Venue: Tariq Rafi Lecture Hall, Habib University
Gravity has its own messenger: Gravitational waves are ripples in the fabric of spacetime produced by accelerated motions of matter. Laser Interferometer Space Antenna (LISA), a joint ESA/ NASA gravitational wave space observatory set to be launched in 2034, shall grant access to an immense cosmological volume. LISA will observe gravitational waves in milli-hertz regime form various cosmic sources including binary supermassive black hole (SMBH), white dwarf binaries, extreme mass ratio inspirals and stochastic background form early universe. In this talk, I shall present an overview of science objectives/goals of the mission and its implications on transforming our understanding of final stages of stellar evolution, SMBH birth, the coevolution of SMBHs with host galaxies as well as their role in sketching the cosmological canvas of the Universe. Particular focus of my talk shall be on physics describing formation, evolution and dynamics of SMBHs in aftermath of galaxy collision. With immense computational power of world’s top notch supercomputers, we model complete dynamical evolution of SMBH pairs covering all relevant physical processes from galaxy mergers to black hole mergers.
Fazeel Mahmood Khan
Research Fellow Vanderbilt University, USA | Associate Prof. Institute of Space Technology, Islamabad