41 citations · 137 across the 23 of their papers we have counts for
24 papers
The AGORA High-resolution Galaxy Simulations Comparison Project. XI: Solving the Non-Spherical Morphology and Evolution of Dark Matter Halos with Haskap Pie
Kirk S. S. Barrow, Thinh Huu Nguyen, Santi Roca-Fàbrega +26
We introduce a halo solving and tracking procedure that intrinsically treats dark matter halos as non-spherical objects by leveraging the bound particle searching techniques used i…
Redshift Evolution of the Ratio of Supermassive Black Hole Mass to Stellar Mass
Ziyong Wu, Renyue Cen, Romain Teyssier
We run and analyze a suite of high-redshift zoom-in cosmological simulations with varying supernova feedback and supermassive black hole (SMBH) accretion prescriptions to study the…
From Feedback-Free Star Clusters to Little Red Dots via Compaction
Avishai Dekel, Dhruba Dutta Chowdhury, Sharon Lapiner +6
We address the origin of the Little Red Dots (LRDs) seen by JWST at cosmic morning () as compact stellar systems with over-massive black holes (BHs). We propose…
The AGORA High-resolution Galaxy Simulations Comparison Project. X: Formation and Evolution of Galaxies at the High-redshift Frontier
Hyeonyong Kim, Ji-hoon Kim, Minyong Jung +22
Recent observations from JWST have revealed unexpectedly luminous galaxies, exhibiting stellar masses and luminosities significantly higher than predicted by theoretical models at…
How Fast Could Supermassive Black Holes Grow At the Epoch of Reionization?
Ziyong Wu, Renyue Cen, Romain Teyssier
Utilizing cosmological hydrodynamic simulations we show that there is a brief super-Eddington accretion phase in typical halos at high redshift, impervious to AGN self-regulation.…
Numerical Cosmology
Romain Teyssier
In these lecture notes, we describe the current state-of-the-art for numerical simulations of large-scale structure and galaxy formation. Numerical simulations play a central role…
Supermassive Black Hole Growth in Massive Galaxies at Cosmic Dawn
James Sunseri, Zachary L. Andalman, Romain Teyssier
Among the emerging excess of massive, bright galaxies at Cosmic Dawn seen by the James Webb Space Telescope, several exhibit spectral features associated with active…
Cosmological simulations of the same spiral galaxy: satellite properties, the role of baryonic physics and star formation history in shaping dark matter cores/cusps
A. Nuñez-Castiñeyra, E. Nezri, P. Mollitor +3
We investigate the role of baryonic physics in shaping the population, structure, and internal dynamics of galactic subhalos using the Mochima suite of cosmological zoom-in simulat…
Line Intensity Mapping Prediction from the Cosmic Dawn (CoDa) III Simulation for H from Galaxies and the Intergalactic Medium during the Epoch of Reionization
Eugene Hyeonmin Lee, Joohyun Lee, Paul R. Shapiro +13
The evolution of large-scale structure, galaxies and the intergalactic medium (IGM) during the Epoch of Reionization (EoR) can be probed by upcoming Line Intensity Mapping (LIM) ex…
Synergising semi-analytical models and hydrodynamical simulations to interpret JWST data from the first billion years
Valentin Mauerhofer, Pratika Dayal, Martin G. Haehnelt +3
The field of high redshift galaxy formation has been revolutionised by JWST, which is yielding unprecedented insights on galaxy assembly at early times. Our key aim is to study the…
Constructing Merger Trees of Density Peaks Using Phase-Space Watershed Segmentation Algorithm
Robel Geda, Romain Teyssier
Structure identification in cosmological simulations plays an important role in analysing simulation outputs. The definition of these structures directly impacts the inferred prope…
The impact of cosmic ray feedback during the epoch of reionisation
Marion Farcy, Joakim Rosdahl, Yohan Dubois +5
Galaxies form and evolve via a multitude of complex physics. In this work, we investigate the role of cosmic ray (CR) feedback in galaxy evolution and reionisation, by examining it…
