2017/01/31 by B. Mishra, S. K. Tripathy, Pratik P. Ray +1
Physics and Astronomy · #Anisotropy #Astrophysics #Black Holes and Theoretical Physics #Cosmic string #Cosmology #Cosmology and Gravitation Theories #Dark energy #Galaxies: Formation, Evolution, Phenomena #Metric expansion of space #Physics #Quantum mechanics #String (physics) #Theoretical physics #Universe #msc:83C05 #physics.gen-ph
paper · pdf · doi:10.1007/s10509-018-3313-2
published as Astrophysics and Space Science, Vol.363:86, 2018 · 9 pages, 5 figures
openalex publication_date 2018/04/03 · arxiv created 2018/04/13 · arxiv updated 2018/04/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The role of anisotropic components on the dark energy and the dynamics of the universe is investigated. An anisotropic dark energy fluid with different pressures along different spatial directions is assumed to incorporate the effect of anisotropy. One dimensional cosmic strings aligned along x-direction supplement some kind of anisotropy. Anisotropy in the dark energy pressure is found to evolve with cosmic expansion at least at late times. At an early phase, the anisotropic effect due to the cosmic strings substantially affect the dynamics of the accelerating universe.