On defining astronomically meaningful Reference Frames in General Relativity

2025/10/08 by Costa, L. Filipe O., Frutos-Alfaro, Francisco, Natário, José +1 · 1 citation
#Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc)

paper · doi:10.48550/arxiv.2510.07400

Abstract

In a recent paper we discussed when it is possible to define reference frames nonrotating with respect to distant inertial reference objects (extension of the IAU reference systems to exact general relativity), and how to construct them. We briefly review the construction, illustrating it with further examples, and caution against the recent misuse of zero angular momentum observers (ZAMOs).

Citations

• A Practical Relativistic Model of Microarcsecond Astrometry in Space

Cited by

• Orbital dynamics and spin-precession around a circular chiral vorton

Related

• What is a reference frame in General Relativity?
• Reference frames in classical and relativistic physics
• An Extension of the IAU Framework for Reference Systems
• Non-Inertial Frames in Special and General Relativity
• Reference Frame in General Relativity