• About
  • Policies
  • What is open access
  • Library
  • Contact
Advanced search
      View Item 
      •   BUIR Home
      • Scholarly Publications
      • Faculty of Science
      • Department of Mathematics
      • View Item
      •   BUIR Home
      • Scholarly Publications
      • Faculty of Science
      • Department of Mathematics
      • View Item
      JavaScript is disabled for your browser. Some features of this site may not work without it.

      On a particular type of product manifolds and shear-free cosmological models

      Thumbnail
      View / Download
      168.1 Kb
      Author(s)
      Gürses M.
      Plaue, M.
      Scherfner, M.
      Date
      2011
      Source Title
      Classical and Quantum Gravity
      Print ISSN
      0264-9381
      Electronic ISSN
      1361-6382
      Publisher
      Institute of Physics Publishing
      Volume
      28
      Issue
      17
      Pages
      175009-1 - 175009-12
      Language
      English
      Type
      Article
      Item Usage Stats
      110
      views
      80
      downloads
      Abstract
      Shear-free flows or observer fields are important objects of study in general relativity; stationary or rigid observers are important examples of shear-free reference frames. In this paper, we introduce a geometric structure based on a local coordinate expression of metrics admitting a shear-free reference frame. Furthermore, we investigate a large sub-class of these models ('tilted' warped products) that includes the Robertson-Walker spacetime, the Gödel spacetime and other models of Gödel type. We present a novel example of a rotating and expanding cosmological model that is contained in this class. Finally, we describe the geodesic barotropic perfect fluid solutions. © 2011 IOP Publishing Ltd.
      Keywords
      04.20.Cv
      04.20.Jb
      04.20.Gz
      Permalink
      http://hdl.handle.net/11693/12247
      Published Version (Please cite this version)
      http://dx.doi.org/10.1088/0264-9381/28/17/175009
      Collections
      • Department of Mathematics 653
      Show full item record

      Browse

      All of BUIRCommunities & CollectionsTitlesAuthorsAdvisorsBy Issue DateKeywordsTypeDepartmentsThis CollectionTitlesAuthorsAdvisorsBy Issue DateKeywordsTypeDepartments

      My Account

      LoginRegister

      Statistics

      View Usage StatisticsView Google Analytics Statistics

      Bilkent University

      If you have trouble accessing this page and need to request an alternate format, contact the site administrator. Phone: (312) 290 1771
      © Bilkent University - Library IT

      Contact Us | Send Feedback | Off-Campus Access | Admin | Privacy