Interstellar Scintillation and Scattering of Micro-arc-second AGN
Galaxies, 2016 The discovery of the first quasar 3C 273 led directly to the discovery of their variability at optical and radio wavelengths. We review the radio variability observations, in particular the variability found at frequencies below 1 GHz, as well as those ...
James Lovell +2 more
exaly +3 more sources
Scattering Delay Mitigation in High-accuracy Pulsar Timing: Cyclic Spectroscopy Techniques
The Astrophysical Journal, 2023 We simulate scattering delays from the interstellar medium to examine the effectiveness of three estimators in recovering these delays in pulsar timing data. Two of these estimators use the more traditional process of fitting autocorrelation functions to
Jacob E. Turner +5 more
doaj +1 more source
Constraints on the IBEX Ribbon’s Origin from Its Evolution over a Solar Cycle
The Astrophysical Journal, 2023 In 2009, the Interstellar Boundary Explorer (IBEX) discovered a narrow “ribbon” of energetic neutral atom emissions across the sky with properties correlated with the solar wind latitudinal structure and the interstellar magnetic field draped around the ...
E. J. Zirnstein +3 more
doaj +1 more source
The Astrophysical Journal, 2023 Scintillation of pulsar radio signals caused by the interstellar medium can in principle be used for interstellar interferometry. Changes in the dynamic spectra as a function of pulsar longitude were in the past interpreted as having spatially resolved ...
M. V. Popov +8 more
doaj +1 more source
High‐Pressure Carbonaceous Phases as Minerals
Geophysical Monograph Series, Page 11-23., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Oliver Tschauner
wiley +1 more source
Quantum Dynamics of Rotational Transitions in CN (X2Σ+) by H+ Collisions
Frontiers in Chemistry, 2021 Collisional cross-sections of inelastic rotational excitations of CN in its ground electronic state (X2Σ+) by H+ scattering are studied by the exact quantum mechanical close-coupling (CC) method at very low collision energies (0–600 cm−1) relevant to ...
Bhargava Anusuri +2 more
doaj +1 more source
The Astrophysical Journal, 2023 The cosmic dust particles found in space are mainly porous aggregates of smaller grains. Theoretically, these aggregates are replicated using fractal geometry, assuming a cluster of spheres.
Prithish Halder, Sujan Sengupta
doaj +1 more source
Diagnostics from Polarization of Scattered Optical Light from Galactic Infrared Cirrus
The Astrophysical Journal, 2023 We propose polarization of scattered optical light from intermediate Galactic latitude infrared cirrus as a new diagnostic to constrain models of interstellar dust and the anisotropic interstellar radiation field (aISRF).
Shannon K. Bowes, Peter G. Martin
doaj +1 more source
Turbulence Driving by Interstellar Pickup Ions in the Outer Solar Wind
The Astrophysical Journal, 2023 We revisit the question of how the unstable scattering of interstellar pickup ions (PUIs) may drive turbulence in the outer solar wind and why the energy released into fluctuations by this scattering appears to be significantly less than the standard ...
Philip A. Isenberg +2 more
doaj +1 more source
The Astrophysical Journal, 2023 Interstellar neutral (ISN) helium atoms penetrating the heliosphere are used to find the flow velocity and temperature of the very local interstellar medium near the heliosphere.
P. Swaczyna +3 more
doaj +1 more source