Results 71 to 80 of about 1,806 (190)
18–22 cm VLBA Observational Evidence for Toroidal B-Field Components in Six AGN Jets
Galaxies, 2016 The formation of relativistic jets in Active Galactic Nuclei (AGN) is related to accretion onto their central supermassive black holes, and magnetic (B) fields are believed to play a central role in launching, collimating, and accelerating the jet ...
Juliana Cristina Motter +1 more
doaj +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Hafnium oxide (HfO2) nanoparticles (NPs), derived from a rare‐metal element, have gained increasing attention as a versatile class of functional nanostructures with unique optical, dielectric, and surface properties that enable diverse biomedical applications. As a representative rare‐metal oxide, HfO2 NPs with well‐defined architectures offer
Mothana Hussein Tarawneh +8 more
wiley +1 more source
The Astrophysical JournalThe inward drift of millimeter–centimeter sized pebbles in protoplanetary disks has become an important part of our current theories of planet formation and, more recently, planet composition as well.
Leon Trapman +18 more
doaj +1 more source
Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.Abstract Quantifying fault frictional properties is fundamental to understanding slip behavior and seismic hazard. We analyze 2 years of Sentinel‐1 SAR data following the 2023 Turkey earthquake doublet using Independent Component Analysis‐enhanced Small Baseline Subset‐InSAR, to resolve postseismic deformation and invert for afterslip on the East ...
Jianlong Chen +4 more
wiley +1 more source
Axisymmetric Modeling of DSHARP Dusty Disks: Asymmetric Structures and Inner-disk Dispersal
The Astrophysical JournalHigh-resolution observations of Class II protoplanetary disks frequently reveal annular structures that may indicate the presence of embedded planets.
Masataka Aizawa +2 more
doaj +1 more source
Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.Abstract The efficacy of rapid seismic response is fundamentally constrained by the sequential, multi‐step nature of conventional InSAR processing, where error propagation and reliance on auxiliary data hinder automation. Here, we present a holistic framework using Physics‐Aware Generative Adversarial Networks (GANs) to directly retrieve absolute ...
Chuanhua Zhu +3 more
wiley +1 more source
Outer Solar System Spacecraft to Probe the μHz Gravitational-wave Frontier
The Astrophysical JournalThe microhertz frequency band of gravitational waves probes the merger of supermassive black holes, as well as many other gravitational-wave phenomena. However, space-interferometry methods that use test masses would require further development of test ...
Matthew McQuinn, Casey McGrath
doaj +1 more source
Kalman filter for radio source power and direction of arrival estimation
EURASIP Journal on Advances in Signal ProcessingImages are an important source of information for spacecraft navigation. Based on an image and a known attitude, triangulation techniques (intersection or resection) are often used for positioning and navigation.
Cyril Cano +5 more
doaj +1 more source
VaDAR: Varstrometry for Dual AGN Using Radio Interferometry
The Astrophysical JournalBinary and dual active galactic nuclei (AGNs) are an important observational tool for studying the formation and dynamical evolution of galaxies and supermassive black holes.
Emma Schwartzman +7 more
doaj +1 more source
An Unsupervised Learning Method for Radio Interferometry Deconvolution
The Astrophysical Journal Supplement SeriesGiven the incomplete sampling of spatial frequencies by radio interferometers, achieving precise restoration of astrophysical information remains challenging.
Lei Yu +5 more
doaj +1 more source