32 citations · 162 across the 13 of their papers we have counts for
13 papers
Subarcsecond view on the high-redshift blazar GB 1508+5714 by the International LOFAR Telescope
A. Kappes, P. R. Burd, M. Kadler +14
Studies of the most distant AGNs allow us to test our current understanding of the physics present in radio-jetted AGNs across a range of environments. The decrease in apparent lum…
Iterative training of robust k-space interpolation networks for improved image reconstruction with limited scan specific training samples
Peter Dawood, Felix Breuer, Paul R. Burd +4
Purpose: To evaluate an iterative learning approach for enhanced performance of Robust Artificial-neural-networks for K-space Interpolation (RAKI), when only a limited amount of tr…
Dual-high-frequency VLBI study of blazar-jet brightness-temperature gradients and collimation profiles
P. R. Burd, M. Kadler, K. Mannheim +3
On the kiloparsec scale, extragalactic radio jets show two distinct morphologies related to their power: collimated high-power jets ending in a bright termination shock and low-pow…
Ambilateral collimation study of the twin-jets in NGC1052
A. -K. Baczko, E. Ros, M. Kadler +6
With the increased sensitivity and resolution of radio interferometry the study of the collimation and acceleration region of jets in Active Galactic Nuclei (AGN) has come into foc…
Statistical properties of flux variations in blazar light curves at GeV and TeV energies
Sarah M. Wagner, Paul R. Burd, Daniela Dorner +23
Despite numerous detections of individual flares, the physical origin of the rapid variability observed from blazars remains uncertain. Using Bayesian blocks and the Eisenstein-Hut…
Ornstein-Uhlenbeck parameter extraction from light curves of Fermi-LAT observed blazars
Paul R. Burd, Luca Kohlhepp, Sarah M. Wagner +3
Context. Monthly-binned gamma-ray light curves of 236 bright gamma-ray sources, particularly blazars, selected from a sample of 2278 high-galactic latitude objects observed with Fe…
Gamma-ray emission in radio galaxies under the VLBI scope -- II. The relationship between gamma-ray emission and parsec-scale jets in radio galaxies
R. Angioni, E. Ros, M. Kadler +22
Following our study of the radio and high-energy properties of -ray-emitting radio galaxies, here we investigate the kinematic and spectral properties of the parsec-scale jets o…
Calibrating the power of relativistic jets
L. Foschini, M. L. Lister, T. Hovatta +12
There are several methods to calculate the radiative and kinetic power of relativistic jets, but their results can differ by one or two orders of magnitude. Therefore, it is necess…
LOFAR Measures the Hotspot Advance Speed of the High-Redshift Blazar S5 0836+710
Alexander Kappes, Manel Perucho, Matthias Kadler +3
Our goal is to study the termination of an AGN jet in the young universe and to deduce physical parameters of the jet and the intergalactic medium. We use LOFAR to image the long-w…
Gamma-ray emission in radio galaxies under the VLBI scope -- I. Parsec-scale kinematics and high-energy properties of -ray detected TANAMI radio galaxies
R. Angioni, E. Ros, M. Kadler +22
In the framework of the TANAMI multi-wavelength and VLBI monitoring, we study the evolution of the parsec-scale radio emission in radio galaxies in the southern hemisphere and thei…
Detecting Radio Frequency Interference in radio-antenna arrays with the Recurrent Neural Network algorithm
Paul Ray Burd, Karl Mannheim, Tobias März +3
Signal artefacts due to Radio Frequency Interference (RFI) are a common nuisance in radio astronomy. Conventionally, the RFI-affected data are tagged by an expert data analyst in o…
TANAMI: Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry - II. Additional Sources
C. Müller, M. Kadler, R. Ojha +31
TANAMI is a multiwavelength program monitoring active galactic nuclei (AGN) south of -30deg declination including high-resolution Very Long Baseline Interferometry (VLBI) imaging,…
The MHz-peaked radio spectrum of the unusual gamma-ray source PMN J1603-4904
C. Müller, P. R. Burd, R. Schulz +6
Context. The majority of bright extragalactic gamma-ray sources are blazars. Only a few radio galaxies have been detected by Fermi/LAT. Recently, the GHz-peaked spectrum source PKS…