activity
20202026
most citedSimulating cosmic structure formation with the GADGET-4 code

421 citations · 591 across the 38 of their papers we have counts for

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Showing 2026Show all

12 papers · 1 filter

astro-ph.CO2026

Self-Interacting Dark Matter: From Particle Physics Theories to Structure Formation Simulations

Martin Rosenlyst, Vinh Tran, Oliver Zier +7

We establish a unified theory-to-simulation framework for self-interacting dark matter (SIDM) that integrates three components: (i) a comprehensive, self-contained treatment of its…

astro-ph.GA2026

Towards robust simulations of the galactic dynamo: a cross-code comparison between Eulerian and Lagrangian schemes

Mark Ivan Ugalino, Benedikt Diemer, Vadim A. Semenov +8

Galactic magnetic fields are thought to be seeded by microscopic processes such as the Biermann battery and are primarily amplified to observed microgauss strengths by dynamo proce…

astro-ph.CO2026

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…

astro-ph.GA2026

Weighing Little Red Dots with Transient Events

Vinh Tran, Xuejian Shen, Oliver Zier +3

Recent JWST observations have revealed a large population of compact red sources at , known as Little Red Dots (LRDs), many of which show signatures of accreting massi…

astro-ph.GA2026

The THESAN-ZOOM project: clumpiness of high-redshift galaxies and its connection to bursty star formation

Zihao Wang, Xuejian Shen, Rahul Kannan +12

Recent JWST observations have revealed diverse high-redshift galaxy morphologies, including a population with irregular and clumpy structures. The physical origin of these structur…

astro-ph.GA2026

Globular cluster abundance patterns inherited from giant molecular clouds

William McClymont, Vasily Belokurov, Sandro Tacchella +16

Globular clusters exhibit large star-to-star variations and anticorrelations in their light element abundances that are commonly interpreted in terms of in-cluster self-enrichment,…

astro-ph.CO2026

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…

astro-ph.GA2026

The Lumina Project: Intergalactic Clumping and Recombination Sinks

Ali Sadain, Aaron Smith, Oliver Zier +10

Recombinations during the Epoch of Reionization are intrinsically inhomogeneous, with different regions of the intergalactic medium contributing unevenly depending on their density…

astro-ph.GA2026

From THESAN-ZOOM to JWST: Predicting ionizing photon escape and the rise of UV-bright reionization sources

Zebedee Summerfield, William McClymont, Sandro Tacchella +14

Understanding the sources and evolution of cosmic reionization remains a central challenge in astrophysics, with the escape of ionizing Lyman-continuum (LyC) photons from early gal…

astro-ph.GA2026★ 1 cited

The Lumina Project: The Demographics of Active Galactic Nuclei from Quasars to Little Red Dots at

Xuejian Shen, Oliver Zier, Aaron Smith +16

High-redshift active galactic nuclei (AGN) serve as powerful probes of early black-hole growth, galaxy formation, and the evolving intergalactic medium (IGM). In this work, we use…

astro-ph.CO2026

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…

astro-ph.CO2026

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…