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astro-ph.GA2025

High-redshift AGN population in radiation-hydrodynamics simulations

Teodora-Elena Bulichi, Oliver Zier, Aaron Smith +7

High-redshift active galactic nuclei (AGN) have long been recognized as key probes of early black hole growth and galaxy evolution. However, modeling this population remains diffic…

astro-ph.GA2025

Introducing the THESAN-ZOOM project: radiation-hydrodynamic simulations of high-redshift galaxies with a multi-phase interstellar medium

Rahul Kannan, Ewald Puchwein, Aaron Smith +11

We introduce the THESAN-ZOOM project, a comprehensive suite of high-resolution zoom-in simulations of high-redshift () galaxies selected from the THESAN simulation volume…

astro-ph.CO2025

Constraints on Primordial Magnetic Fields from the Lyman-α forest

Mak Pavičević, Vid Iršič, Matteo Viel +5

We present the first constraints on primordial magnetic fields from the Lyman- forest using full cosmological hydrodynamic simulations. At the scales and redshifts probed by th…

astro-ph.GA2025

The impact of faint AGN discovered by JWST on reionization

Shikhar Asthana, Martin G. Haehnelt, Girish Kulkarni +4

The relative contribution of emission from stellar sources and accretion onto supermassive black holes to reionization has been brought into focus again by the apparent high abunda…

astro-ph.GA2025

How Early Could the Milky Way's Disk Form?

Vadim A. Semenov, Charlie Conroy, Aaron Smith +2

We investigate early, , galaxy formation in a cosmological zoom-in simulation of a close, early-forming Milky Way (MW) analog extracted from TNG50 simulation and resimulated…

astro-ph.GA2025

The THESAN-ZOOM project: Long-term imprints of external reionization on galaxy evolution

Oliver Zier, Rahul Kannan, Aaron Smith +8

We investigate the impact of ionizing external ultraviolet (UV) radiation on low-mass haloes () at high redshift using baryonic resolution zoom-…