Results 81 to 90 of about 301,318 (244)

Large format imaging spectrograph for the Large Submillimeter Telescope (LST)

open access: yes, 2020
We present a conceptual study of a large format imaging spectrograph for next-generation large (50-m class) single-dish telescopes, i.e., the Large Submillimeter Telescope (LST) and Atacama Large Aperture Submillimeter Telescope (AtLAST).
Kawabe, Ryohei (author)   +8 more
core   +1 more source

SCUBADive. I. JWST+ALMA Analysis of 289 Submillimeter Galaxies in COSMOS-web

open access: yesThe Astrophysical Journal
JWST has enabled detecting and spatially resolving the heavily dust-attenuated stellar populations of submillimeter galaxies, revealing detail that was previously inaccessible.
Jed McKinney   +38 more
doaj   +1 more source

Magnetic Resonance Neurography of the Brachial Plexus at 1.5 T: Diagnostic Reliability and Time Efficiency of Bilateral Ultra‐Fast 3D STIR vs. Unilateral 2D Dixon

open access: yesInternational Journal of Imaging Systems and Technology, Volume 36, Issue 1, January 2026.
ABSTRACT Recent technological advancements may now allow shorter reliable magnetic resonance neurography (MRN) scans of the brachial plexus (BP) even at 1.5 T. The objective of this study was to compare ultra‐fast bilateral coronal 3D T2w TSE STIR (3D‐IR) with unilateral sagittal 2D T2w TSE Dixon (2D‐DX) in terms of image quality, diagnostic ...
Fabio Zecca   +7 more
wiley   +1 more source

exoALMA XXII: A Two-dimensional Atlas of Deviations from Keplerian Disks

open access: yesThe Astrophysical Journal Letters
Protoplanetary disks are the birthplaces of planetary systems, and deviations from Keplerian rotation imprinted in disk gas kinematics serve as key tracers of physical processes and the presence of protoplanets within disks.
Misato Fukagawa   +37 more
doaj   +1 more source

Tested and improved atmospheric model for millimeter and submillimeter astronomical observatories

open access: yesAstronomy & Astrophysics
The megahertz spectral-resolution atmospheric radiative-transfer model for ground-based observatories working at millimeter and submillimeter wavelengths has been improved following an observational campaign with the Atacama Pathfinder EXperiment (APEX).
Pardo J. R.   +11 more
doaj   +1 more source

A Cross‐Correlation Method to Evaluate Wind Retrieval Accuracy on Mars Using Simulated Microwave Limb Sounder Observations

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.
Abstract While aspects such as the temperature and composition of the Martian atmosphere are relatively well known thanks to observations from numerous space missions, Martian atmospheric dynamics remain poorly constrained due to the scarcity of direct wind measurements. The use of microwave limb sounders to retrieve winds has been proposed in the past,
S. Jurado‐Fortuna   +3 more
wiley   +1 more source

Detection of an Explosive Outflow in G34.26+0.15

open access: yesThe Astronomical Journal
This paper reports on the detection of a likely explosive outflow in the high-mass star-forming complex G34.26+0.15, adding to the small number (six) of explosive outflows detected so far.
Namitha Issac   +8 more
doaj   +1 more source

Advances in Active Surface Shape Control for Segmented Primary Reflectors in Radio Telescopes

open access: yesGalaxies
Active surface shape control is a key engineering technology enabling high-frequency operation and high-performance observations in modern large-aperture radio telescopes.
Rui Wang, Lei Ding
doaj   +1 more source

First Detections of PN, PO, and PO+ toward a Shocked Low-mass Starless Core

open access: yesThe Astrophysical Journal Letters
Phosphorus is a key element that plays an essential role in biological processes important for living organisms on Earth. The origin and connection of phosphorus-bearing molecules to early solar system objects and star-forming molecular clouds is ...
Samantha Scibelli   +8 more
doaj   +1 more source

Achievement and Prospects of the Millimeter and Submillimeter Astronomy [PDF]

open access: yes, 2023
Представлен обзор основных направлений исследований, важнейших результатов и актуальных научных задач миллиметровой и субмиллиметровой астрономии. Приводятся сведения о существующих и перспективных инструментах этого диапазона.A review of the main areas ...
Зинченко, И. И.   +1 more
core  

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