Astronomy and Astrophysics Seminars

Some aspects of dark energy research

by Dr. Ankan Mukherjee (IISER, Mohali)

Tuesday, August 21, 2018 from to (Asia/Kolkata)
at A269
Description
In this talk, we will begin by giving an overview of late time cosmology and modelling of dark energy, in the context of late-time cosmic acceleration. Constraints on different cosmological parameters, obtained from recent cosmological observations, will be presented. The issue of degeneracy of dark energy models and the issue of model dependency of the constraints on various cosmological parameters will be discussed. Then different dark energy diagnostics, namely the Om-diagnostic and the Statefinder, will be presented, along with an attempt to constrain the dark energy diagnostics in a model independent way, through a kinematic approach.  Finally the prospects of dark energy research using recent and upcoming radio-astronomical surveys will be presented.