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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…