• Rotation curves of galaxies: Missing mass or missing physics

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      https://www.ias.ac.in/article/fulltext/pram/049/01/0147-0154

    • Keywords

       

      Rotation curves; galaxies; turbulence; inverse cascade

    • Abstract

       

      The rotation curves of galaxies are modelled using very special properties of an hydrodynamically turbulent fluid possessing helicity fluctuations. The development of correlations among these fluctuations leads to the formation of organized structures characterized by a new flat branch of the spatial energy spectrum in addition to the well known Kolmogorov spectrum. It is proposed that the flat nature of the rotation curves of galaxies may be a result of the energy cascading processes occuring in turbulent galactic atmospheres. Thus, in this model, there is no need of invoking dark matter to account for the flat rotation curves of galaxies.

    • Author Affiliations

       

      V Krishan1

      1. Indian Institute of Astrophysics, Bangalore - 560 034, India
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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