• Cosmology with cosmic microwave background anisotropy

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/067/04/0699-0710

    • Keywords

       

      Cosmology; cosmic microwave background

    • Abstract

       

      Measurements of CMB anisotropy and, more recently, polarization have played a very important role in allowing precise determination of various parameters of the ‘standard’ cosmological model. The expectation of the paradigm of inflation and the generic prediction of the simplest realization of inflationary scenario in the early Universe have also been established — ‘acausally’ correlated initial perturbations in a flat, statistically isotropic Universe, adiabatic nature of primordial density perturbations. Direct evidence for gravitational instability mechanism for structure formation from primordial perturbations has been established. In the next decade, future experiments promise to strengthen these deductions and uncover the remaining crucial signature of inflation — the primordial gravitational wave background.

    • Author Affiliations

       

      Tarun Souradeep1

      1. Inter-University Centre for Astronomy and Astrophysics, Post Bag 4, Ganeshkhind, Pune - 411 007, India
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