Prof. Sheth is a faculty member of the University of Pennsylvania, Philadelphia, USA. He earned his PhD degree from the University of Cambridge, UK. He has played a leading role in the development of what is now the standard model to describe the nonlinear clustering of structures in the Universe: the Halo Model. It is currently the best language for interpreting many measurements of cosmological interest, such as weak lensing, the thermal and kinematic Sunyaev-Zeldovich effects, and how galaxy clustering depends on galaxy type.

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