• Determination of cosmological parameters: An introduction for non-specialists

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      https://www.ias.ac.in/article/fulltext/pram/054/01/0079-0091

    • Keywords

       

      Hubble expansion; cosmological constant; supernova

    • Abstract

       

      I start by defining the cosmological parameters H0, Θm and ΘA. Then I show how the age of the universe depends on them, followed by the evolution of the scale parameter of the universe for various values of the density parameters. Then I define strategies for measuring them, and show the results for the recent determination of these parameters from measurements on supernovas of type 1a. Implications for particle physics is briefly discussed at the end.

    • Author Affiliations

       

      Palash B Pal1

      1. Saha Institute of Nuclear Physics, 1/AF Bidhan-Nagar, Calcutta - 700 064, India
    • Dates

       
  • Pramana – Journal of Physics | News

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