Results 11 to 20 of about 9,109 (267)

Asymmetric eROSITA bubbles as the evidence of a circumgalactic medium wind

open access: yesNature Communications, 2023
The origins of the pair of X-ray bubbles, called eROSITA bubbles (eRBs), detected in the halo of Milky Way are debated. Here, the authors show hydrodynamical simulations suggesting circumgalactic medium wind model can explain asymmetric eRBs.
Guobin Mou   +8 more
doaj   +1 more source

Hydrodynamical Simulations of Recollimation Shocks within Relativistic Astrophysical Jets

open access: yesGalaxies, 2018
Astrophysical jets launched from active galactic nuclei can remain tightly collimated over large distances due, in part, to recollimation shocks.
Christopher D. Kaye   +2 more
doaj   +1 more source

Numerical simulation of the dynamics of sedimentary river beds with a stochastic Exner equation

open access: yesESAIM: Proceedings and Surveys, 2015
At the scale of a river reach, the dynamics of the river bed is typically modelled by Exner equation (conservation of the solid mass) with an empirical solid flux of transported sediments, which is a simple deterministic algebraic ...
Audusse Emmanuel   +4 more
doaj   +1 more source

Is Young's Modulus a Critical Coating Property Determining Fouling‐Release Performance of Marine Coatings?

open access: yesAdvanced Engineering Materials, EarlyView.
The release of foulers from protective marine coatings is determined by several interrelated material properties, including the strength of Young's modulus, the flexibility of chain segments, the surface free energy, and the magnitude of hydrodynamic stress.
Johann C. Schaal   +2 more
wiley   +1 more source

High-precision Galaxy Clustering Predictions from Small-volume Hydrodynamical Simulations via Control Variates

open access: yesThe Astrophysical Journal
Cosmological simulations of galaxy formation are an invaluable tool for understanding galaxy formation and its impact on cosmological parameter inference from large-scale structures.
Alexandra Doytcheva   +2 more
doaj   +1 more source

Can Cosmological Simulations Reproduce the Spectroscopically Confirmed Galaxies Seen at z ≥ 10?

open access: yesThe Astrophysical Journal Letters, 2023
Recent photometric detections of extreme ( z > 10) redshift galaxies from the JWST have been shown to be in strong tension with existing simulation models for galaxy formation and in the most acute case, in tension with ΛCDM itself.
B. W. Keller   +3 more
doaj   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

open access: yesAdvanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner   +9 more
wiley   +1 more source

General Implicit Runge–Kutta Integrators for Multifluid Gas–Dust Aerodynamic Drag

open access: yesThe Astrophysical Journal
The integration of aerodynamic drag is a fundamental step in simulating dust dynamics in hydrodynamical simulations. We propose a novel integration scheme, designed to be compatible with Strang splitting techniques, which allows for the straightforward ...
Giovanni Tedeschi-Prades   +4 more
doaj   +1 more source

Kinetic Insights into Precursor‐Assisted Soft Sphere Close Packing Revealed by In Situ GISAXS with Implications for Gas Sensing

open access: yesAdvanced Functional Materials, EarlyView.
The versatile precursor‐assisted soft sphere close packing during slot‐die coating is investigated with in situ X‐ray scattering. The soft crystallization pathways towards a close packing involve multistep structural transitions such as surface nucleation, in‐plane, and out‐of‐plane crystallization.
Guangjiu Pan   +14 more
wiley   +1 more source

Merger-tree-based Galaxy Matching: A Comparative Study across Different Resolutions

open access: yesThe Astrophysical Journal
We introduce a novel halo/galaxy matching technique between two cosmological simulations with different resolutions, which utilizes the positions and masses of halos along their subhalo merger tree. With this tool, we conduct a study of resolution biases
Minyong Jung   +5 more
doaj   +1 more source

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