173 citations · 832 across the 27 of their papers we have counts for
6 papers · 1 filter
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…
Structural variability of 3C 111 on parsec scales
C. Großberger, M. Kadler, J. Wilms +15
We discuss the parsec-scale structural variability of the extragalactic jet 3C 111 related to a major radio flux density outburst in 2007. The data analyzed were taken within the s…
The gamma-ray properties of radio-selected extragalactic jets
M. Boeck, M. Kadler, G. Tosti +4
Most extragalactic jets in radio-loud Active Galactic Nuclei are bright and variable gamma-ray sources, which are continuously monitored with Fermi/LAT. We present the gamma-ray pr…
VLBI Monitoring of the bright gamma-ray blazar PKS 0537-441
Faith Hungwe, Roopesh Ojha, Matthias Kadler +6
One of the defining characteristics of BL Lacertae objects is their strong variability across the electromagnetic spectrum. PKS 0537-441 is one such object and is one of the most l…
TANAMI: Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry I. First-Epoch 8.4 GHz Images
Roopesh Ojha, Matthias Kadler, Moritz Böck +24
We introduce the TANAMI program (Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry) which is monitoring an initial sample of 43 extragalactic jets located…
Multiwavelength campaign of the gamma-ray flaring source PKS 2052-47
C. S. Chang, E. Ros, M. Kadler +4
The flat-spectrum radio quasar PKS 2052-47 experienced an optical flare in July-August, 2009. On August 9, the LAT detector onboard Fermi observed a flare from the source, which re…