135 citations · 1.3k across the 68 of their papers we have counts for
4 papers · 1 filter
A refined method for measuring cosmological distances using variability and proper motions in AGN with VLBI-detected counter-jets
Jeffrey A. Hodgson, Anthony Carr, David Parkinson +6
In a previous paper, we described a `standard speed-gun' (SSG) distance that uses the speed of light to standardize a ruler under the assumption that the radio variability seen in…
Estimating the feasibility of `standard speed-gun' distances
Jeffrey A. Hodgson, Benjamin L'Huillier, Ioannis Liodakis +2
In a previous paper, we demonstrated a single-rung method for measuring cosmological distances in active galactic nuclei (AGN) that can be used from low redshift (z < 0.1) to high…
Using variability and VLBI to measure cosmological distances
Jeffrey A. Hodgson, Benjamin L'Huillier, Ioannis Liodakis +2
In this paper, we propose a new approach to determining cosmological distances to active galactic nuclei (AGN) via light travel-time arguments, which can be extended from nearby so…
The microarcsecond structure of an AGN jet via interstellar scintillation
J. -P. Macquart, L. E. H. Godfrey, H. E. Bignall +1
We describe a new tool for studying the structure and physical characteristics of ultracompact AGN jets and their surroundings with microarcsecond precision. This tool is based on…