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KOÇ UNIVERSITY PHYSICS SEMINAR
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Speaker : Sohrab Rahvar, Sharif University of Technology
Title : The Gravitational Grating
Date : November 1, 2018 (Thursday!)
Time : 14:30
Cookie & Tea : ENGB29 14:15
Place : ENGB29 (Note the different room)
web : https://physics-seminars.ku.
Abstract:
In this talk, I will introduce the interaction of the electromagnetic waves with the gravitational waves in the wave optics regime. The application of this formalism to the electromagnetic waves from a distant quasar results in a diffraction pattern of the intensity of light on the observer position. In other words, gravitational waves can play the role of an optical grating in the cosmological scales. At the end, I will discuss the feasibility of observation of this effect with radio telescopes in the strong lensing systems.
Reference: “Gravitational Grating”, S. Rahvar, Monthly Notices of the Royal Astronomical Society (2018) 479 (1), 406; https://arxiv.org/abs/
Short Bio: Sohrab Rahvar was born in Tabriz, Iran in 1974. He has received his BS in physics from Tabriz University in 1995, and his MS and PhD from Sharif University of Technology in 1996 and 2000, respectively. He has held postdoctoral and visiting scientist positions at the University of Paris-Sud and Perimeter Institute for theoretical physics, Waterloo. He joined the department of physics of Sharif University as a faculty member in 2001 and has been serving as the chairman of the department since 2015. Professor Rahvar’s research focuses on astrophysics and cosmology.