• Constraining cosmological parameters through Sunyaev-Zel’dovich surveys

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      https://www.ias.ac.in/article/fulltext/pram/053/06/0971-0975

    • Keywords

       

      Cosmic microwave background; clusters; cosmology theory; cosmology observations

    • Abstract

       

      For cold dark matter models, images of temperature fluctuations in the cosmic microwave background (CMB), due to Sunyaev Zel’dovich (SZ) effect have been been simulated taking a cosmolgical distribution of clusters into account. All the models are normalised to the 4-year COBE data. The image statistics are compared with the ATCA limits on arcmin scale anisotropy. The comparison appears to favour low-Ω0 open universe models.

    • Author Affiliations

       

      Subhabrata Majumdar1 2 Ravi Subrahamanyan3 4

      1. Joint Astrophysics Programme, Department of Physics, Indian Institute of Science, Bangalore - 560 012, India
      2. Indian Institute of Astrophysics, Koramangala, Bangalore - 560 034, India
      3. Australia Telescope National Facility, CSIRO, Locked bag 194, Narrabri, NSW - 2390, Australia
      4. Raman Research Institute, Sadashivanagar, Bangalore - 560 080, India
    • Dates

       
  • Pramana – Journal of Physics | News

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