Results 11 to 20 of about 79,833 (199)
Interstellar Scintillation and Scattering of Micro-arc-second AGN [PDF]
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 +6 more sources
Single-pulse-based Interstellar Scintillation Studies of RRATs
Astrophysical Journal LettersThe nature of irregularly spaced pulses of rotating radio transients (RRATs) complicates interstellar scintillation studies. In this Letter, we report the primary scintillation parameters of a sample of RRATs using pairwise correlations of pulse spectra.
Zi-wei Wu +18 more
exaly +3 more sources
On Detecting Interstellar Scintillation in Narrowband Radio SETI [PDF]
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 +2 more sources
The Origin of Radio Scintillation in the Local Interstellar Medium [PDF]
The Astrophysical Journal, 2008 16 pages, 5 figures; Accepted for publication in ...
Linsky, Jeffrey L. +2 more
openaire +5 more sources
Simulation of optical interstellar scintillation [PDF]
Astronomy & Astrophysics, 2013 Stars twinkle because their light propagates through the atmosphere. The same phenomenon is expected on a longer time scale when the light of remote stars crosses an interstellar turbulent molecular cloud, but it has never been observed at optical wavelengths.
Habibi, F. +3 more
openaire +4 more sources
Pulsar Scintillation and Interstellar Lenses
, 2023 The radio emission of pulsars is scattered within the interstellar medium due to variations of the electron column density. Pulsars are very compact sources of pulsed radiation and, thus, emit spatially coherent radiation leading to observable interference of scattered paths. The corresponding amplitude variations are called scintillation.
Sprenger, Tim
openaire +4 more sources
Refractive scintillation in the interstellar medium
Astrophysical Journal, 1987 It is shown here that the large-scale component of interstellar scintillation which causes the slow variation in the apparent intensity of pulsars on time scales of days to months can be greatly enhanced when the turbulence spectrum has a limiting inner scale of the order 10 to the 9th m.
Wm A Coles, R G Frehlich, B J Rickett
exaly +2 more sources
Liquid and solid scintillation: principles and applications [PDF]
, 2012 Podeu consultar el llibre complet a: http://hdl.handle.net/2445/32166Scintillation counting is one of the most important developments in the application of radioisotopes to procedures needed by scientists, physicians, engineers, and technicians from many
Sánchez García, Cristina +3 more
core +7 more sources
Developments in the use of EISCAT for interplanetary scintillation [PDF]
, 2008 The antennas of EISCAT have been used for interplanetary scintillation (IPS) studies of the solar wind for many years. The main science found from these studies is obtained through the cross-correlation of signals from antennas having the longest ...
Fallows, R. A. +2 more
core +6 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