File Download
  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Two-fluid dark matter models

TitleTwo-fluid dark matter models
Authors
Issue Date2011
PublisherAmerican Physical Society. The Journal's web site is located at http://prd.aps.org
Citation
Physical Review D (Particles, Fields, Gravitation and Cosmology), 2011, v. 83 n. 12, article no. 124051 How to Cite?
AbstractWe investigate the possibility that dark matter is a mixture of two noninteracting perfect fluids, with different four-velocities and thermodynamic parameters. The two-fluid model can be described as an effective single anisotropic fluid, with distinct radial and tangential pressures. The basic equations describing the equilibrium structure of the two-fluid dark matter model, and of the tangential velocity of test particles in stable circular orbits, are obtained for the case of a spherically symmetric static geometry. By assuming a nonrelativistic kinetic model for the dark matter particles, the density profile and the tangential velocity of the dark matter mixture are obtained by numerically integrating the gravitational field equations. The cosmological implications of the model are also briefly considered, and it is shown that the anisotropic two-fluid model isotropizes in the large-time limit. © 2011 American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/142483
ISSN
2014 Impact Factor: 4.643
2015 SCImago Journal Rankings: 1.882
ISI Accession Number ID
Funding AgencyGrant Number
government of the Hong Kong SAR
Fundacao para a Ciencia e TecnologiaPTDC/FIS/102742/2008
CERN/FP/116398/2010
Funding Information:

The work of TH was supported by a GRF grant of the government of the Hong Kong SAR. FSNL acknowledges financial support of the Fundacao para a Ciencia e Tecnologia through the grants PTDC/FIS/102742/2008 and CERN/FP/116398/2010.

 

DC FieldValueLanguage
dc.contributor.authorHarko, Ten_US
dc.contributor.authorLobo, FSNen_US
dc.date.accessioned2011-10-28T02:46:53Z-
dc.date.available2011-10-28T02:46:53Z-
dc.date.issued2011en_US
dc.identifier.citationPhysical Review D (Particles, Fields, Gravitation and Cosmology), 2011, v. 83 n. 12, article no. 124051en_US
dc.identifier.issn1550-7998-
dc.identifier.urihttp://hdl.handle.net/10722/142483-
dc.description.abstractWe investigate the possibility that dark matter is a mixture of two noninteracting perfect fluids, with different four-velocities and thermodynamic parameters. The two-fluid model can be described as an effective single anisotropic fluid, with distinct radial and tangential pressures. The basic equations describing the equilibrium structure of the two-fluid dark matter model, and of the tangential velocity of test particles in stable circular orbits, are obtained for the case of a spherically symmetric static geometry. By assuming a nonrelativistic kinetic model for the dark matter particles, the density profile and the tangential velocity of the dark matter mixture are obtained by numerically integrating the gravitational field equations. The cosmological implications of the model are also briefly considered, and it is shown that the anisotropic two-fluid model isotropizes in the large-time limit. © 2011 American Physical Society.-
dc.languageengen_US
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prd.aps.org-
dc.relation.ispartofPhysical Review D (Particles, Fields, Gravitation and Cosmology)en_US
dc.rightsPhysical Review D (Particles, Fields, Gravitation and Cosmology). Copyright © American Physical Society.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleTwo-fluid dark matter modelsen_US
dc.typeArticleen_US
dc.identifier.emailHarko, T: harko@hkucc.hku.hken_US
dc.identifier.emailLobo, FSN: flobo@cii.fc.ul.pt-
dc.identifier.authorityHarko, TC=rp01333en_US
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevD.83.124051-
dc.identifier.scopuseid_2-s2.0-79960757209-
dc.identifier.hkuros196861en_US
dc.identifier.volume83en_US
dc.identifier.issue12, article no. 124051-
dc.identifier.isiWOS:000292240500002-
dc.publisher.placeUnited States-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats