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Scatter broadening of compact radio sources by the ionized intergalactic medium: Prospects for detection with Space VLBI and the SKA
J. Y. Koay, J. -P. Macquart
We investigate the feasibility of detecting and probing various components of the ionized intergalactic medium (IGM) and their turbulent properties at radio frequencies through obs…
Temporal Smearing of Transient Radio Sources by the Intergalactic Medium
Jean-Pierre Macquart, Jun-Yi Koay
The temporal smearing of impulsive radio events at cosmological redshifts probes the properties of the ionized Inter-Galactic Medium (IGM). We relate the degree of temporal smearin…
The Micro-Arcsecond Scintillation-Induced Variability (MASIV) Survey III. Optical Identifications and New Redshifts
Tapio Pursimo, Roopesh Ojha, David L. Jauncey +7
Intraday variability (IDV) of the radio emission from active galactic nuclei is now known to be predominantly due to interstellar scintillation (ISS). The MASIV (The Micro-Arcsecon…
Why Do Compact Active Galactic Nuclei at High Redshift Scintillate Less?
J. Y. Koay, J. -P. Macquart, B. J. Rickett +7
The fraction of compact active galactic nuclei (AGNs) that exhibit interstellar scintillation (ISS) at radio wavelengths, as well as their scintillation amplitudes, have been found…
Dual-Frequency Observations of 140 Compact, Flat-Spectrum Active Galactic Nuclei for Scintillation-Induced Variability
J. Y Koay, J. -P. Macquart, B. J. Rickett +7
The 4.9 GHz Micro-Arcsecond Scintillation-Induced Variability (MASIV) Survey detected a drop in Interstellar Scintillation (ISS) for sources at redshifts z > 2, indicating an appar…