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On defining astronomically meaningful Reference Frames in General Relativity
Published 8 Oct 2025 in gr-qc and astro-ph.GA | (2510.07400v1)
Abstract: In a 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).
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