Results 41 to 50 of about 501,439 (210)

On the Stability of Interstellar Neutral Hydrogen Clouds at Large Z-heights

The Astrophysical Journal
Galactic neutral hydrogen (H i ) data drawn from several large-scale surveys have been used to study 32 small clouds found between Galactic longitudes 70° and 140° and latitudes −20° and −45°.
G. L. Verschuur
doaj   +1 more source

The Rich Chemistry of Ionized Methanol With Sulfur Dioxide: Pathways to Prebiotic and Elusive Species in Earth's Atmosphere and Space

Chemistry – A European Journal, Volume 32, Issue 39, 22 October 2026.
The reaction between the methanol radical cation and sulfur dioxide is remarkably fast and forms several ionic and neutral products (HOSOH+, CH2OSO+, CH2OH+, CH2O, H2O, HSO2). The chemistry goes beyond simple proton or hydrogen transfer, revealing a close interaction between the two species, relevant to atmospheric and astrochemical environments where ...
Mauro Satta, Daniele Catone, Mattea Carmen Castrovilli, Antonella Cartoni   +3 more
wiley   +1 more source

Disclosing Identities in Diffuse Interstellar Bands

, 2011
The linear isomer of C 3 H 2 has been proposed as the source of broad absorption bands in diffuse interstellar clouds, but it is still being debated.
Benjamin J. McCall, Takeshi Oka
core   +1 more source

Large molecules in diffuse interstellar clouds

The Astrophysical Journal, 1988
The effects of the presence of a substantial component of large molecules on the chemistry of diffuse molecular clouds are explored, and detailed models of the zeta Persei and zeta Ophiuchi clouds are constructed. The major consequence is a reduction in the abundances of singly charged atomic species.
Lepp, S., Dalgarno, A., Dishoeck, E.F. van, Black, J.H.   +3 more
openaire   +3 more sources

Features of Ground Level Enhancement (GLE #74) Event on 11 May 2024

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract Ground Level Enhancement (GLE #74) occurred on 11 May 2024 following an X5.8 solar flare from active region AR 13668 and the associated halo coronal mass ejection. The event was observed by both ground‐based neutron monitors (NMs) and space‐borne instruments and occurred during a deep Forbush decrease and one of the strongest geomagnetic ...
Alexander Mishev, Nicholas Larsen, Sergey Koldobskiy, Hishashi Hayakawa, Yusuke Ebihara, Ilya Usoskin   +5 more
wiley   +1 more source

The formation of molecular hydrogen in the interstellar medium [PDF]

, 2010
H2 is the most abundant molecule in the interstellar medium and forms on the surface of interstellar dust grains. Laboratory studies have been conducted of HD formation on a dust grain analogue, which is a highly-oriented pyrolytic graphite surface ...
Islam, F.
core  

The H2 Glow of a Quiescent Molecular Cloud Observed with JWST

The Astrophysical Journal Letters
We report JWST MIRI/MRS observations of the H _2 S (1) 17.04 μ m transition in two regions in the boundary of the Taurus molecular cloud. The two regions, denoted “Edge” (near the relatively sharp boundary of the ^13 CO J  = 1 → 0 emission) and “Peak ...
Paul F. Goldsmith, Shengzhe Wang, Xin Wang, Raphael Skalidis, Gary A. Fuller, Di Li, Chao-Wei Tsai, Lile Wang, Donghui Quan   +8 more
doaj   +1 more source

Molecular filming: A director's grammar for visualizing chemistry in motion

Bulletin of the Korean Chemical Society, Volume 47, Issue 9, Page 1042-1057, September 2026.
Molecular filming names the practice, not just the product, of ultrafast structural science. In deliberate analogy to molecular editing, which rewrites connectivity in space, molecular filming records geometry in time, assembling time‐ordered structural frames into a movie of atomic motion and recasting the field as a grammar of directorial choices ...
Hyotcherl Ihee
wiley   +1 more source

Evidence for Spatially Distinct Galactic Dust Populations

The Astrophysical Journal
We present an implementation of a Bayesian mixture model using Hamiltonian Monte Carlo techniques to search for the spatial separation of Galactic dust populations. Utilizing intensity measurements from the Planck High Frequency Instrument, we apply this
Corwin Shiu, Steven J. Benton, Jeffrey P. Filippini, Aurélien A. Fraisse, William C. Jones, Johanna M. Nagy, Ivan L. Padilla, Juan D. Soler   +7 more
doaj   +1 more source

An Instrument for Isomer‐Specific Action Spectroscopy of Charged Clusters: Electronic Spectra of C 14 + and Ca@C 60 +

Chemistry–Methods, Volume 6, Issue 8, August 2026.
Disentangling spectral congestion of a mixture of isomers in gas‐phase spectroscopy is critical. We present an instrument combining ion mobility, mass spectrometry, and spectroscopy in a cryogenic 3D Paul trap to investigate the isomer‐specific charged clusters and illustrate its performance with the electronic spectra of C14+ and Ca@C60+. Interpreting
Corentin Rossi, Anne P. Rasmussen, Zekai Li, Uma Namangalam, Bérenger Gans, Juraj Jašík, Jan Žabka, Hugo Bauduin, Christophe Charrière, Vira Davouloury, Jean‐Philippe Dugal, Jérome Guigand, Catherine Le Bris, Ugo Jacovella   +13 more
wiley   +1 more source