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    • Massless particles and cosmology

      Varun Sahni

      Astrophysics Volume 15 Issue 5 November 1980 pp 423-434

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/015/05/0423-0434

    • Keywords

       

      Cosmology; density perturbations; radiation; massless particles; neutrino

    • Abstract

       

      Post recombination density perturbations have been studied in a two-component matter-radiation universe. The study has been carried out for variable matter and radiation densities. The possibility of the existence of different kinds of neutrinos in addition to the electronic, muonic and taonic has been considered and conclusions have been drawn as to the upper limit of the radiation density for different values of Ωm.

    • Author Affiliations

       

      Varun Sahni1

      1. Department of Physics, Moscow State University, Moscow, USSR

    • Dates

       
      Published
      November 1980
      Manuscript received
      22 April 1980
      Manuscript revised
      1 September 1980

  • Pramana – Journal of Physics | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

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