implementation GIZMO code. We run a suite compare against...
We introduce the simba simulations, next generation of mufasa cosmological galaxy formation simulations run with gizmo's meshless finite mass hydrodynamics. includes updates to mufasa's sub-resolution star and feedback prescriptions, introduces black hole growth via torque-limited accretion model Anglés-Alcázar et al. from cold gas Bondi hot gas, along kinetic bipolar outflows X-ray energy. Ejection velocities are taken be |${\sim } 10^3\,\,{\rm km}\, {\rm s}^{-1}$| at high Eddington ratios,...
We use cosmological simulations from the FIRE (Feedback In Realistic Environments) project to study baryon cycle and galaxy mass assembly for central galaxies in halo range $M_{\rm halo} \sim 10^{10} - 10^{13} M_{\odot}$. By tracing cosmic inflows, galactic outflows, gas recycling, merger histories, we quantify contribution of physically distinct sources material growth. show that situ star formation fueled by fresh accretion dominates early growth all masses, while re-accretion previously...
Abstract We introduce massive black holes (BHs) in the Feedback In Realistic Environments (FIRE) project and perform high-resolution cosmological hydrodynamic simulations of quasar-mass haloes [Mhalo(z = 2) ≈ 1012.5 M⊙] down to z 1. These model stellar feedback by supernovae, winds radiation, BH growth using a gravitational torque-based prescription tied resolved properties galactic nuclei. do not include feedback. show that early occurs through short (≲1 Myr) accretion episodes can reach or...
We investigate black hole-host galaxy scaling relations in cosmological simulations with a self-consistent hole growth and feedback model. The sub-grid accretion model captures the key scalings governing angular momentum transport from galactic scales down to parsec scales, while our kinetic implementation enables injection of outflows properties chosen match observed nuclear outflows. show that "quasar mode" can have large impact on thermal intergalactic medium galaxies massive holes for...
ABSTRACT We use a particle tracking analysis to study the origins of circumgalactic medium (CGM), separating it into (1) accretion from intergalactic (IGM), (2) wind central galaxy, and (3) gas ejected other galaxies. Our sample consists 21 FIRE-2 simulations, spanning halo mass range Mh ∼ 1010–1012 M⊙, we focus on z = 0.25 2. Owing strong stellar feedback, only ∼L⋆ haloes retain baryon $\gtrsim\! 50\hbox{ per cent}$ their cosmic budget. Metals are more efficiently retained by haloes, with...
ABSTRACT The past decade has seen significant progress in understanding galaxy formation and evolution using large-scale cosmological simulations. While these simulations produce galaxies overall good agreement with observations, they employ different sub-grid models for supermassive black holes (BHs). We investigate the impact of on BH mass properties Illustris, TNG100, TNG300, Horizon-AGN, EAGLE, SIMBA simulations, focusing MBH − M⋆ relation function. All predict tight relations, struggle...
Abstract We describe a public data release of the FIRE-2 cosmological zoom-in simulations galaxy formation (available at http://flathub.flatironinstitute.org/fire ) from Feedback In Realistic Environments (FIRE) project. achieve parsec-scale resolution to explicitly model multiphase interstellar medium while implementing direct models for stellar evolution and feedback, including winds, core-collapse Type Ia supernovae, radiation pressure, photoionization, photoelectric heating. complete...
In a companion paper, we reported the self-consistent formation of quasar accretion disks with inflow rates $\sim 10\,{\rm M_{\odot}\,yr^{-1}}$ down to <300 Schwarzschild radii from cosmological radiation-magneto-thermochemical-hydrodynamical galaxy and star simulations. We see well-defined, steady-state disk which is stable against at sub-pc scales. The are optically thick, radiative cooling balancing accretion, but properties that distinct those assumed in most previous models. pressure...
It has recently become possible to zoom-in from cosmological sub-pc scales in galaxy simulations follow accretion onto supermassive black holes (SMBHs). However, at some point the approximations used on ISM (e.g. optically-thin cooling and stellar-population-integrated star formation [SF] feedback [FB]) break down. We therefore present first radiation-magnetohydrodynamic (RMHD) simulation which self-consistently combines FIRE physics (relevant galactic/ISM where SF/FB are ensemble-averaged)...
We present an analysis of the flow metals through circumgalactic medium (CGM) in Feedback Realistic Environments (FIRE) simulations galaxy formation, ranging from isolated dwarfs to $L*$ galaxies. find that nearly all produced high-redshift galaxies are carried out winds reach $0.25 R_{\rm vir}$. When measured at vir}$ metallicity outflows is slightly higher than interstellar (ISM) metallicity. Many thus reside CGM. Cooling and recycling this reservoir determine metal budget ISM. The...
We study the structure, age and metallicity gradients, dynamical evolution using a cosmological zoom-in simulation of Milky Way-mass galaxy from Feedback in Realistic Environments project. In simulation, stars older than 6 Gyr were formed chaotic, bursty mode have largest vertical scale heights (1.5-2.5 kpc) by z=0, while younger relatively calm, stable disk. The height increases with stellar at all radii, because (1) that earlier thicker "at birth", (2) kinematically heated to an even...
Recent models of black hole growth in a cosmological context have forwarded paradigm which the is self-regulated by feedback from itself. Here we use zoom simulations galaxy formation down to z = 2 show that such strong self-regulation required popular spherical Bondi accretion model, but plausible alternative model limited galaxy-scale torques does not require self-regulation. Instead, this torque-limited yields holes and galaxies evolving on average along observed scaling relations relying...
