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Can general relativity play a role in galactic dynamics?

  • Davide Astesiano
  • , Matteo Luca Ruggiero

Research output: Contribution to journalArticlepeer-review

Abstract

We use the gravitoelectromagnetic approach to the solutions of Einstein's equations in the weak-field and slow-motion approximation to investigate the impact of general relativity on galactic dynamics. In particular, we focus on a particular class of the solutions for the gravitomagnetic field, and show that, contrary to what is expected, they may introduce non-negligible corrections to the Newtonian velocity profile. The origin and the interpretation of these corrections are discussed and explicit applications to some galactic models are provided. These are the homogeneous solutions for the gravitomagnetic field, i.e., solutions with vanishing matter currents.

Original languageEnglish
Article numberL121501
JournalPhysical Review D
Volume106
Issue number12
DOIs
Publication statusPublished - 15 Dec 2022

Bibliographical note

Funding Information: The work of D. A. is supported in part by Icelandic Research Fund Grant No. 228952-051. M. L. R. acknowledges the contribution of the local research project “Modelli gravitazionali per lo studio dell’universo” (2022) — Dipartimento di Matematica “G.Peano”, Università degli Studi di Torino. The authors thank Luca Ciotti, Lárus Thorlacius, Valentina Giangreco Puletti, Friðrik Gautason, Antonello Ortolan, and Clive C. Speake for stimulating discussions. Publisher Copyright: © 2022 American Physical Society.

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