Results 81 to 90 of about 25,001 (219)

Dynamically dominant magnetic fields in the diffuse interstellar medium

open access: yes, 2009
Observations show that magnetic fields in the interstellar medium (ISM) often do not respond to increases in gas density as would be naively expected for a frozen-in field. This may suggest that the magnetic field in the diffuse gas becomes detached from
A. Shukurov   +5 more
core   +1 more source

Full-sky Models of Galactic Microwave Emission and Polarization at Subarcminute Scales for the Python Sky Model

open access: yesThe Astrophysical Journal
Polarized foreground emission from the Galaxy is one of the biggest challenges facing current and upcoming cosmic microwave background (CMB) polarization experiments.
The Pan-Experiment Galactic Science Group   +17 more
doaj   +1 more source

Heteroatom-doped hydrogenated amorphous carbons, a-C:H:X 'Volatile' silicon, sulphur and nitrogen depletion, blue photoluminescence, diffuse interstellar bands and ferro-magnetic carbon grain connections (Research Note)

open access: yes, 2013
Context. Hydrogenated amorphous carbons, a-C:H, can incorporate a variety of heteroatoms, which can lead to interesting effects. Aims. To investigate the doping of interstellar a-C:H grains with, principally, Si, O, N and S atoms within the astrophysical
Jones, A. P.
core   +1 more source

Detection of Interstellar C_2 and C_3 in the Small Magellanic Cloud [PDF]

open access: yes, 2012
We report the detection of absorption from interstellar C_2 and C_3 toward the moderately reddened star Sk 143, located in the near 'wing' region of the SMC, in optical spectra obtained with the ESO VLT/UVES.
Black, John H.   +3 more
core   +2 more sources

Surface hydrogenation in diffuse and translucent interstellar clouds [PDF]

open access: yesAstronomy & Astrophysics, 2002
We investigate the eects of grain-surface hydrogenation reactions on gas phase chemical models of diuse and translucent clouds in the interstellar medium. Models in which gas phase species freeze out on to dust without release do not match observed column densities well. Expanding on previous work we extend our models to include the release of C, N, O,
O'Neill P.T., Viti S., Williams D.A.
openaire   +2 more sources

Interstellar Migration, the Population ‘Problem’ and the Climate Emergency

open access: yes
Critical Quarterly, Volume 68, Issue 1, Page 103-119, April 2026.
Anna Hartnell
wiley   +1 more source

Kinetics and Thermodynamics of Tautomerization Reactions of 1,1‐ and 1,2‐Ethenediols

open access: yesInternational Journal of Chemical Kinetics, Volume 57, Issue 12, Page 687-696, December 2025.
ABSTRACT Tautomerism is a common phenomenon amongst organic molecules with easily interconvertible isomers, which can impact drug action and toxicity. Here we are interested in the enols of carboxylic acids, which are known to be much less stable than their acid counterparts.
Judith Würmel, John M. Simmie
wiley   +1 more source

Chlorine in dense interstellar clouds - The abundance of HCl in OMC-1 [PDF]

open access: yes, 1985
We report the first detection of a chlorine-bearing molecular species in the interstellar medium via emission from the J = 1 → 0 transition of HCl at 625.9 GHz toward OMC-1.
Blake, Geoffrey A.   +2 more
core   +1 more source

Characterizing the 3D Structure of Molecular Cloud Envelopes in the Cloud Factory Simulations

open access: yesThe Astrophysical Journal
We leverage recent numerical simulations of highly resolved star-forming regions in a Milky Way–like galaxy to explore the nature of extended gaseous envelopes around molecular clouds.
Elijah Mullens   +3 more
doaj   +1 more source

On the formation of density filaments in the turbulent interstellar medium [PDF]

open access: yes, 2019
This study is motivated by recent observations on ubiquitous interstellar density filaments and guided by modern theories of compressible magnetohydrodynamic (MHD) turbulence. The interstellar turbulence shapes the observed density structures.
Ji, Suoqing, Lazarian, A., Xu, Siyao
core   +2 more sources

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