We use the FIRE-2 cosmological simulations to study formation of a quasi-static, virial-temperature gas phase in circumgalactic medium (CGM) at redshifts 0<z<5, and how this virialized affects evolution galactic discs. demonstrate that when halo mass crosses ~10^12 M_sun, cooling time shocked inner CGM (~0.1 R_vir, where R_vir is virial radius) exceeds local free-fall time. The then experiences transition from on average sub-virial temperatures (T<<T_vir), large pressure fluctuations...
We characterize mass, momentum, energy and metal outflow rates of multi-phase galactic winds in a suite FIRE-2 cosmological "zoom-in" simulations from the Feedback Realistic Environments (FIRE) project. analyze low-mass dwarfs, intermediate-mass Milky Way-mass halos, high-redshift massive halos. Consistent with previous work, we find that dwarfs eject about 100 times more gas their interstellar medium (ISM) than they form stars, while this mass "loading factor" drops below one galaxies. Most...
ABSTRACT We use the simba cosmological galaxy formation simulation to investigate relationship between major mergers ($\lesssim$4:1), starbursts, and quenching. Mergers are identified via sudden jumps in stellar mass M* well above that expected from situ star formation, while quenching is defined as going specific rate (sSFR) $\gt t_{\rm H}^{-1}$ $\lt 0.2t_{\rm H}^{-1}$, where tH Hubble time. At z ≈ 0–3, show ∼2–3× higher SFR than a mass-matched sample of star-forming galaxies, but globally...
ABSTRACT We present the first detailed study of spatially resolved dust continuum emission simulated galaxies at 1 &lt; z 5. run radiative transfer code skirt on a sample submillimetre-bright drawn from Feedback In Realistic Environments (FIRE) project. These reach Milky Way masses by = 2. Our modelling provides predictions for full rest-frame far-ultraviolet-to-far-infrared spectral energy distributions these galaxies, as well 25-pc resolution maps their across wavelength spectrum. The...
We present cosmological hydrodynamic simulations of a quasar-mass halo ($M_{\rm halo} \approx 10^{12.5}\,{\rm M}_{\odot}$ at z=2) that for the first time resolve gas transport down to inner 0.1 pc surrounding central massive black hole. model multi-phase interstellar medium including stellar feedback by supernovae, winds, and radiation, hyper-Lagrangian refinement technique increasing resolution dynamically approaching do not include hole feedback. show sub-pc inflow rate (1) can reach ~6...
ABSTRACT Increasingly, uncertainties in predictions from galaxy formation simulations (at sub-Milky Way masses) are dominated by stellar evolution inputs. In this paper, we present the full set of updates Feedback Realistic Environment (FIRE)-2 version FIRE project code, to next version, FIRE-3. While transition FIRE-1 FIRE-2 focused on improving numerical methods, here update tracks used determine feedback inputs, e.g. mass-loss (O/B and AGB), spectra (luminosities ionization rates),...
We use FIRE simulations to study disk formation in z~0, Milky Way-mass galaxies, and conclude that a key ingredient for the of thin stellar disks is ability accreting gas develop an aligned angular momentum distribution via internal cancellation *prior* joining galaxy. Among galaxies with high fraction (>70%) their young stars (h/R~0.1) we find that: (i) hot, virial-temperature dominates inflowing mass on halo scales (>~20 kpc), radiative losses offset by compression heating; (ii) this hot...
Abstract We present the Cosmology and Astrophysics with Machine Learning Simulations (CAMELS) Multifield Data set (CMD), a collection of hundreds thousands 2D maps 3D grids containing many different properties cosmic gas, dark matter, stars from more than 2000 distinct simulated universes at several times. The represent regions that span ∼100 million light-years have been generated state-of-the-art hydrodynamic gravity-only N -body simulations CAMELS project. Designed to train...
ABSTRACT The James Webb Space Telescope will have the power to characterize high-redshift quasars at z ≥ 6 with an unprecedented depth and spatial resolution. While brightest such redshift (i.e. bolometric luminosity $L_{\rm bol}\geqslant 10^{46}\, \rm erg/s$) provide us key information on most extreme objects in Universe, measuring black hole (BH) mass Eddington ratios of fainter bol}= 10^{45}-10^{46}\, erg\,s^{ -1}$ opens a path understand build-up more normal BHs 6. In this paper, we show...
ABSTRACT Feedback from accreting supermassive black holes (SMBHs) is thought to be a primary driver of quenching in massive galaxies, but how best implement SMBH physics into galaxy formation simulations remains ambiguous. As part the Realistic Environments (FIRE) project, we explore effects different modelling choices for accretion and feedback suite ∼500 cosmological zoom-in across wide range halo mass (1010–1013 M⊙). Within suite, vary numerical schemes BH feedback, efficiency, strength...
Abstract We train graph neural networks to perform field-level likelihood-free inference using galaxy catalogs from state-of-the-art hydrodynamic simulations of the CAMELS project. Our models are rotational, translational, and permutation invariant do not impose any cut on scale. From that only contain 3D positions radial velocities ∼1000 galaxies in tiny <?CDATA ${(25\,{h}^{-1}\mathrm{Mpc})}^{3}$?> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msup>...