Results 81 to 90 of about 104,360 (261)
Plasma turbulence in the interstellar medium [PDF]
Plasma Physics and Controlled Fusion, 2019 The interstellar medium is a multi-phase, magnetized, and highly turbulent medium. In this paper, we address both theoretical and observational aspects of plasma turbulence in the interstellar medium. We successively consider radio wave propagation through a plasma and radio polarized emission.
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Radio Science, Volume 60, Issue 8, August 2025.Abstract A space‐borne radio‐frequency antenna is typically located in the vicinity of a conductive spacecraft body that influences its beam. Also, at wavelengths that greatly exceed the sizes of such an antenna and spacecraft, the antenna is expected to have the beam of an equivalent short dipole.
Brent Page +3 more
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Journal of Geophysical Research: Space Physics, Volume 130, Issue 8, August 2025.Abstract The flux of galactic cosmic rays (GCRs) is modulated by solar activity on different time scales. This is often described with the force‐field approximation via the single variable parameters of the modulation parameter, which formally corresponds to the average rigidity loss of GCR particles in the heliosphere. The force‐field approximation is
Pauli Väisänen +5 more
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ORGANIC DUST IN THE INTERSTELLAR MEDIUM [PDF]
Publications of The Korean Astronomical Society, 2014 The traditional view of dust in the interstellar medium is that it is made of graphite and silicates. In this paper, we discuss the evidence for complex organics being a major component of interstellar dust. Comparison between astronomical infrared spectra and laboratory spectra of amorphous carbonaceous materials suggests that organics of mixed ...
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Mapping adsorption on ionic surfaces via a pairwise potential‐based high‐throughput approach
Journal of Applied Crystallography, Volume 58, Issue 4, Page 1462-1468, August 2025.This work presents a high‐throughput method for predicting molecular adsorption sites on ionic surfaces using pairwise Coulomb and Lennard–Jones potentials. Requiring only a CIF as input, the approach enables rapid identification of stable adsorption structures, offering an efficient pathway for studying complex surface–adsorbate interactions ...
Eric Mates-Torres +2 more
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Journal of Computational Chemistry, Volume 46, Issue 20, July 30, 2025.A novel method demonstrates the numerical equivalence of adiabatic and diabatic representations in N‐state coupled diatomic systems. This crucial finding provides an efficient and accurate way to assess the importance of non‐adiabatic effects, which are often disregarded without rigorous quantitative checks.
Ryan P. Brady, S. N. Yurchenko
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The presence of dust in the general interstellar medium is inferred from the extinction, polarization, and scattering of starlight; the presence of dark nebulae; interstellar depletions; the observed infrared emission around certain stars and various ...
Dwek, E.
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Angewandte Chemie, Volume 137, Issue 31, July 28, 2025.Ein neuer Bildungsweg für polyzyklische aromatische Stickstoffheterozyklen (PANH) wurde gefunden. Die Reaktion von Phenylnitren mit dem Propargylradikal führt zu Chinolin und belegt, dass Nitrene geeignete Vorläufer zum Einbau von Stickstoffheteroatomen sind.
Rahel Arns +6 more
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The Astrophysical JournalMagnetar is proposed as one of the possible central engines for a gamma-ray burst (GRB). Recent studies show that if a magnetar has a rotational axis misaligned from the magnetic one, a periodic lightcurve pattern is expected with a period of seconds to ...
Le Zou, Ji-Gui Cheng
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Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles?
Angewandte Chemie International Edition, Volume 64, Issue 31, July 28, 2025.A new formation pathway for polycyclic aromatic nitrogen heterocycles (PANHs) has been found. The reaction of phenylnitrene and the propargyl radical leads to quinoline, proving that nitrenes are suitable precursors for nitrogen incorporation mechanisms.
Rahel Arns +6 more
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