Hydrodynamical simulations of the galaxy population: enduring successes and outstanding challenges

RA Crain, F van de Voort - Annual Review of Astronomy and …, 2023 - annualreviews.org
We review the progress in modeling the galaxy population in hydrodynamical simulations of
the ΛCDM cosmogony. State-of-the-art simulations now broadly reproduce the observed …

Probing the Circumgalactic Medium with Fast Radio Bursts: Insights from CAMELS

I Medlock, D Nagai, P Singh… - The Astrophysical …, 2024 - iopscience.iop.org
Most diffuse baryons, including the circumgalactic medium (CGM) surrounding galaxies and
the intergalactic medium (IGM) in the cosmic web, remain unmeasured and unconstrained …

Cosmological baryon spread and impact on matter clustering in CAMELS

M Gebhardt, D Anglés-Alcázar, J Borrow… - Monthly Notices of …, 2024 - academic.oup.com
We quantify the cosmological spread of baryons relative to their initial neighbouring dark
matter distribution using thousands of state-of-the-art simulations from the Cosmology and …

Predicting the impact of feedback on matter clustering with machine learning in CAMELS

AM Delgado, D Anglés-Alcázar, L Thiele… - Monthly Notices of …, 2023 - academic.oup.com
Extracting information from the total matter power spectrum with the precision needed for
upcoming cosmological surveys requires unraveling the complex effects of galaxy formation …

An Exploration of AGN and Stellar Feedback Effects in the Intergalactic Medium via the Low-redshift Lyα Forest

MT Tillman, B Burkhart, S Tonnesen… - The Astronomical …, 2023 - iopscience.iop.org
We explore the role of galactic feedback on the low-redshift Lyα (Lyα) forest (z≲ 2) statistics
and its potential to alter the thermal state of the intergalactic medium. Using the Cosmology …

Interpreting Sunyaev–Zel'dovich observations with MillenniumTNG: mass and environment scaling relations

B Hadzhiyska, S Ferraro, R Pakmor… - Monthly Notices of …, 2023 - academic.oup.com
ABSTRACT Sunyaev–Zel'dovich (SZ) measurements can dramatically improve our
understanding of the intergalactic medium and the role of feedback processes in galaxy …

Cosmology with One Galaxy? The ASTRID Model and Robustness

N Echeverri-Rojas, F Villaescusa-Navarro… - The Astrophysical …, 2023 - iopscience.iop.org
Recent work has pointed out the potential existence of a tight relation between the
cosmological parameter Ω m, at fixed Ω b, and the properties of individual galaxies in state …

Painting baryons on to N-body simulations of galaxy clusters with image-to-image deep learning

U Chadayammuri, M Ntampaka… - Monthly Notices of …, 2023 - academic.oup.com
Galaxy cluster mass functions are a function of cosmology, but mass is not a direct
observable, and systematic errors abound in all its observable proxies. Mass-free inference …

Inferring warm dark matter masses with deep learning

JC Rose, P Torrey… - Monthly Notices of …, 2024 - academic.oup.com
We present a new suite of over 1500 cosmological N-body simulations with varied warm
dark matter (WDM) models ranging from 2.5 to 30 keV. We use these simulations to train …

A Universal Equation to Predict Ωm from Halo and Galaxy Catalogs

H Shao, NSM de Santi… - The Astrophysical …, 2023 - iopscience.iop.org
We discover analytic equations that can infer the value of Ω m from the positions and velocity
moduli of halo and galaxy catalogs. The equations are derived by combining a tailored …