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TNGC-SIDM I: Evolution of massive cluster mergers under the self-interacting dark matter paradigm
Wonki Lee, Dylan Nelson, Myungkook J. Jee +8
Merging galaxy clusters provide an ideal laboratory for testing the self-interacting nature of dark matter. In this paper, we present a pilot study of magnetohydrodynamical cosmolo…
Self-Interacting Dark Matter: From Particle Physics Theories to Structure Formation Simulations
Martin Rosenlyst, Vinh Tran, Oliver Zier +7
We present a unified theory-to-simulation framework for self-interacting dark matter (SIDM), combining a self-contained introduction to its particle-physics foundations and represe…
Galaxy and Halo Assembly Bias in Alternative Dark Matter Models
Yikun Wang, Idit Zehavi, Sergio Contreras +6
The clustering of dark matter halos depends not only on halo mass but also on secondary halo properties, a phenomenon known as halo assembly bias. Coupled with variations in halo o…
The Lumina Project: Morphology of Ionized Bubbles and Neutral Islands
Meredith Neyer, Aaron Smith, Ali Sadain +10
The Epoch of Reionization is characterized by the nucleation, expansion, and percolation of ionized bubbles in the intergalactic medium. Interpreting emerging multi-wavelength obse…
Host Dependence and Line-of-Sight Effects on Galaxy-Galaxy Strong Lensing in Clusters
Cian Roche, Michael McDonald, Priyamvada Natarajan +4
The cross section for galaxy-galaxy strong lensing (GGSL) events in galaxy clusters has repeatedly been found to be higher in observations than in cosmological simulations. We revi…
A Novel Implementation of Self-Interacting Dark Matter in AREPO
Oliver Zier, Xuejian Shen, Vinh Tran +3
Self-interacting dark matter (SIDM) influences halo structure through collisional heat transport and may solve several small-scale puzzles in structure formation. SIDM creates ther…
A Consistent Implementation of Cluster Strong Lensing in Cosmological Simulation Light Cones
Cian Roche, Mark Vogelsberger, Michael McDonald +9
Galaxy cluster strong gravitational lensing plays a central role in precision cosmology, yet robust theoretical predictions have lagged behind an abundance of high-quality strong l…
The Lumina Project: CMB Optical Depth Fluctuations from Patchy Reionization
Aaron Smith, Oliver Zier, Rahul Kannan +8
Patchy reionization couples the ionized-bubble morphology to the underlying density field, making the CMB Thomson optical depth sensitive to both the global ionization history and…
Introducing the Lumina project: large-volume radiation-hydrodynamic simulations of the epochs of hydrogen and helium reionization
Oliver Zier, Aaron Smith, Xuejian Shen +8
Understanding how galaxies and active galactic nuclei (AGN) jointly drive the reionization of the intergalactic medium (IGM) across cosmic time remains a major challenge in cosmolo…
The AIDA-TNG project: dark matter profiles and concentrations in alternative dark matter models
Giulia Despali, Carlo Giocoli, Lauro Moscardini +3
In the standard Cold Dark Matter (CDM) scenario, the density profiles of dark matter haloes are well described by analytical models linking their concentration to halo mass. Altern…
The AIDA-TNG project: 3D halo shapes
C. Giocoli, G. Despali, L. Moscardini +4
Context. The shapes of dark matter halos can be used to constrain the fundamental properties of dark matter. In standard Cold Dark Matter (CDM) cosmologies, halos are typically tri…
The AIDA-TNG project. Abundance, radial distribution, and clustering properties of halos in alternative dark matter models
Massimiliano Romanello, Giulia Despali, Federico Marulli +3
Warm and self-interactive dark matter cosmologies have been proposed as nonbaryonic solutions to the tensions between the cold dark matter model and observations at the kilopar…
Stacking 21-cm Maps around Lyman- Emitters during Reionization: Prospects for a Cross-correlation Detection with the Hydrogen Epoch of Reionization Array
Kai-Feng Chen, Meredith Neyer, Jacqueline N. Hewitt +2
Observations of the redshifted 21-cm line during the Epoch of Reionization will open a new window to probe the intergalactic medium during the formation of the first stars, galaxie…
On the sensitivity of different galaxy properties to warm dark matter
Belén Costanza, Bonny Y. Wang, Francisco Villaescusa-Navarro +7
We study the impact of warm dark matter (WDM) particle mass on galaxy properties using 1,024 state-of-the-art cosmological hydrodynamical simulations from the DREAMS project. We be…
The THESAN project: environmental drivers of Local Group reionization
Yu Zhao, Aaron Smith, Rahul Kannan +5
The timing of cosmic reionization across Local Group (LG) analogues provides insights into their early histories and surrounding large-scale structure. Using the radiation-hydrodyn…
Measuring the splashback feature: Dependence on halo properties and history
Qiaorong S. Yu, Stephanie O'Neil, Xuejian Shen +7
In this study, we define the novel splashback depth and width to examine how the splashback features of dark matter haloes are affected by the physical…
Infalling ultra-faint dwarfs as emissaries of the Axiverse
A. Pozo, T. Broadhurst, H. N. Luu +8
Recent discoveries of ultra-faint dwarf galaxies (UFDs) infalling onto the Milky Way, namely Leo K \& M at kpc, considerably strengthens the case that UFDs constitute…
Supersizing hydrodynamical simulations of reionization using perturbative techniques
Wenzer Qin, Katelin Schutz, Olivia Rosenstein +2
We show that perturbative techniques inspired by effective field theory (EFT) can be used to "paint on" the 21~cm field during reionization using only the underlying linear density…
Structure Formation under Inelastic Two-Component Dark Matter: Halo Statistics and Matter Power Spectra in the High- Universe
Ryan Low, Rakshak Adhikari, Jonah C. Rose +4
We present hydrodynamic simulations of a flavour-mixed two-component dark matter (2cDM) model that utilize IllustrisTNG baryonic physics. The model parameters are explored for two…
Introducing the AIDA-TNG project: galaxy formation in alternative dark matter models
Giulia Despali, Lauro Moscardini, Dylan Nelson +3
We introduce the AIDA-TNG project, a suite of cosmological magnetohydrodynamic simulations that simultaneously model galaxy formation and different variations of the underlying dar…
Novel density profile for isothermal cores of dark matter halos
Vinh Tran, Xuejian Shen, Mark Vogelsberger +5
We present a novel analytic density profile for halos in self-interacting dark matter (SIDM) models, which accurately captures the isothermal-core configuration, i.e. where both th…
Diverse dark matter haloes in Two-field Fuzzy Dark Matter
Hoang Nhan Luu, Philip Mocz, Mark Vogelsberger +8
Fuzzy dark matter (FDM) is a compelling candidate for dark matter, offering a natural explanation for the structure of diffuse low-mass haloes. However, the canonical FDM model wit…
Dynamical friction and measurements of the splashback radius in galaxy clusters
Talia M. O'Shea, Josh Borrow, Stephanie O'Neil +1
The splashback radius is one popular method of constraining the size of galaxy clusters, often measured through the logarithmic derivative of the galaxy number density profile. How…
Separating Dark Acoustic Oscillations from Astrophysics at Cosmic Dawn
Jo Verwohlt, Charlotte A. Mason, Julian B. Muñoz +3
The formation redshift and abundance of the first stars and galaxies is highly sensitive to the build up of low mass dark matter halos as well as astrophysical feedback effects whi…