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dc.contributor.authorHorne, Keith Douglas
dc.date.accessioned2016-04-11T14:33:39Z
dc.date.available2016-04-11T14:33:39Z
dc.date.issued2016-06-01
dc.identifier.citationHorne , K D 2016 , ' Conformal gravity rotation curves with a conformal Higgs halo ' Monthly Notices of the Royal Astronomical Society , vol. 458 , no. 4 , pp. 4122-4128 . DOI: 10.1093/mnras/stw506en
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 241587449
dc.identifier.otherPURE UUID: e77e18f0-6499-454b-8167-484da69d8441
dc.identifier.otherRIS: urn:BD7BF4E5A391CC2FDC0D55AD5E3EE524
dc.identifier.otherScopus: 84965025499
dc.identifier.urihttp://hdl.handle.net/10023/8597
dc.description.abstractWe discuss the effect of a conformally coupled Higgs field on Conformal Gravity (CG) predictions for the rotation curves of galaxies. The Mannheim-Kazanas (MK) metric is a valid vacuum solution of CG's 4-th order Poisson equation if and only if the Higgs field has a particular radial profile, S(r) = S0 a/(r + a), decreasing from S0 at r = 0 with radial scale length a. Since particle rest masses scale with S(r)/S0, their world lines do not follow time-like geodesics of the MK metric gμν, as previously assumed, but rather those of the Higgs-frame MK metric ḡμν = Ω2 gμν, with the conformal factor Ω(r) = S(r)/S0. We show that the required stretching of the MK metric exactly cancels the linear potential that has been invoked to fit galaxy rotation curves without dark matter. We also formulate, for spherical structures with a Higgs halo S(r), the CG equations that must be solved for viable astrophysical tests of CG using galaxy and cluster dynamics and lensing.en
dc.format.extent7en
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Societyen
dc.rights© 2016 The Author. Published by Oxford University Press on behalf of the Royal Astronomical Society. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at: https://dx.doi.org/10.1093/mnras/stw506en
dc.subjectGravitationen
dc.subjectGalaxies: kinematics and dynamicsen
dc.subjectCosmoslogy: theory, dark matter, dark energyen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.subjectNDASen
dc.subject.lccQBen
dc.subject.lccQCen
dc.titleConformal gravity rotation curves with a conformal Higgs haloen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.identifier.doihttps://doi.org/10.1093/mnras/stw506
dc.description.statusPeer revieweden


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