11 hasil untuk "Volker Springel"
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Artikel Jurnal
Cyclic Zoom: Multiscale GRMHD Modeling of Black Hole Accretion and Feedback
We present a “cyclic zoom” method to capture the dynamics of accretion flows onto black holes across a vast range of spatial and temporal scales in general relativistic magnetohydrodynamic (GRMHD) simulations. In this method, we cyclically zoom out (derefine) and zoom in (refine) the simulation…
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Artikel Jurnal
FEASTS Compared with Simulations: Abnormally Irregular and Extended H i Morphologies at a Column Density of 1018 cm−2 in TNG50 and Auriga
With new atomic-hydrogen (H i ) observations of FAST Extended Atlas of Selected Targets Survey (FEASTS), we present the first statistical comparison of H i morphology between observations and cosmological simulations, focusing on low-column-density (∼10 ^18 cm ^−2 ) regions of Milky Way–like…
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Artikel Jurnal Teks lengkap
The AREPO Public Code Release
Abstract We introduce the public version of the cosmological magnetohydrodynamical moving-mesh simulation code A repo . This version contains a finite-volume magnetohydrodynamics algorithm on an unstructured, dynamic Voronoi tessellation coupled to a tree-particle-mesh algorithm for the Poisson…
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Artikel Jurnal
Percolation Statistics in the MillenniumTNG Simulations
The statistical analysis of cosmic large-scale structure is most often based on simple two-point summary statistics, like the power spectrum or the two-point correlation function of a sample of galaxies or other types of tracers. In contrast, topological measures of clustering are also sensitive to…
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Artikel Jurnal Teks lengkap
Simulating cosmic structure formation with the gadget -4 code
ABSTRACT Numerical methods have become a powerful tool for research in astrophysics, but their utility depends critically on the availability of suitable simulation codes. This calls for continuous efforts in code development, which is necessitated also by the rapidly evolving technology underlying…
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Artikel Jurnal Teks lengkap
Introducing the thesan project: radiation-magnetohydrodynamic simulations of the epoch of reionization
ABSTRACT We introduce the thesan project, a suite of large volume ($L_\mathrm{box} = 95.5 \, \mathrm{cMpc}$) radiation-magnetohydrodynamic simulations that simultaneously model the large-scale statistical properties of the intergalactic medium during reionization and the resolved characteristics of…
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Artikel Jurnal
Statistical Properties of Cold Streams in Massive Star-forming Halos in TNG50
Cold, dense streams of gas are predicted to penetrate deeply into massive (≳10 ^12 M _⊙ ) halos at cosmic noon ( z ∼ 4–2), fueling galaxies to sustain high star formation rates. We investigate the prevalence of such cold streams in TNG50 over the range z = 4–0, using a novel algorithm to…
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Artikel Jurnal Teks lengkap
Universal structure of dark matter haloes over a mass range of 20 orders of magnitude
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Artikel Jurnal
Brightest Cluster Galaxy Offsets in Cold Dark Matter
The distribution of offsets between the brightest cluster galaxies of galaxy clusters and the centroid of their dark matter distributions is a promising probe of the underlying dark matter physics. In particular, since this distribution is sensitive to the shape of the potential in galaxy cluster…
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Artikel Jurnal
Bursty Star Formation in Dwarfs is Sensitive to Numerical Choices in Supernova Feedback Models
Simulations of galaxy formation are mostly unable to resolve the energy-conserving phase of individual supernova events, having to resort to subgrid models to distribute the energy and momentum resulting from stellar feedback. However, the properties of these simulated galaxies, including the…
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Artikel Jurnal
Introducing the THESAN-ZOOM project: radiation-hydrodynamic simulations of high-redshift galaxies with a multi-phase interstellar medium
We introduce the THESAN-ZOOM project, a comprehensive suite of high-resolution zoom-in simulations of $14$ high-redshift ($z>3$) galaxies selected from the THESAN simulation volume. This sample encompasses a diverse range of halo masses, with $M_\mathrm{halo} \approx 10^8 -…