College of Science

SEMINAR: Gregory Novak [Observatoire de Paris]

Simulations of Super-massive Black Hole Growth and Feedback

Jan 16, 2014 10:50 AM to Jan 16, 2014 12:00 PM at Building 8, Room 241

Gregory NovakAt the centers of galaxies we find black holes with masses ranging from one million to ten billion times the mass of our sun, and whenthese black holes grow by swallowing matter, they become some of the brightest objects in the universe. One of the big recent discoveries of in extra-galactic astrophysics is that every large galaxy seems to contain such a black hole, and that the mass of the black hole is closely related to the properties of the galaxy. This is very surprising since it seems to indicate that there is some physical process that connects super-massive black holes to the host galaxy in spite of the fact that black holes and galaxies differ in size by a factor of almost a billion. I use parallel programming techniques to perform high-resolution numerical simulations of galaxies and black holes in order to understand how galaxies affect black holes and how black holes in turn affect their host galaxies. The simulations include a realistic implementation of black hole feedback including many physical processes and follow the dynamics of infalling and outflowing gas over five orders of magnitude in size, from ~1 parsec to ~100 kiloparsecs.

10:50 a.m. Refreshments
11:00 a.m. Seminar