Yoel Rephaeli is an Israeli-American cosmologist. He is a Professor of Physics at Tel Aviv University, Israel.[1] Rephaeli studies the Sunyaev-Zel'dovich effect https://scholar.google.com/scholar?q=%22Sunyaev+Zeldovich%22&ie=UTF-8&oe=UTF-8&hl=en and the astrophysics of galaxy clusters.