171 citations
- Data61AU3 papers
- İzmir University of EconomicsTR3 papers
- Laboratoire d'Informatique, de Robotique et de Microélectronique de MontpellierFR3 papers
- Max Planck Institute for Gravitational PhysicsDE3 papers
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8 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 light curve of the companion to PSR B1957+20
Mark Reynolds, Paul Callanan, Andrew Fruchter +3
We present a new analysis of the light curve for the secondary star in the eclipsing binary millisecond pulsar system PSR B1957+20. Combining previous data and new data points at m…
Relativistic Jets in The Radio Reference Frame Image Database I: Apparent Speeds from the First Five Years of Data
B. G. Piner, M. Mahmud, A. L. Fey +1
(Abridged) We present the results of an analysis of relativistic jet apparent speeds from VLBI images in the Radio Reference Frame Image Database (RRFID). The images are snapshot V…
Keck Infrared Observations of GRO J0422+32 in Quiescence
Mark T. Reynolds, Paul J. Callanan, Alexei V. Filippenko
We present Keck K-band photometry and low-resolution H & K-band spectroscopy of the X-ray nova GRO J0422+32 obtained while the system was in the quiescent state. No clear ellipsoid…
Intermediate Scale Structures in BL Lac objects
C. Reynolds, T. V. Cawthorne, D. C. Gabuzda
The parsec-scale total intensity structures of BL Lac objects share many characteristics with quasars: e.g. well-collimated jets and superluminal motion. However, the jets of BL La…