107 citations · 160 across the 5 of their papers we have counts for
7 papers · 1 filter
AGN jet physics from measurements of the frequency-dependent position of the VLBI radio core
Shane P. O'Sullivan, Denise C. Gabuzda
Accurate measurement of the frequency-dependent shift of the self-absorbed radio core is required for multi-frequency analysis of VLBI data since absolute positional information is…
Three dimensional magnetic field structure of six parsec-scale active galactic nuclei jets
Shane P. O'Sullivan, Denise C. Gabuzda
The parsec-scale Faraday rotation measure (RM) distribution of six "blazars" is investigated using multi-frequency (4.6--43 GHz) polarization observations taken on 2006 July 2 with…
The 15--43-GHz Parsec-scale Circular Polarization of 41 Active Galactic Nuclei
V. M. Vitrishchak, D. C. Gabuzda, E. A. Rastorgueva +2
We present the results of parsec-scale circular polarization (CP) measurements based on VLBA data for a number of radio-bright, core-dominated AGN obtained simultaneously at 15, 22…
Environmental limits on the non-resonant cosmic-ray current-driven instability
B. Reville, J. G. Kirk, P. Duffy +1
We investigate the so-called non-resonant cosmic-ray streaming instability, first discussed by Bell (2004). The extent to which thermal damping and ion-neutral collisions reduce th…
The transport of cosmic rays in self-excited magnetic turbulence
B. Reville, S. O'Sullivan, P. Duffy +1
The process of diffusive shock acceleration relies on the efficacy with which hydromagnetic waves can scatter charged particles in the precursor of a shock. The growth of self-gene…
Radio Circular Polarization Produced in Helical Magnetic Fields in Eight Active Galactic Nuclei
D. C. Gabuzda, V. M. Vitrishchak, M. Mahmud +1
Homan & Lister (2006) have recently published circular-polarization (CP) detections for 34 objects in the MOJAVE sample - a set of bright, compact AGN being monitored by the Very L…