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Cosmology : Cosmic Microwave Background & Large scale structureTarun SouradeepI.U.C.A.A.

Cosmology IUCAA VSP program(May 18-22, 2012)Lec. 2:Cosmic ContentPerturbed Universe 1Simple yet, an exotic universe95% of the energy of the universe is in some exotic form

Dark Matter: we cannot see it directly, only via its gravitational affect. Clusters under gravity. 73%

Dark Energy: smooth form of energy that we cannot repulsively under gravity. 23%

Ordinary (baryonic) matter accounts for 4%

Know 99% the radiation content of the universe (CMB)Insignificant now (0.01%) but important prior to z