310 citations · 3.8k across the 79 of their papers we have counts for
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The presence of interstellar scintillation in the 15 GHz interday variability of 1158 OVRO-monitored blazars
J. Y. Koay, D. L. Jauncey, T. Hovatta +8
We have conducted the first systematic search for interday variability in a large sample of extragalactic radio sources at 15 GHz. From the sample of 1158 radio-selected blazars mo…
Detection statistics of the RadioAstron AGN survey
Y. Y. Kovalev, N. S. Kardashev, K. V. Sokolovsky +57
The largest Key Science Program of the RadioAstron space VLBI mission is a survey of active galactic nuclei (AGN). The main goal of the survey is to measure and study the brightnes…
The MASIV Survey IV: relationship between intra-day scintillation and intrinsic variability of radio AGNs
J. Y. Koay, J. -P. Macquart, D. L. Jauncey +8
We investigate the relationship between 5 GHz interstellar scintillation (ISS) and 15 GHz intrinsic variability of compact, radio-selected AGNs drawn from the Microarcsecond Scinti…
PKS 1954-388: RadioAstron Detection on 80,000 km Baselines and Multiwavelength Observations
P. G. Edwards, Y. Y. Kovalev, R. Ojha +24
We present results from a multiwavelength study of the blazar PKS 1954-388 at radio, UV, X-ray, and gamma-ray energies. A RadioAstron observation at 1.66 GHz in June 2012 resulted…
Optical Spectra of Candidate International Celestial Reference Frame (ICRF) Flat-Spectrum Radio Sources. III
O. Titov, T. Pursimo, H. M. Johnston +4
In extending our spectroscopic program, which targets sources drawn from the International Celestial Reference Frame (ICRF) Catalog, we have obtained spectra for about 160 compact…
Detection of Six Rapidly Scintillating AGNs and the Diminished Variability of J1819+3845
J. Y. Koay, H. E. Bignall, J. -P. Macquart +3
The extreme, intra-hour and > 10% rms flux density scintillation observed in AGNs such as PKS 0405-385, J1819+3845 and PKS 1257-326 at cm wavelengths has been attributed to scatter…