Results 41 to 50 of about 104,360 (261)

Theory of interstellar medium diagnostics [PDF]

open access: yes, 1983
The theoretical interpretation of observed interplanetary resonance luminescence patterns is used as one of the must promising methods to determine the state of the local interstellar medium (LISM).
Fahr, H. J.
core   +1 more source

Eyes in the sky: Interactions between AGB winds and the interstellar magnetic field [PDF]

open access: yes, 2014
We aim to examine the role of the interstellar magnetic field in shaping the extended morphologies of slow dusty winds of Asymptotic Giant-branch (AGB) stars in an effort to pin-point the origin of so-called eye shaped CSE of three carbon-rich AGB stars.
Cox, N. L. J.   +2 more
core   +1 more source

Quenching and Recovery of Persistent X-Ray Emission during a Superburst in 4U 1820–30

open access: yesThe Astrophysical Journal
We report the superburst from 4U 1820–30 in 2021 observed by the Monitor of All-sky X-ray Image and Neutron star Interior Composition Explorer (NICER).
Zhijiao Peng   +8 more
doaj   +1 more source

Charge State Influence on Stability and Isomerism in Dehydrogenated PAHs: Insights from Anthracene, Acridine, and Phenazine

open access: yesChemPhysChem, Volume 26, Issue 6, March 15, 2025.
The ionization of anthracene, acridine, and phenazine has been explored, along with the removal of one and two hydrogen atoms, to provide valuable information for astrochemists and to understand the behavior of the resulting structures and their electronic reorganization. Abstract In this study, we systematically explored the stability and isomerism of
Khaldia Zghida   +3 more
wiley   +1 more source

Deuterium enrichment of the interstellar medium [PDF]

open access: yesNew Astronomy, 2015
Despite low elemental abundance of atomic deuterium in interstellar medium (ISM), observational evidences suggest that several species in gas-phase and in ices could be heavily fractionated. We explore various aspects of deuterium enrichment by constructing a chemical evolution model in gas and grain phases.
Sandip K. Chakrabarti   +4 more
openaire   +3 more sources

Polarisation of submillimetre lines from interstellar medium [PDF]

open access: yes, 2017
Magnetic fields play important roles in many astrophysical processes. However, there is no universal diagnostic for the magnetic fields in the interstellar medium (ISM) and each magnetic tracer has its limitation.
Yan, Huirong, Zhang, Heshou
core   +1 more source

Energy Landscapes in Chemical Reactions and Transport

open access: yesChemPhysChem, 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

SILICATE COMPOSITION OF THE INTERSTELLAR MEDIUM [PDF]

open access: yesThe Astrophysical Journal, 2016
ABSTRACT The composition of silicate dust in the diffuse interstellar medium and in protoplanetary disks around young stars informs our understanding of the processing and evolution of the dust grains leading up to planet formation. An analysis of the well-known 9.7 μm feature indicates that small amorphous silicate grains represent a ...
Shane Fogerty   +5 more
openaire   +4 more sources

Solid H2 in the interstellar medium

open access: yes, 2018
Condensation of H 2 in the interstellar medium (ISM) has long been seen as a possibility, either by deposition on dust grains or thanks to a phase transition combined with self-gravity.
Füglistaler, Andreas, Pfenniger, Daniel
core   +1 more source

Supersonic turbulence and structure of interstellar molecular clouds [PDF]

open access: yes, 2002
The interstellar medium (ISM) provides a unique laboratory for highly supersonic, driven hydrodynamics turbulence. We present a theory of such turbulence, confirm it by numerical simulations, and use the results to explain observational properties of ...
B. Dubrulle   +28 more
core   +2 more sources

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