Dispersion Measures of Fast Radio Bursts through the Epoch of Reionization
Joshua J. Ziegler, Paul R. Shapiro, Taha Dawoodbhoy +13
Dispersion measures (DM) of fast radio bursts (FRBs) probe the density of electrons in the intergalactic medium (IGM) along their lines-of-sight, including the average density vers…
On the Origin of the High Star-Formation Efficiency in Massive Galaxies at Cosmic Dawn
Zachary Lee Andalman, Romain Teyssier, Avishai Dekel
Motivated by the early excess of bright galaxies seen by JWST, we run zoom-in cosmological simulations of a massive galaxy at Cosmic Dawn, in a halo of at …
Constraining Reionization with Lyα Damping-Wing Absorption in Galaxy Spectra: A Machine Learning Model Based on Reionization Simulations
Hyunbae Park, Intae Jung, Hidenobu Yajima +8
Recently, NIRSpec PRISM/CLEAR observations by JWST have begun providing rest-frame UV continuum measurements of galaxies at , revealing signatures of Ly damping-wing…
Dust-UV offsets in high-redshift galaxies in the Cosmic Dawn III simulation
Pierre Ocvirk, Joseph S. W. Lewis, Luke Conaboy +13
Recent observations have revealed puzzling spatial disparities between ALMA dust continuum and UV emission as seen by HST and JWST in galaxies at (e.g. ALPINE and REBELS su…
Impact of star formation models on the growth of simulated galaxies at high redshifts
Cheonsu Kang, Taysun Kimm, Daniel Han +4
Star formation is a key process that governs the baryon cycle within galaxies, however, the question of how it controls their growth remains elusive due to modeling uncertainties.…
Nexus: A framework for conrolled simulations of idealised galaxies
Thor Tepper-Garcia, Joss Bland-Hawthorn, Eugene Vasiliev +3
Motivated by the need for realistic, dynamically self-consistent, evolving galaxy models that avoid the complexity of full, and zoom-in, cosmological simulations, we have developed…
The AGORA High-resolution Galaxy Simulations Comparison Project IV: Halo and Galaxy Mass Assembly in a Cosmological Zoom-in Simulation at
Santi Roca-Fàbrega, Ji-hoon Kim, Joel R. Primack +25
In this fourth paper from the AGORA Collaboration, we study the evolution down to redshift and below of a set of cosmological zoom-in simulations of a Milky Way mass galaxy b…
The AGORA High-resolution Galaxy Simulations Comparison Project. V: Satellite Galaxy Populations In A Cosmological Zoom-in Simulation of A Milky Way-mass Halo
Minyong Jung, Santi Roca-Fàbrega, Ji-hoon Kim +18
We analyze and compare the satellite halo populations at in the high-resolution cosmological zoom-in simulations of a target halo ( mass) c…
The AGORA High-resolution Galaxy Simulations Comparison Project. VI. Similarities and Differences in the Circumgalactic Medium
Clayton Strawn, Santi Roca-Fàbrega, Joel R. Primack +26
We analyze the circumgalactic medium (CGM) for eight commonly-used cosmological codes in the AGORA collaboration. The codes are calibrated to use identical initial conditions, cosm…
A new star formation recipe for magneto-hydrodynamics simulations of galaxy formation
Eden Girma, Romain Teyssier
Star formation has been observed to occur at globally low yet locally varying efficiencies. As such, accurate capture of star formation in numerical simulations requires mechanisms…
The AGORA High-resolution Galaxy Simulations Comparison Project. III: Cosmological zoom-in simulation of a Milky Way-mass halo
Santi Roca-Fàbrega, Ji-hoon Kim, Loic Hausammann +20
We present a suite of high-resolution cosmological zoom-in simulations to of a halo at , obtained using seven contemporary astrophysical simul…
The AGORA high-resolution galaxy simulations comparison project: Public data release
Santi Roca-Fàbrega, Ji-hoon Kim, Joel R. Primack +11
As part of the AGORA High-resolution Galaxy Simulations Comparison Project (Kim et al. 2014, 2016) we have generated a suite of isolated Milky Way-mass galaxy simulations using 9 s…