Results 1 to 10 of about 181 (162)
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
The Origin of Radio Scintillation in the Local Interstellar Medium [PDF]
Astrophysical Journal, 2008 16 pages, 5 figures; Accepted for publication in ...
Seth Redfield, Jeffrey Linsky
exaly +4 more sources
Interstellar scintillation of an extreme scintillator: PKS B1144−379 [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT The University of Tasmania Ceduna radio telescope has been used to investigate rapid variability in the radio flux density of the BL Lac object PKS B1144−379 at 6.7 GHz. High-cadence monitoring of this extreme scintillator was carried out over a period of approximately 9 yr, between 2003 and 2011.
N M M Said +5 more
openaire +2 more sources
Lévy Model for Interstellar Scintillations [PDF]
Physical Review Letters, 2003 4 pages, 3 ...
Boldyrev, Stanislav, Gwinn, Carl R.
openaire +3 more sources
On Detecting Interstellar Scintillation in Narrowband Radio SETI
The Astrophysical Journal, 2023 To date, the search for radio technosignatures has focused on sky location as a primary discriminant between technosignature candidates and anthropogenic radio frequency interference (RFI).
Bryan Brzycki +6 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
Interstellar scintillation of PSR J0437–4715 [PDF]
Astronomy & Astrophysics, 2006 We studied the turbulence spectrum of the local interstellar plasma in the direction of PSR J0437-4715, on the basis of our observations and those reported earlier by others. We combine these data to form a structure function for the variations of phase along the line of sight to the pulsar.
Smirnova, T. V. +2 more
openaire +2 more sources
Pulsar Investigation Using Interstellar Scintillation [PDF]
International Astronomical Union Colloquium, 2001 AbstractWe discuss the resolution of pulsar magnetospheres using interstellar scintillation. The two-dimensional spatial structure of pulsar emission zones can be obtained from analysis of diffractive scintillations at low frequencies. Based on refractive and diffractive scintillation of pulsars we can also reconstruct the distribution of turbulent ...
T.V. Smirnova, V.I. Shishov
openaire +1 more source
Interstellar Scintillation of Radio Sources as a Probe for Investigations of the Local Interstellar Medium [PDF]
International Astronomical Union Colloquium, 1997 AbstractA possibility of obtaining information on small scale inhomogeneities of the electron component of the local interstellar medium (LISM) is investigated using interstellar scintillations of extragalactic radio sources. We analyse Culgoora array observational data on variability of 190 extragalactic radio sources, covering most of the sky, at 80 ...
N. G. Bochkarev, M. I. Ryabov
openaire +1 more source
Interstellar Scintillation and Clouds of the Interstellar Turbulent Plasma [PDF]
International Astronomical Union Colloquium, 2001 AbstractData on interstellar diffraction and refraction scintillation of pulsars are analyzed. Comparison between theory and the observational data shows that two types of spectra for electron density fluctuations are realized in the interstellar medium: pure power law and piecewise with a break. The distribution of turbulent plasma in the Galaxy has a
openaire +2 more sources