Results 1 to 10 of about 1,202,357 (201)
Interstellar scattering as a cosmological probe
2011 XXXth URSI General Assembly and Scientific Symposium, 2011 Since the discovery that the flux densities of very compact astrophysical sources are modulated by scattering in the inhomogeneous, ionized interstellar medium (ISM) of our own Galaxy through a phenomenon known as Interstellar Scintillation (ISS), these ...
Hayley Bignall +2 more
exaly +3 more sources
Journal of Chemical Physics, 2021 Rotational excitation of interstellar PN molecules induced by collisions with H2 is investigated. We present the first ab initio four-dimensional potential energy surface (PES) for the PN-H2 van der Waals system.
Benjamin Desrousseaux +2 more
exaly +2 more sources
Interstellar Absorption and Dust Scattering
, 2023 Invited chapter for the "handbook of X-ray and Gamma-ray Astrophysics" (Eds. C. Bambi and A. Santangelo, Springer Singapore, 2022).
Elisa Costantini
exaly +4 more sources
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 ...
David L. Jauncey +9 more
doaj +3 more sources
Interstellar scattering of the Vela pulsar
The Astrophysical Journal, 1974 The frequency dependence of the parameters of interstellar scattering between 837 and 8085 MHz for the Vela pulsar are consistent with thin-screen models of strong scattering. The magnitudes of the parameters indicate an anomalous turbulence along the path when they are compared with results for other pulsars with comparable column densities of free ...
D. Backer
semanticscholar +2 more sources
On the Enhanced Interstellar Scattering toward B1849+005 [PDF]
The Astrophysical Journal, 2004 This paper reports new Very Large Array (VLA) and Very Long Baseline Array (VLBA) observations of the extragalactic source B1849+005 (Galactic coordinates ℓ = 33.°44, b = +0.°21) at frequencies between 0.33 and 15 GHz and the reanalysis of archival VLA ...
T. Lazio
semanticscholar +4 more sources
IMPROVING PULSAR DISTANCES BY MODELLING INTERSTELLAR SCATTERING [PDF]
Monthly Notices of the Royal Astronomical Society, 1998 We present here a method to study the distribution of electron density fluctuations in pulsar directions as well as to estimate pulsar distances. The method, based on a simple two-component model of the scattering medium discussed by Gwinn, Bartel &38 ...
A. Deshpande +7 more
semanticscholar +5 more sources
Interstellar X-Ray Absorption and Scattering
The Astrophysical JournalAccurate estimates of the absorption of X-rays by interstellar gas and dust are of crucial importance for the analysis and interpretation of almost all astronomical soft X-ray observations.
Linli Yan, Aigen Li, Fangjun Lu
doaj +3 more sources
Some Scattering Problems of Interstellar Grains [PDF]
Symposium - International Astronomical Union, 1973 Some general effects of size, shape, and material on the scattering properties of small particles are considered with a view to determining their relative importance to interstellar dust interpreatations.
Greenberg J Mayo, J Mayo Greenberg
exaly +2 more sources
Pulsar Scattering as a Probe for Structures in the Interstellar Medium
The Astrophysical JournalDue to the inhomogeneity of electron number density, radio waves emitted by pulsars undergo scattering as they pass through the interstellar medium (ISM).
Qiuyi He, Xun Shi, Guangxing Li
doaj +3 more sources