Testing the cubic Galileon gravity model by the Milky Way rotation curve and SPARC data

Man Ho CHAN, Hon Ka HUI

Research output: Contribution to journalArticle

Abstract

Recently, the cubic Galileon gravity (CGG) model has been suggested as an alternative gravity theory to general relativity. The model consists of an extra field potential term that can serve as the "fifth force." In this article, we examine the possibility of whether or not this extra force term can explain the missing mass problem in galaxies without the help of dark matter. By using the Milky Way rotation curve and the Spitzer Photomery and Accurate Rotation Curves data, we show that this CGG model can satisfactorily explain the shapes of these rotation curves without dark matter. The CGG model can be regarded as a new alternative theory to challenge the existing dark matter paradigm. Copyright © 2018 The American Astronomical Society. All rights reserved.
Original languageEnglish
Article number177
JournalAstrophysical Journal
Volume856
Issue number2
DOIs
Publication statusPublished - 2018

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gravity
gravitation
dark matter
curves
potential field
potential fields
relativity
galaxies

Citation

Chan, M. H., & Hui, H. K. (2018). Testing the cubic Galileon gravity model by the Milky Way rotation curve and SPARC data. The Astrophysical Journal, 856(2). Retrieved from http://dx.doi.org/10.3847/1538-4357/aab3e6