Results 161 to 170 of about 5,320,922 (369)

Formation time-distribution of dark matter haloes:theories versus N-body simulations

open access: yes, 2003
In this paper we use numerical simulations to test the formation time distribution of dark matter haloes predicted by the analytical excursion set approaches.
林伟鹏, Lin Lihw, 景益鹏
core   +2 more sources

Orbital Capture of Ejecta into Periodic Orbits around Binary Asteroid (65803) Didymos

open access: yesThe Planetary Science Journal
The successful impact of the Double Asteroid Redirection Test (DART) spacecraft on Dimorphos enabled the first-ever extensive observation of a postimpact ejecta tail from a binary asteroid system.
Xiaoyu Fu   +28 more
doaj   +1 more source

Radiative hydrodynamic simulations of turbulent convection and pulsations of Kepler target stars [PDF]

open access: yes, 2014
The problem of interaction of stellar pulsations with turbulence and radiation in stellar convective envelopes is central to our understanding of excitation mechanisms, oscillation amplitudes and frequency shifts.
Kitiashvili I.
core  

D Simulations of the ISM pollution by SNII and SNI in dwarf spheroidal galaxies

open access: yes, 2005
We present preliminary results of 3-D hydro simulations of the interstellar medium evolution in dwarf spheroidal galaxies undergoing star formation for the first time.
MARCOLINI, ANDREA   +2 more
core   +1 more source

Helical Electron Beam Micro‐Bunching by High‐Order Modes in a Micro‐Plasma Waveguide

open access: yesAdvanced Science, EarlyView.
ABSTRACT Electron acceleration by a high‐power Laguerre‐Gaussian pulse in a micro‐plasma waveguide is investigated. When the incident laser travels in the waveguide, electrons on the wall are extracted into the vacuum core and accelerated by the longitudinal field of the waveguide mode.
Xingju Guo, Longqing Yi
wiley   +1 more source

Chromaticity-optimized Antenna Design and Bayesian Foreground Validation for the CANTAR Global 21 cm Experiment

open access: yesThe Astrophysical Journal
Detecting the global 21 cm signal from the epoch of reionization remains a major observational challenge due to bright foregrounds and instrumental systematics.
Michelle Mora   +8 more
doaj   +1 more source

Imaging Electric Polarization Switching in Multilayer Graphene

open access: yesAdvanced Science, EarlyView.
Domain wall sliding‐induced electric polarization switching is directly observed for the first time in multilayer graphene, enabled by a novel optical readout method. The polarization switching is realized upon application of global and local electric fields, and mechanical forces between neighboring polar domains of opposite out‐of‐plane polarizations
Zhou Zhou   +10 more
wiley   +1 more source

Modeling Nonlinear Evolution of Baryon Acoustic Oscillations: Convergence Regime of N-body Simulations and Analytic Models

open access: yes, 2009
We used a series of cosmological N-body simulations and various analytic models to study the evolution of the matter power spectrum in real space in a A cold dark matter universe.
Yahata, Kazuhiro   +12 more
core  

SIMULATION OF ASTRONOMICAL IMAGES FROM OPTICAL SURVEY TELESCOPES USING A COMPREHENSIVE PHOTON MONTE CARLO APPROACH [PDF]

open access: bronze, 2015
J. R. Peterson   +19 more
openalex   +1 more source

In Situ Pseudo‐Halide Diffusion Enables Buried Interface Regulation and Crystallinity Enhancement in Perovskite Solar Cells

open access: yesAdvanced Science, EarlyView.
Thermally activated LiHCOO induces in situ pseudo‐halide diffusion, promoting buried interface strain release and perovskite crystallization. The monoclinic LiHCOO phase forms an open framework structure that enhances HCOO− diffusion and drives interfacial restructuring.
Chao Gao   +4 more
wiley   +1 more source

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