5 papers · 1 filter
The nature of gamma ray blazar candidate PMN J1326-5256
Hayley Bignall, Giuseppe Cimo, David Jauncey +3
A comparison of AGN detected at gamma ray energies by EGRET with flat-spectrum radio sources observed in surveys for intraday variability reveals that a remarkably high fraction of…
Properties of the Scattering Screen in Front of Scintillating Quasar PKS 1257-326
H. E. Bignall, D. L. Jauncey, J. E. J. Lovell +3
PKS 1257-326 is a quasar showing extremely unusual, rapid interstellar scintillation (ISS), which has persisted for at least a decade. Simultaneous observations with the VLA and AT…
COSMIC : Microarcsecond resolution with a 30 metre radio telescope
P. M. McCulloch, S. P. Ellingsen, D. L. Jauncey +4
Interstellar scintillation has been conclusively demonstrated to be the principal cause of the intraday variability (IDV) observed in the centimetre-wavelength emission of many AGN…
Radio Emission from the X-ray transient XTE J1550-564
D. Hannikainen, K. Wu, Campbell-Wilson +6
We report multifrequency radio observations of XTE J1550-564 obtained with the Molonglo Observatory Synthesis Telescope and the Australia Telescope Compact Array at the time of its…
Measuring the Size of the Vela Pulsar's Radio Emission Region
C. R. Gwinn, J. E. Reynolds, D. L. Jauncey +9
We describe measurements of the size of the Vela pulsar via scintillation, using both fits to the distribution of intensity and measurements of the modulation index. We briefly dis…