Astrophysics Seminars

The weak gravitational lensing of source galaxies divided into several redshift slices (tomography) is known to be a powerful cosmological probe that can be used to study the three dimensional distribution of dark matter, the nature of dark energy...

Please note that a Bahcall Lunch is NOT scheduled following this talk.

Lyman Alpha Emitters (LAEs) are becoming an important probe of the reionization of the universe. To correctly interpret the observations of LAEs, the effect of resonant scattering of Lyman-alpha photons has to be accounted for. I will present...

Stellar mass black holes with stellar companions on circular orbits can become powerful X-ray sources when mass is transferred from the star to the hole. In this talk, inspired by recent observations of RE J1034 +396, I will consider what happens...

Magnetohydrodynamic (MHD) turbulence is responsible for many important astrophysics problems. For example, in the Sun, small scale magnetic fields can self-organize and generate large scale fields; in accreting disks, magnetorotational instability...