• Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/joaa/007/02/0059-0070

    • Keywords

       

      neutrino, unstable; cosmology

    • Abstract

       

      Cosmological scenarios with massive unstable neutrinos are discussed. Restrictions on the mass and the lifetime of the unstable neutrino are derived from (a) age and mass density of the universe and (b) the growth of primordial fluctuations. It will not be possible to accommodate unstable neutrinos with masses above ∼ 1 ke V in standard cosmology unless they have exceedingly small lifetime: Τ <5 × 108 s.

    • Author Affiliations

       

      M. M. Vasanthi1 T. Padmanabhan1

      1. Tata Institute of Fundamental Research, Homi Bhabha Road, Bombay - 400005
    • Dates

       
  • Journal of Astrophysics and Astronomy | News

    • Continuous Article Publication

      Posted on January 27, 2016

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      Posted on July 25, 2019

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