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Prof Tarun Souradeep
IISER Pune

Abstract:

The origin of our Universe, a quest as old as humanity, is just beginning to be unraveled. Over the past few decades, spectacularly deep inroads and high precision inferences on Cosmic history and origin have been made possible, largely from increasingly exquisite measurements of the cosmic microwave background (CMB). The CMB sky has much more to reveal !!! This includes a grand prize of detecting a cosmic gravitational wave emanating within atto-attoseconds of ‘big-bang’ that would potentially mark the mechanism and energy scale of new ultra high-energy physics. I present the case for a next-generation CMB space mission  that provides a unique opportunity for India to partake in potentially path-breaking discovery, together with  several guaranteed high science dividends and providing rich legacy astronomical data.