Results 71 to 80 of about 536,601 (286)
Magnetic spiral arms and galactic outflows
Galactic magnetic arms have been observed between the gaseous arms of some spiral galaxies; their origin remains unclear. We suggest that magnetic spiral arms can be naturally generated in the interarm regions because the galactic fountain flow or wind ...
Shukurov A, Subramanian K, Chamandy L
core +4 more sources
JWST Reveals a Surprisingly High Fraction of Galaxies Being Spiral-like at 0.5 ≤ z ≤ 4
The Astrophysical Journal LettersSpiral arms are one of the most important features used to classify the morphology of local galaxies. The cosmic epoch when spiral arms first appeared contains essential clues to the evolution of disk galaxies.
Vicki Kuhn +5 more
doaj +1 more source
Hydro‐ and Lipophilicity of Molecular‐Size‐Controlled Hydrogel Drug Carriers
Advanced Materials Technologies, EarlyView.We investigate nano‐sized hydrogel drug carriers with tailored hydro‐ and lipophilicity. We design their encapsulation and structure‐forming capabilities and follow them in real time during fabrication using time‐resolved and in situ grazing incidence x‐ray scattering.
Elisabeth Erbes +21 more
wiley +1 more source
Wrinkles in Time. II. Stellar Age Trends in Kinematic Signatures from Transient Spiral Structure
The Astrophysical JournalSpiral arms in the disks of galaxies like the Milky Way can generate kinematic signatures, which appear as ridges or wrinkles in action space. Such signatures have proven difficult to disentangle using kinematic measures alone.
Amy Smock +6 more
doaj +1 more source
Combined arms sufficiency study.
, 2008 This study is a comparative review of the sufficiency of combined arms instruction in officer basic and advanced courses in all TRADOC schools. Includes a complete verified list of combined arms subjects, and an analysis of sufficiency levels identified ...
core
On‐Chip Photonic Neural Network Architectures
Advanced Optical Materials, EarlyView.This review presents a comprehensive overview of on‐chip photonic neural network architectures, covering key photonic building blocks, representative network types, and emerging applications. Recent advances, implementation challenges, and future directions are examined, highlighting the potential of integrated photonics to enable ultrafast, energy ...
Seokjin Hong +7 more
wiley +1 more source
Arm classification and velocity gradients in spiral galaxies
The Astrophysical Journal, 1991 On the basis of published rotation curves, velocity gradients are compiled for 94 galaxies. A significant correlation is found in this sample of galaxies between their gradients and arm classes (as given by Elmegreen and Elmegreen, 1982); galaxies with steeper curves tend to have a flocculent arm structure, and galaxies with flatter curves tend to have
BIVIANO A +4 more
openaire +2 more sources
Advanced Robotics Research, EarlyView.A codesign multiobjective optimization framework was developed to enhance the morphology and controller of a snake‐like robot driven by artificial muscles. It improved planar locomotion, agility, and power efficiency. The approach optimized link geometry and controller gains, revealing that shorter muscles near joints and longer linkages maximize ...
Ayla Valles, Mahdi Haghshenas‐Jaryani
wiley +1 more source
Infall Explains the Disk Kinematics of AB Aur without Gravitational Instability
The Astrophysical Journal LettersLate-stage infall onto protoplanetary disks can produce large-scale spiral arms. In this Letter, we used 3D smoothed particle hydrodynamics and radiative transfer simulations to study the kinematic perturbations induced in disks by infalling material. We
Josh Calcino +2 more
doaj +1 more source