Results 81 to 90 of about 5,368 (195)

Resolving the Effects of Rotation in Altair with Long‐Baseline Interferometry

The Astrophysical Journal, 2006
Accepted by the Astrophysical ...
D. M. Peterson, C. A. Hummel, T. A. Pauls, J. T. Armstrong, J. A. Benson, G. C. Gilbreath, R. B. Hindsley, D. J. Hutter, K. J. Johnston, D. Mozurkewich, H. Schmitt   +10 more
openaire   +2 more sources

Multifrequency Analysis of Favored Models for the Messier 87* Accretion Flow

The Astrophysical Journal
The polarized images of the supermassive black hole Messier 87* (M87*) produced by the Event Horizon Telescope (EHT) provide a direct view of the near-horizon emission from a black hole accretion and jet system.
Daniel C. M. Palumbo, Michi Bauböck, Charles F. Gammie   +2 more
doaj   +1 more source

Regulating the Degradation and Cytocompatibility Behavior of Additively Manufactured Pure Zinc Through Post‐Processing Surface Treatments

Rare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT Zinc‐based biodegradable metals are promising implant materials, and additive manufacturing offers a powerful route for their patient‐specific fabrication. However, process‐induced surface defects can accelerate degradation and compromise biocompatibility, rendering post‐processing essential.
Yixuan Shi, Jingtao Dai, Zihao Chen, Chengcong Huang, Xuan Li, Shangyan Zhao, Zhao Yang, Yifan Song, Yuzhi Wu, Qinzhi Huang, Jing Yao, Yageng Li, Ping Li, Luning Wang   +13 more
wiley   +1 more source

Chemical and Biological Determinants of PEG‐Lipid Shedding From Therapeutic Nanoparticles

Small, Volume 22, Issue 58, 16 October 2026.
PEG‐lipids play a central role in governing lipid nanoparticle stability, targeting, and function. However, PEG‐lipids can “shed” from the nanoparticle surface in biological environments, with the extent and kinetics of shedding influenced by chemical and biological factors.
Ethan P. Cisneros, Aadya S. Wijesekera, Lisa R. Volpatti   +2 more
wiley   +1 more source

Prospects for the Detection of the Sgr A* Photon Ring with Next-generation Event Horizon Telescope Polarimetry

The Astrophysical Journal Letters
The Event Horizon Telescope (EHT) has imaged two supermassive black holes, Messier 87* (M87*) and Sagittarius A* (Sgr A*), using very-long-baseline interferometry (VLBI).
Kaitlyn M. Shavelle, Daniel C. M. Palumbo   +1 more
doaj   +1 more source

Removing the Effect of Source Structure From Correlated VLBI Data

Radio Science, Volume 61, Issue 10, October 2026.
Abstract Recent studies suggest that in geodetic very long baseline interferometry (VLBI) the assumption of sources being point‐like results in a significant residual error introduced by the effect of source structure. Our aim is to remove the impact of source structure from geodetic VLBI data right after the correlation step. For this purpose, we have
Frédéric Jaron, Víctor Pérez‐Díez, Hana Krásná, Johannes Böhm, Patrick Charlot, Arnaud Collioud, Jakob Gruber, Iván Martí‐Vidal, Axel Nothnagel   +8 more
wiley   +1 more source

Radio Astronomy with NASA’s Deep Space Network

Galaxies
The Deep Space Network (DSN) is the spacecraft tracking and communication infrastructure for NASA’s deep space missions. At three sites, approximately equally separated in (terrestrial) longitude, there are multiple radio antennas outfitted with ...
T. Joseph W. Lazio, Stephen M. Lichten
doaj   +1 more source

Determination of Earth's Static Gravity Field Using Quantum Gravity Satellites at Very Low Earth Orbit

Earth and Space Science, Volume 13, Issue 10, October 2026.
Abstract Very Low Earth Orbit (VLEO) satellite platforms and quantum‐optical sensing technologies may provide new observation approaches for improving Earth's static gravity field models. This study conceptually assesses their potential contribution through a two‐tier closed‐loop simulation framework.
Wenming Chen, Hao Zhou, Yanbin Zhao, Zhu Zhu, Shuyun Zheng, Zhicai Luo, Zebing Zhou   +6 more
wiley   +1 more source

Interferometric Images of the Starspot Evolution of ζ Andromedae

The Astrophysical Journal
The evolution of starspots of the giant primaries of RS CVn systems is typically detected indirectly with photometric and spectroscopic monitoring. These observations suggest slowly-evolving stellar surfaces and can constrain differential rotation as ...
Rachael M. Roettenbacher, John D. Monnier, Heidi Korhonen, Gregory W. Henry, Cliff Kotnik, Joshua Pepper, Bálint Seli, Krisztián Vida, Attila Bódi, Borbála Cseh, Géza Csörnyei, Máté Krezinger, Réka Könyves-Tóth, Levente Kriskovics, Krisztián Sárneczky, Ádám Sódor, Róbert Szakáts, Stefan Kraus, Narsireddy Anugu, Claire L. Davies, Tyler Gardner, Cyprien Lanthermann, Gail H. Schaefer, Benjamin R. Setterholm   +23 more
doaj   +1 more source

Tracking Slow‐Moving Landslide Responses to the 2023 Kahramanmaraş Earthquake With InSAR

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 10, October 2026.
Abstract Strong earthquakes can have a dual impact on the slow‐moving landslide budget of a landscape by either triggering new actively deforming hillslopes or stabilizing existing ones. However, their regional‐scale influence on hillslope processes remains poorly understood because of limited observational coverage and the masking effects of long ...
Ashok Dahal, Hakan Tanyaş, Alexander L. Handwerger, Luigi Lombardo, Eric J. Fielding   +4 more
wiley   +1 more source