1.3k citations · 6.2k across the 81 of their papers we have counts for
81 papers
The HalfDome Multi-Survey Cosmological Simulations: N-body Simulations
Adrian E. Bayer, Yici Zhong, Zack Li +3
Upcoming cosmological surveys have the potential to reach groundbreaking discoveries on multiple fronts, including the neutrino mass, dark energy, and inflation. Most of the key sc…
Efficient Reionization in a Large Hydrodynamic Galaxy Formation Simulation
James E. Davies, Simeon Bird, Simon Mutch +5
Accuracy in the topology and statistics of a simulated Epoch of Reionization (EoR) are vital to draw connections between observations and physical processes. While full radiative t…
AI-assisted super-resolution cosmological simulations III: Time evolution
Xiaowen Zhang, Patrick Lachance, Yueying Ni +5
In this work, we extend our recently developed super-resolution (SR) model for cosmological simulations to produce fully time consistent evolving representations of the particle ph…
Differentiable Cosmological Simulation with Adjoint Method
Yin Li, Chirag Modi, Drew Jamieson +5
Rapid advances in deep learning have brought not only myriad powerful neural networks, but also breakthroughs that benefit established scientific research. In particular, automatic…
Super-sample covariance of the power spectrum, bispectrum, halos, voids, and their cross covariances
Adrian E. Bayer, Jia Liu, Ryo Terasawa +3
We study the effect of super-sample covariance (SSC) on the power spectrum and higher-order statistics: bispectrum, halo mass function, and void size function. We also investigate…
Properties and Evolution of Dual and Offset AGN in the ASTRID Simulation at
Nianyi Chen, Tiziana Di Matteo, Yueying Ni +7
We examine the dual (both BHs active) and offset (one BH active) AGN population (comprising 2000 pairs at ) at in the AS…
The BlueTides Mock Image Catalogue: Simulated observations of high-redshift galaxies and predictions for JWST imaging surveys
Madeline A. Marshall, Katelyn Watts, Stephen Wilkins +7
We present a mock image catalogue of ~100,000 MUV=-22.5 to -19.6 mag galaxies at z=7-12 from the BlueTides cosmological simulation. We create mock images of each galaxy with the Ja…
The DESI -body Simulation Project -- II. Suppressing sample variance with fast simulations
Zhejie Ding, Chia-Hsun Chuang, Yu Yu +19
Dark Energy Spectroscopic Instrument (DESI) will construct a large and precise three-dimensional map of our Universe. The survey effective volume reaches $\sim20\Gpchcube$. It is a…
The DESI -body Simulation Project I: Testing the Robustness of Simulations for the DESI Dark Time Survey
Cameron Grove, Chia-Hsun Chuang, Ningombam Chandrachani Devi +19
Analysis of large galaxy surveys requires confidence in the robustness of numerical simulation methods. The simulations are used to construct mock galaxy catalogs to validate data…
Massive Black Hole Mergers with Orbital Information: Predictions from the ASTRID Simulation
Nianyi Chen, Yueying Ni, A. Miguel Holgado +6
We examine massive black hole (MBH) mergers and their associated gravitational wave signals from the large-volume cosmological simulation Astrid. Astrid includes galaxy formation a…
Covariance matrices for variance-suppressed simulations
Tony Zhang, Chia-Hsun Chuang, Risa H. Wechsler +9
Cosmological -body simulations provide numerical predictions of the structure of the Universe against which to compare data from ongoing and future surveys, but the growing volu…
The ASTRID Simulation: Galaxy Formation and Reionization
Simeon Bird, Yueying Ni, Tiziana Di Matteo +3
We introduce the ASTRID simulation, a large-scale cosmological hydrodynamic simulation in a Mpc/h box with particles. ASTRID contains a large number of high…
The ASTRID simulation: the evolution of Supermassive Black Holes
Yueying Ni, Tiziana Di Matteo, Simeon Bird +6
We present the evolution of black holes (BHs) and their relationship with their host galaxies in Astrid, a large-volume cosmological hydrodynamical simulation with box size 250 $h^…
The Impact of Dust on the Sizes of Galaxies in the Epoch of Reionization
Madeline A. Marshall, Stephen Wilkins, Tiziana Di Matteo +5
We study the sizes of galaxies in the Epoch of Reionization using a sample of ~100,000 galaxies from the BlueTides cosmological hydrodynamical simulation from z=7 to 11. We measure…
AI-assisted super-resolution cosmological simulations II: Halo substructures, velocities and higher order statistics
Yueying Ni, Yin Li, Patrick Lachance +4
In this work, we expand and test the capabilities of our recently developed super-resolution (SR) model to generate high-resolution (HR) realizations of the full phase-space matter…
Dynamical Friction Modeling of Massive Black Holes in Cosmological Simulations and Effects on Merger Rate Predictions
Nianyi Chen, Yueying Ni, Michael Tremmel +4
In this work we establish and test methods for implementing dynamical friction for massive black hole pairs that form in large volume cosmological hydrodynamical simulations which…
MADLens, a python package for fast and differentiable non-Gaussian lensing simulations
Vanessa Böhm, Yu Feng, Max E. Lee +1
We present MADLens a python package for producing non-Gaussian lensing convergence maps at arbitrary source redshifts with unprecedented precision. MADLens is designed to achieve h…
Not all peaks are created equal: the early growth of Supermassive Black Holes
Yueying Ni, Tiziana Di Matteo, Yu Feng
In this work, we use the constrained Gaussian realization technique to study the early growth of supermassive black holes (SMBHs) in cosmological hydrodynamic simulations, explorin…
Mocking Faint Black Holes during Reionization
Marius B. Eide, Benedetta Ciardi, Yu Feng +1
To investigate the potential abundance and impact of nuclear black holes (BHs) during reionization, we generate a neural network that estimates their masses and accretion rates by…
AI-assisted super-resolution cosmological simulations
Yin Li, Yueying Ni, Rupert A. C. Croft +3
Cosmological simulations of galaxy formation are limited by finite computational resources. We draw from the ongoing rapid advances in Artificial Intelligence (specifically Deep Le…
Large scale simulations of H and He reionization and heating driven by stars and more energetic sources
Marius B. Eide, Benedetta Ciardi, Luca Graziani +3
We present simulations of cosmic reionization and reheating from to , investigating the role of stars (emitting soft UV-photons), nuclear black holes (BHs, with power-l…
A fast particle-mesh simulation of non-linear cosmological structure formation with massive neutrinos
Adrian E. Bayer, Arka Banerjee, Yu Feng
Quasi-N-body simulations, such as FastPM, provide a fast way to simulate cosmological structure formation, but have yet to adequately include the effects of massive neutrinos. We p…
Stacking Redshifted 21cm Images of HII Regions Around High Redshift Galaxies as a Probe of Early Reionization
James E Davies, Rupert A. Croft, Tiziana Di-Matteo +3
A number of current and future experiments aim to detect the reionization of neutral hydrogen by the first stars and galaxies in the Universe via the redshifted 21cm line. Using th…
On the possibility of Baryon Acoustic Oscillation measurements at redshift with the Roman Space Telescope
Siddharth Satpathy, Zhaozhou An, Rupert A. C. Croft +5
The Nancy Grace Roman Space Telescope (RST), with its field of view and high sensitivity will make surveys of cosmological large-scale structure possible at high redshifts. We inve…