Results 41 to 50 of about 41,542 (217)

DESTRUCTION OF THE INTERSTELLAR CLOUDS BY THESHOCK WAVES

Odessa Astronomical Publications, 2008
We study the influence of the interstellar cloud structure irregularity on the dynamics of its destruction by a supernova shock wave. It is shown that irregular clouds are destroyed twice quickly as the spherical ones.
E. E. Matvienko, Yu. A. Shchekinov
doaj   +1 more source

Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles?

Angewandte Chemie International Edition, EarlyView.
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, Rory McClish, Patrick Hemberger, Andras Bodi, Jordy Bouwman, Tina Kasper, Domenik Schleier   +6 more
wiley   +1 more source

Magnetic Fields in Giant Filaments Probed by the Velocity Gradient Technique: Regular Magnetic Field Interrupted by Magnetization Gaps

The Astrophysical Journal
We study the magnetic field structures in six giant filaments associated with the spiral arms of the Milky Way by applying the velocity gradient technique (VGT) to the ^13 CO spectroscopic data from the GRS, FUGIN, and SEDIGSM surveys.
Mengke Zhao, Guang-Xing Li, Jianjun Zhou, Xindi Tang, Jarken Esimbek, Yuxin He, Dalei Li, Weiguang Ji, Zhengxue Chang, Kadirya Tursun   +9 more
doaj   +1 more source

A Slowly Pulsating Run‐Away B Star at High Galactic Latitude Ejected From a Spiral Arm

Astronomische Nachrichten, Volume 346, Issue 5, June 2025.
ABSTRACT We report the discovery of the young B6 V run‐away star LAMOST J083323.18 + 430825.4, 2.5 kpc above the Galactic plane. Its atmospheric parameters and chemical composition are determined from LAMOST spectra, indicating normal composition. Effective temperature (Teff$$ {T}_{\mathrm{eff}} $$ = 14,500$$ \mathrm{14,500} $$ K) and gravity (logg ...
Ulrich Heber, Maximilian Halenke, Aakash Bhat, Veronika Schaffenroth   +3 more
wiley   +1 more source

Global dynamics of the interstellar medium in magnetized disc galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2019
ABSTRACTMagnetic fields are an elemental part of the interstellar medium in galaxies. However, their impact on gas dynamics and star formation in galaxies remains controversial. We use a suite of global magnetohydrodynamic simulations of isolated disc galaxies to study the influence of magnetic fields on the diffuse and dense gas in the discs.
Bastian Körtgen, Robi Banerjee, Ralph E Pudritz, Wolfram Schmidt   +3 more
openaire   +3 more sources

Orbital evolution under action of fast interstellar gas flow

, 2010
Orbital evolution of an interplanetary dust particle under action of an interstellar gas flow is investigated. Secular time derivatives of the particle orbital elements, for arbitrary orbit orientation, are presented. An important result concerns secular
Abalakin, Bahcall, Baines, Banaszkiewicz, Belyaev, Bruno, Danby, Debes, Fahr, Fechtig, Gurnett, Hines, J. Klačka, Klačka, Klačka, Klačka, Klačka, Kuchner, L. Kómar, Landgraf, Landgraf, Lee, Liou, Liou, Murray, Möbius, P. Pástor, Richardson, Scherer, Wyatt, Šidlichovský   +30 more
core   +1 more source

Tracing Magnetic Fields with the Gradient Technique: Spatial Filtering Effect and Use of Interferometers

The Astrophysical Journal
Probing magnetic fields in astrophysical environments is both important and challenging. The Gradient Technique (GT) is a new tool for tracing magnetic fields, rooted in the properties of magnetohydrodynamic (MHD) turbulence and turbulent magnetic ...
Yue Hu, A. Lazarian
doaj   +1 more source

Open problems and perspectives offered by current and future instruments

EPJ Web of Conferences, 2012
We summarize recent observational and theoretical results and discuss the open challenges for astrochemistry and the promises offered by the current and upcoming instruments. Some of the main challenges are listed below. Characterization of the structure
Gérin M.
doaj   +1 more source

Energy Landscapes in Chemical Reactions and Transport

ChemPhysChem, Volume 26, Issue 6, March 15, 2025.
Kinetics/dynamics of chemical reactivity and transport of chemical species in a solid are both determined by the energy landscape in which they take place. Discussing common grounds but also distinct differences may help in advancing the understanding in both fields.
Karl‐Michael Weitzel
wiley   +1 more source

Magnetic reconnection detonation in supernova remnants

, 2018
As a key process that refreshes the interstellar medium, the dynamics and radiative properties of the supernova remnant (SNR) expansion front not only reflect the physical environment of the old interstellar medium (ISM) surrounding the supernova, but ...
Gao, Yang, Law, Chung K., Zhang, Horace
core   +1 more source