Results 111 to 120 of about 658,780 (159)
The Astrophysical Journal LettersWe report the first unambiguous detection of refractive substructure in an active galactic nucleus (AGN) using ground-based very long baseline interferometry (VLBI).
A. V. Plavin +2 more
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The Astrophysical JournalWe use Tibet AS γ anisotropy data for 4 TeV cosmic rays to investigate the properties of the pitch-angle focusing and diffusion caused by the interstellar magnetic field and turbulence.
N. D. Maalal, M. Zhang
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Interstellar Scattering Towards the Galactic Center as Probed by OH/IR Stars [PDF]
, 1992 Angular broadening measurements are reported of 20 OH/IR stars near the galactic center. This class of sources is known to have bright, intrinsically compact (less than or equal to 20 mas) maser components within their circumstellar shells. VLBA antennas
Vanlangevelde, Huib Jan +3 more
core
Interstellar Absorption and Dust Scattering [PDF]
The study of the interstellar medium (ISM) in the X-rays has entered a golden age with the advent of the X-ray observatories XMM-Newton and Chandra. High-energy resolution allowed to study dust spectroscopic features with unprecedented detail.
Costantini, E.; id_orcid, Corrales, L.
core +1 more source
Positron scattering from interstellar phosphorus-bearing compounds
RSC AdvancesThis article reports an investigation of positron impact scattering from several phosphorus-bearing compounds detected in the interstellar medium.
Irabati Chakraborty +2 more
openaire +2 more sources
Modeling the Optical Colors of Galactic Cirrus Clouds in the Stripe 82 Region
The Astronomical JournalObservations have shown that the optical colors of Galactic cirrus clouds differ significantly from those of extragalactic sources; thus, they can be used to distinguish Galactic cirrus from extragalactic low surface brightness (LSB) features.
Kwang-Il Seon +4 more
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Frontiers in Astronomy and Space SciencesCollisional excitation in reactive systems plays a central role in astrochemistry. Accurate state-to-state rate coefficients are key parameter for the determination of excitation conditions of interstellar molecules with the most abundant species in ...
Paul Pirlot Jankowiak
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A Multilayer Perceptron to Extend and Improve Diatomic Molecule Collision Rate Coefficients
The Astrophysical JournalA data-driven approach to improve the accuracy of state-resolved molecular collision data for the relaxation of vibrationally and rotationally excited molecules is developed.
Ruihan Wang +7 more
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Pitch-angle Scattering of Cosmic Rays: Confronting Theory with Observations
The Astrophysical Journal LettersCosmic ray (CR) propagation is controlled by scattering in turbulent magnetic fields in space. In general, diffusive propagation is governed by pitch-angle diffusion in phase space.
Huirong Yan, Siqi Zhao, Ming Zhang
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International audienceRecent astronomical observations [1,2] have shown that chloronium (H2Cl+) is an important intermediate in Cl-chemistry of the interstellar medium (ISM) due to its specific thermodynamic properties. For a proper interpretation of the
Lique, François +3 more
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