Results 51 to 60 of about 1,703 (181)

Constraining Electron‐Impact Ionization of O2 Through UV Aurora Observations at Ganymede

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract While photoionization rates of Ganymede's O2 ${\mathrm{O}}_{2}$ dominated atmosphere are well constrained, the contribution of electron‐impact ionization is rather uncertain. Previous quantitative estimates have relied on assumptions about densities and energy distributions of precipitating electrons, or on rare spacecraft measurements that ...
Stefan Duling, Joachim Saur, Darrell Strobel, Philippa Molyneux, Jamey R. Szalay, Thomas K. Greathouse   +5 more
wiley   +1 more source

A Study of HH 270 with the James Webb Space Telescope

The Astrophysical Journal
We present a study of the Herbig–Haro object HH 270 based on observations from the James Webb Space Telescope (JWST), Subaru Telescope, and Atacama Large Millimeter/submillimeter Array (ALMA).
A. N. Ortiz Capeles, A. Noriega-Crespo, A. C. Raga, M. E. Lebrón, H. Arce, J. L. Morales Ortiz, C. A. Pantoja   +6 more
doaj   +1 more source

Computational Investigation on the Combined Effect of Applied Strain and Pore Configuration on Strain Concentrators in Additively Manufactured Metals

Fatigue &Fracture of Engineering Materials &Structures, Volume 49, Issue 5, Page 1656-1679, May 2026.
ABSTRACT Metal additive manufacturing (AM) provides a pathway for creating highly optimized components that would be difficult to produce using traditional manufacturing methods. However, regardless of printing parameters or postprocessing, porosity remains a prevalent challenge in AM components because strain concentrates in the vicinity of the pore ...
Erick Adan Ramirez, Saikumar Reddy Yeratapally, George Robert Weber, Kenji Shimada   +3 more
wiley   +1 more source

Generative AI's Impacts on the Environment: What Can Critical Humanities Scholarship Offer Sociological Inquiry?

Sociology Compass, Volume 20, Issue 5, May 2026.
ABSTRACT In recent years, there has been a rapid and massive expansion of generative artificial intelligence (AI) technologies and infrastructures. Big AI Tech corporations are vigorously marketing these services in the pursuit of profit, despite their devastating impacts on the environment.
Deborah Lupton
wiley   +1 more source

Searching for Planets Orbiting Vega with the James Webb Space Telescope

The Astronomical Journal
The most prominent of the IRAS debris disk systems, α Lyrae (Vega), at a distance of 7.7 pc, has been observed by both the NIRCam and MIRI instruments on the James Webb Space Telescope.
Charles Beichman, Geoffrey Bryden, Jorge Llop-Sayson, Marie Ygouf, Alexandra Greenbaum, Jarron Leisenring, Andras Gaspar, John Krist, George Rieke, Schuyler Wolff, Kate Su, Klaus Hodapp, Michael Meyer, Doug Kelly, Martha Boyer, Doug Johnstone, Scott Horner, Marcia Rieke   +17 more
doaj   +1 more source

From Mechanics to Electronics: Influence of ALD Interlayers on the Multiaxial Electro‐Mechanical Behavior of Metal–Oxide Bilayers

Advanced Functional Materials, Volume 36, Issue 27, 2 April 2026.
Ultrathin AlOxHy interlayers between aluminum films and polymer substrates significantly improve electro‐mechanical properties of flexible thin film systems. By precisely controlling interlayer thickness using atomic layer deposition, this study identifies an optimal interlayer thickness of 5–10 nm that enhances ductility and delays cracking.
Johanna Byloff, Vivek Devulapalli, Daniele Casari, Thomas E. J. Edwards, Claus O. W. Trost, Megan J. Cordill, Shuhel Altaf Husain, Pierre‐Olivier Renault, Damien Faurie, Barbara Putz   +9 more
wiley   +1 more source

The James Webb Space Telescope: Mission Overview and Status [PDF]

AIAA SPACE 2012 Conference & Exposition, 2011
The James Webb Space Telescope (JWST) is the scientific successor to the Hubble Space Telescope. It is a cryogenic infrared space observatory with a 25 m2 aperture (6 m class) telescope that will achieve diffraction limited angular resolution at a wavelength of 2 µm.
openaire   +1 more source

Comprehensive Characterization of Water Group Ion Composition and Distributions in Saturn's Magnetosphere With Cassini Plasma Spectrometer Data

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract Saturn's magnetosphere is continuously supplied with neutrals from the Enceladus plume and the icy rings, which undergo ionization and charge‐exchange to form a complex water‐group plasma environment. While the Cassini Plasma Spectrometer (CAPS) instrument has provided extensive compositional information, detailed separation of individual ...
Thomas K. Kim, D. B. Reisenfeld, R. J. Wilson, H. T. Smith, A. K. Woodson, F. Allegrini, R. W. Ebert, M. G. Henderson, P. K. Kollmann, G. Livadiotis, G. Nicolaou, J. R. Szalay, P. W. Valek, A. Masters   +13 more
wiley   +1 more source

Characterization of the Outer Uranian Rings in the Visual and Near‐IR Using Keck, JWST, and HST Observations

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract We present observations of the Uranian outer ring system at near‐infrared and visible wavelengths. Observations with the Keck Telescope were taken in July‐August 2007 at 2.12 and 1.63 μm, when the ring plane was almost edge‐on (ring opening angle B=0.62 $B=0.62$–0.24° ${}^{\circ}$). These data showed, for the first time, the μ ring at infrared
Imke de Pater, Mark R. Showalter, Matt M. Hedman, Heidi B. Hammel, Mike Roman, Leigh N. Fletcher, Maryame El Moutamid, Damya Souami   +7 more
wiley   +1 more source

An Investigation into the Selection and Colors of Little Red Dots and Active Galactic Nuclei

The Astrophysical Journal
Recently, a large number of compact sources at z  > 4 with blue UV slopes and extremely red rest-frame optical slopes have been found in James Webb Space Telescope (JWST) extragalactic surveys. As a subsample of these sources, commonly called “little red
Kevin N. Hainline, Roberto Maiolino, Ignas Juodžbalis, Jan Scholtz, Hannah Übler, Francesco D’Eugenio, Jakob M. Helton, Yang Sun, Fengwu Sun, Brant Robertson, Sandro Tacchella, Andrew J. Bunker, Stefano Carniani, Stephane Charlot, Emma Curtis-Lake, Eiichi Egami, Benjamin D. Johnson, Xiaojing Lin, Jianwei Lyu, Pablo G. Pérez-González, Pierluigi Rinaldi, Maddie S. Silcock, Giacomo Venturi, Christina C. Williams, Christopher N. A. Willmer, Chris Willott, Junyu Zhang, Yongda Zhu   +27 more
doaj   +1 more source