Results 81 to 90 of about 1,203,998 (246)
A detailed study of the reflection nebula, NGC 7023 [PDF]
, 1982 Polarisation and intensity maps in three broad wavebands are presented for the reflection nebula NGC7023. The data are used to investigate the structure, dust distribution and grain characteristics of the material surrounding the central illuminating ...
Moore, Philip Joseph Ruaraigh McDonald
core
Advanced Functional Materials, Volume 36, Issue 61, 30 July 2026.Enhancing crystallinity through thermal annealing leads to amplifying the chiroptical activity of TiO2 nanohelices (NHs) fabricated by glancing angle deposition, ascribed to the suppression of charge trapping. The enhanced chiroptical activity can be converted into pronounced dissymmetric photocatalytic kinetics of circularly polarized photocatalysis ...
Ying Wang +3 more
wiley +1 more source
Low Frequency Interstellar Scattering and Pulsar Observations [PDF]
, 1992 Radio astronomy at frequencies from 2 to 30 MHz challenges time tested methods for extracting usable information from observations. One fundamental reason for this is that propagation effects due to the magnetoionic ionosphere, interplanetary medium, and
Cordes, James M.
core +1 more source
The Astrophysical JournalThe abundance of elements in the interstellar medium is a key facet for many fields of astrophysical study. In the soft X-ray spectra, absorption by interstellar gas can result in deep absorption features that affect continuum measurements. In this paper,
D. L. Moutard +4 more
doaj +1 more source
FINE STRUCTURE OF ANOMALOUSLY INTENSE PULSES OF PSR J0814+7429 RADIO EMISSION IN THE DECAMETER RANGE
Radio Physics and Radio Astronomy, 2017 Purpose: The fine structure of the anomalously intense pulses of PSR J0814+7429 (В0809+74) has been studied. The pulsar radio emission fine structure is investigated to determine its parameters in the lowest part of spectrum available for groundbased ...
A. O. Skoryk +6 more
doaj +1 more source
Joint Modelling of Dust Scattering and Thermal Emission: The Spider Complex
The Astrophysical Journal, 2023 Observations across the electromagnetic spectrum of radiative processes involving interstellar dust—emission, absorption, and scattering—are used to constrain the parameters of dust models and more directly to aid in foreground removal of dust for ...
Jielai Zhang +6 more
doaj +1 more source
Interstellar Scattering And The Einstein Ring PKS 1830-211 [PDF]
Symposium - International Astronomical Union, 1996 The remarkably strong radio gravitational lens PKS 1830-211 consists of a one arcsecond diameter Einstein ring with two bright compact components located on opposite sides of the ring. We have obtained 22 GHz VLBA data on this source to determine the intrinsic angular sizes of the compact components.
D. L. Jones +6 more
openaire +1 more source
Deterministic Propagation of Suprathermal Ions Through the Heliosphere
Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.Abstract The PEPSSI instrument onboard New Horizons is sampling the energy range that bridges pickup and suprathermal He+ ${\mathrm{H}\mathrm{e}}^{+}$ ions for the first time in the outer heliosphere. New Horizons repeatedly encountered structures beyond 30 au that we interpret as the spiral of a corotating interaction region (CIR) for an extended ...
P. Kollmann +12 more
wiley +1 more source
The Astrophysical JournalScattering of stars by interstellar clouds or massive clumps increases the stellar velocity dispersion and promotes a radial disk profile that is exponential.
Curtis Struck +2 more
doaj +1 more source
Earth and Planetary PhysicsResearch on the interstellar medium and its interaction with the solar system constitutes a significant topic in planetary physics. As the Sun traverses the local interstellar cloud, interstellar neutrals penetrate the heliosphere, forming the ...
JiaLing Lyu +3 more
doaj +1 more source