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dc.date.accessioned2017-08-16T14:47:12Z
dc.date.available2017-08-16T14:47:12Z
dc.date.created2015-09-09T11:16:46Z
dc.date.issued2015
dc.identifier.citationGrönke, Max Balthasar Llinares, Claudio Mota, David Winther, Hans Arnold . Halo velocity profiles in screened modified gravity theories. Monthly notices of the Royal Astronomical Society. 2015, 449(3), 2837-2844
dc.identifier.urihttp://hdl.handle.net/10852/57122
dc.description.abstractScreened modified gravity predicts potentially large signatures in the peculiar velocity field that makes it an interesting probe to test gravity on cosmological scales. We investigate the signatures induced by the Symmetron and a Chameleon f(R) model in the peculiar velocity field using N-body simulations. By studying fifth force and halo velocity profiles, we identify three general categories of effects found in screened modified gravity models: a fully screened regime where we recover Λ cold dark matter to high precision, an unscreened regime where the fifth force is in full operation, and, a partially screened regime where screening occurs in the inner part of a halo, but the fifth force is active at larger radii. These three regimes can be pointed out very clearly by analysing the deviation in the maximum cluster velocity. Observationally, the partially screened regime is of particular interest since an uniform increase of the gravitational force – as present in the unscreened regime – is degenerate with the (dynamical) halo mass estimate, and, thus, hard to detect. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.en_US
dc.languageEN
dc.publisherBlackwell Publishing
dc.titleHalo velocity profiles in screened modified gravity theoriesen_US
dc.typeJournal articleen_US
dc.creator.authorGrönke, Max Balthasar
dc.creator.authorLlinares, Claudio
dc.creator.authorMota, David
dc.creator.authorWinther, Hans Arnold
cristin.unitcode185,15,3,0
cristin.unitnameInstitutt for teoretisk astrofysikk
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1
dc.identifier.cristin1262826
dc.identifier.bibliographiccitationinfo:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Monthly notices of the Royal Astronomical Society&rft.volume=449&rft.spage=2837&rft.date=2015
dc.identifier.jtitleMonthly notices of the Royal Astronomical Society
dc.identifier.volume449
dc.identifier.issue3
dc.identifier.startpage2837
dc.identifier.endpage2844
dc.identifier.doihttp://dx.doi.org/10.1093/mnras/stv496
dc.identifier.urnURN:NBN:no-59815
dc.type.documentTidsskriftartikkelen_US
dc.type.peerreviewedPeer reviewed
dc.source.issn0035-8711
dc.identifier.fulltextFulltext https://www.duo.uio.no/bitstream/handle/10852/57122/1/stv496.pdf
dc.type.versionPublishedVersion


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