Abstract
We study cosmological models with anisotropy in expansion rates in the context of the recent observations predicting an accelerating universe. In the absence of any anisotropy in the cosmic fluid, it is shown that the role of skewness in directional Hubble rates is crucial in deciding the behavior of the model. We find that incorporation of skewness leads to a more evolving effective equation of state parameter.
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Acknowledgement
I am grateful to Prof. D. Majumdar for his help and discussion related to the present work. I gratefully acknowledge the support from Science Academies (Indian Academy of Sciences, Indian National Science Academy and the National Academy of Sciences, India) in form of Summer Research Fellowship to work in Saha Institute of Nuclear Physics, Kolkata, India.
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Tripathy, S.K. Late time acceleration and role of skewness in anisotropic models. Astrophys Space Sci 350, 367–374 (2014). https://doi.org/10.1007/s10509-013-1727-4
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DOI: https://doi.org/10.1007/s10509-013-1727-4