Results 41 to 50 of about 2,356 (224)

Ground‐Based Microwave Measurements of ClO and O3 Over Scott Base, Antarctica

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 7, 16 April 2026.
Abstract We present measurements from a new microwave instrument that has been deployed at Scott Base, Antarctica, primarily to measure ClO. The new instrument allows for the extension of the time series of lower stratospheric ClO measurements begun in 1996 at this site, while some of the technical improvements offer the possibility of making ...
Gerald E. Nedoluha, R. Michael Gomez, Ian Boyd, Helen Neal, Douglas R. Allen, Alan Parrish, Brian J. Connor, Michael Kotkamp, Kate McKenzie, Eric L. Fleming, Thomas F. Hanisco, Michelle L. Santee   +11 more
wiley   +1 more source

Submillimeter galaxies behind the bullet cluster (1E 0657-56) [PDF]

, 2010
Context. Clusters of galaxies are effective gravitational lenses able to magnify background galaxies and making it possible to probe the fainter part of the galaxy population.
OMAR LOPEZ CRUZ
core  

Photonic Crystal Fibers in the Terahertz Regime: Design Strategies, Performance Metrics, and Emerging Applications: A Systematic Review

Advanced Photonics Research, Volume 7, Issue 4, April 2026.
An optimized octagonal‐core terahertz (THz) photonic crystal fiber sensor is presented for accurate identification of different milk samples based on refractive index variation. The structure enables highly confined THz guidance and strong light–analyte interaction, allowing reliable discrimination of camel, cow, buffalo, and sheep milk.
A. H. M. Iftekharul Ferdous, Ahmmad Musha, Khalid Sifulla Noor   +2 more
wiley   +1 more source

The ALMA Survey of Gas Evolution of PROtoplanetary Disks (AGE-PRO). IV. Dust and Gas Disk Properties in the Upper Scorpius Star-forming Region

The Astrophysical Journal
The Atacama Large Millimeter/submillimeter Array (ALMA) large program AGE-PRO explores protoplanetary disk evolution by studying gas and dust across various ages.
Carolina Agurto-Gangas, Laura M. Pérez, Anibal Sierra, James Miley, Ke Zhang, Ilaria Pascucci, Paola Pinilla, Dingshan Deng, John Carpenter, Leon Trapman, Miguel Vioque, Giovanni P. Rosotti, Nicolas Kurtovic, Lucas A. Cieza, Rossella Anania, Benoît Tabone, Kamber Schwarz, Michiel R. Hogerheijde, Estephani E. TorresVillanueva, Dary A. Ruiz-Rodriguez, Camilo González-Ruilova   +20 more
doaj   +1 more source

The Quest for the Missing Dust. II. Two Orders of Magnitude of Evolution in the Dust-to-gas Ratio Resolved within Local Group Galaxies

The Astrophysical Journal, 2023
We explore evolution in the dust-to-gas ratio with density within four well-resolved Local Group galaxies—the LMC, SMC, M31, and M33. We do this using new Herschel maps, which restore extended emission that was missed by previous Herschel reductions ...
Christopher J. R. Clark, Julia C. Roman-Duval, Karl D. Gordon, Caroline Bot, Matthew W. L. Smith, Lea M. Z. Hagen   +5 more
doaj   +1 more source

Design and mechanical characteristics analysis of low temperature dewar for submillimeter wave receiver

上海师范大学学报. 自然科学版, 2023
The low-temperature receiver is the detection terminal of the submillimeter telescope, which aims to receive the extremely weak submillimeter signals from the universe, and to promote research on the early universe, distant galaxies, and galaxy formation
LI Yao, WANG Boxun, CHEN Minran, CAO Duo, ZHANG Yi, LIU Feng, SHI Wangzhou   +6 more
doaj   +1 more source

The effect of early diagenetic processes on the quantification of fossil micrometeorite abundance and flux in the geological record

Meteoritics &Planetary Science, Volume 61, Issue 4, Page 551-564, April 2026.
Abstract Fossil micrometeorites (MMs) recovered from lithified sedimentary rocks, particularly iron‐rich (I‐type) cosmic spherules (CSs) provide valuable insights into past dust‐forming events. Their abundances, when combined with estimates of local sedimentation rates can be used to reconstruct the flux of extraterrestrial dust.
Isabelle S. Mattia, Matthew J. Genge, Martin D. Suttle   +2 more
wiley   +1 more source

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

, 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., Zinchenko, I. I.   +1 more
core  

Hydrogen Cyanide in Comet C/2022 E3 (ZTF) from 3.4 mm Wave Spectra

The Astronomical Journal
The composition inside a comet nuclear can be detected through the molecular rotational emission lines at millimeter or submillimeter wavelengths.
Juncen Li, Jianchun Shi, Yuehua Ma, Jixian Sun   +3 more
doaj   +1 more source

First Principles Rovibronic Absorption Spectra of HF Molecule

Journal of Computational Chemistry, Volume 47, Issue 6, March 5, 2026.
Hydrogen fluoride (HF) is astrophysically important, as it has been detected in sunspots, Venus, red giants, and the interstellar medium, serving as a probe of exoplanet atmospheres. This article presents an ab initio investigation of HF rovibronic spectroscopy, combining high‐level electronic‐structure data with nuclear‐motion solutions and refinement
Nariman Abu El Kher, Maha Shibli, Mahmoud Korek, Sergei N. Yurchenko, Jonathan Tennyson, Nayla El‐Kork   +5 more
wiley   +1 more source