A refined method for measuring cosmological distances using variability and proper motions in AGN with VLBI-detected counter-jets

arXiv:2608.02202 · astro-ph.CO, astro-ph.HE · Submitted 2026-08-03 · Read on arXiv

Jeffrey A. Hodgson, Anthony Carr, David Parkinson, Matteo Statti, Jaehyeon Myeong, Benjamin L'Huillier, Arman Shafieloo, Ioannis Liodakis, Se Heon Oh

astro-ph.CO, astro-ph.HE

Submitted: 2026-08-03

Comments: 6 pages, 2 figures. Accepted to A&A. Fixed typo in abstract

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• AGN — 7× in this paper · explained in 1 episode
• Calibration — 7× in this paper · explained in 7 episodes
• Core — 5× in this paper · explained in 2 episodes
• Consistency — 3× in this paper · explained in 3 episodes
• National Research Foundation of Korea — 3× in this paper
• APEX — 2× in this paper · explained in 1 episode
• Benchmark — 2× in this paper · explained in 2 episodes
• Degeneracy — 2× in this paper · explained in 3 episodes
• Active Galactic Nuclei — 1× in this paper
• Active Galactic Nuclei (AGN) — 1× in this paper · explained in 1 episode
• Cosmic Microwave Background — 1× in this paper
• GHz with the Global Millimeter VLBI Array — 1× in this paper
• Gravitational Lensing — 1× in this paper · explained in 2 episodes
• Hubble Tension — 1× in this paper · explained in 9 episodes
• Square Kilometre Array — 1× in this paper
• Tip of the Red Giant Branch — 1× in this paper

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