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20212026
most citedAI-assisted super-resolution cosmological simulations II: Halo substructures, velocities and higher order statistics

38 citations · 90 across the 17 of their papers we have counts for

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10 papers · 1 filter

astro-ph.GA2026

The lifetimes and properties of Little Red Dots in the AMBRA simulation

Patrick LaChance, Yihao Zhou, Aklant Kumar Bhowmick +6

We identify and analyze the little red dots (LRDs) in the AMBRA cosmological hydrodynamic simulation, by producing mock observations of the galaxies and active galactic nuclei (AGN…

astro-ph.GA2026

Theoretical emission lines and metallicity calibrations of H II regions in ASTRID simulation

Yao Yao, Kathryn Grasha, Stuart Wyithe +5

We present a theoretical framework to derive redshift-dependent metallicity calibrations for galaxies at =2-7. The ionization parameter () and gas pressure () in our appro…

astro-ph.GA2026

The Galaxy Luminosity Functions in ASTRID: Predictions for LSST

Fatemeh Hafezianzadeh, Tianqing Zhang, Paul Rogozenski +6

We present validated and forward-modelled galaxy luminosity functions and photometric predictions for the Vera C. Rubin Observatory Legacy Survey of Space and Time using the ASTRID…

astro-ph.GA2026

First results of AMBRA: Abundant Seeds and Early Mergers as a Pathway to the First Massive Black Holes

Yihao Zhou, Aklant Kumar Bhowmick, Tiziana Di Matteo +6

AMBRA combines the large cosmological volume and statistical power of ASTRID with the physically motivated gas-based black hole seeding models from BRAHMA. Motivated by JWST's disc…

astro-ph.GA2025

From ASTRID to BRAHMA -- The role of overmassive black holes in little red dots in cosmological simulations

Patrick LaChance, Aklant Kumar Bhowmick, Rupert A. C. Croft +8

We leverage the overmassive black holes () present in a realization of the BRAHMA cosmological hydrodynamic simulation suite to investigate their ro…

astro-ph.GA2025★ 8 cited

The ASTRID Simulation at z=0: From Massive Black Holes to Large-scale Structure

Yihao Zhou, Tiziana Di Matteo, Simeon Bird +7

We present the results for the cosmological simulation ASTRID. Hosting 0.33 trillion particles in a box of per side, ASTRID is one o…

astro-ph.GA2024★ 6 cited

Astrometric Jitter as a Detection Diagnostic for Recoiling and Slingshot Supermassive Black Hole Candidates

Anavi Uppal, Charlotte Ward, Suvi Gezari +4

Supermassive black holes (SMBHs) can be ejected from their galactic centers due to gravitational wave recoil or the slingshot mechanism following a galaxy merger. If an ejected SMB…

astro-ph.GA2024★ 12 cited

The evolution of galaxy morphology from redshift z=6 to 3: Mock JWST observations of galaxies in the ASTRID simulation

Patrick LaChance, Rupert Croft, Yueying Ni +3

We present mock JWST observations for more than 250,000 different galaxies from the Astrid simulation with . The mock observations are made using the BPASS stellar…

astro-ph.GA2023★ 2 cited

z~2 dual AGN host galaxies are disky: stellar kinematics in the ASTRID Simulation

Ekaterine Dadiani, Tiziana Di Matteo, Nianyi Chen +6

We study dual AGN host galaxy morphologies at using the ASTRID simulation, selecting black hole (BH) pairs with small separation (), high mass ($M_{\text{BH,12…

astro-ph.GA2023★ 1 cited

Fly-by galaxy encounters with multiple black holes produce star-forming linear wakes

Nianyi Chen, Patrick LaChance, Yueying Ni +4

We look for simulated star-forming linear wakes such as the one recently discovered by van Dokkum et al. (2023) in the cosmological hydrodynamical simulation ASTRID. Amongst the ru…