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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…
Optical Spectra of Candidate Southern Hemisphere International Celestial Reference Frame (ICRF) radio sources
O. Titov, D. L. Jauncey, H. M. Johnston +2
We present the results of spectroscopic observations of the optical counterparts of 47 southern radio sources from the candidate International Celestial Reference Catalogue (ICRC),…
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…
Deep Multiwaveband Observations of the Jets of 0208-512 and 1202-262
Eric S. Perlman, Markos Georganopoulos, Herman L. Marshall +8
We present deep {\it HST, Chandra, VLA} and {\it ATCA} images of the jets of PKS 0208--512 and PKS 1202--262, which were found in a {\it Chandra} survey of a flux-limited sample of…
An X-ray Imaging Survey of Quasar Jets -- Testing the Inverse Compton Model
H. L. Marshall, J. M. Gelbord, D. A. Schwartz +7
We present results from continued Chandra X-ray imaging and spectroscopy of a flux-limited sample of flat spectrum radio-emitting quasars with jet-like extended structure. X-rays a…