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dc.contributor.authorBanik, Indranil
dc.contributor.authorZhao, Hongsheng
dc.date.accessioned2022-06-28T09:30:14Z
dc.date.available2022-06-28T09:30:14Z
dc.date.issued2022-06-27
dc.identifier279724688
dc.identifierdc385cfc-128f-45aa-ac3d-bc8bd8aea01f
dc.identifier000832101600001
dc.identifier85194106716
dc.identifier.citationBanik , I & Zhao , H 2022 , ' From galactic bars to the Hubble tension : weighing up the astrophysical evidence for Milgromian gravity ' , Symmetry , vol. 14 , no. 7 , 1331 . https://doi.org/10.3390/sym14071331en
dc.identifier.issn2073-8994
dc.identifier.otherArXiv: http://arxiv.org/abs/2110.06936v9
dc.identifier.urihttps://hdl.handle.net/10023/25571
dc.descriptionFunding: IB is supported by Science and Technology Facilities Council grant ST/V000861/1, which also partially supports HZ. IB acknowledges support from a "Pathways to Research" fellowship from the University of Bonn.en
dc.description.abstractAstronomical observations reveal a major deficiency in our understanding of physics—the detectable mass is insufficient to explain the observed motions in a huge variety of systems given our current understanding of gravity, Einstein’s General theory of Relativity (GR). This missing gravity problem may indicate a breakdown of GR at low accelerations, as postulated by Milgromian dynamics (MOND). We review the MOND theory and its consequences, including in a cosmological context where we advocate a hybrid approach involving light sterile neutrinos to address MOND’s cluster-scale issues. We then test the novel predictions of MOND using evidence from galaxies, galaxy groups, galaxy clusters, and the large-scale structure of the universe. We also consider whether the standard cosmological paradigm (LCDM) can explain the observations and review several previously published highly significant falsifications of it. Our overall assessment considers both the extent to which the data agree with each theory and how much flexibility each has when accommodating the data, with the gold standard being a clear a priori prediction not informed by the data in question. Our conclusion is that MOND is favoured by a wealth of data across a huge range of astrophysical scales, ranging from the kpc scales of galactic bars to the Gpc scale of the local supervoid and the Hubble tension, which is alleviated in MOND through enhanced cosmic variance. We also consider several future tests, mostly at scales much smaller than galaxies.
dc.format.extent147
dc.format.extent8378493
dc.format.extent9493293
dc.language.isoeng
dc.relation.ispartofSymmetryen
dc.subjectGravitationen
dc.subjectCosmologyen
dc.subjectGalaxies: kinematics and dynamicsen
dc.subjectGalaxies: evolutionen
dc.subjectGalaxies: interactionsen
dc.subjectGalaxies: groupsen
dc.subjectGalaxies: clustersen
dc.subjectLarge-scale structure of Universeen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.subjectMCCen
dc.subject.lccQBen
dc.subject.lccQCen
dc.titleFrom galactic bars to the Hubble tension : weighing up the astrophysical evidence for Milgromian gravityen
dc.typeJournal itemen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.identifier.doi10.3390/sym14071331
dc.description.statusPeer revieweden
dc.identifier.urlhttps://arxiv.org/abs/2110.06936en


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