Astrophysics Seminars

ABSTRACT: A fundamental challenge in cosmology and galaxy evolution is to understand how dark matter (DM) haloes influence the galaxies that form inside them. Unfortunately, the parts of this process that we can simulate well—the growth of DM...

ABSTRACT: Reionization was the last major phase transition for most of the normal matter in the universe, and a landmark event in the early phases of galaxy formation. Lyman alpha emission from galaxies provides a good tool for probing...

ABSTRACT: Stacking of data from the Planck satellite allows the mean Sunyaev-Zeldovich decrement of dark matter halos to be measured over a range of more than two orders of magnitude in mass. Surprisingly, the results indicate that the amount of...

ABSTRACT: Saturn's regular satellites exhibit a number of orbital anomalies, including the relatively high eccentricity of Titan, large inclination of Iapetus and surprisingly evolved Titan-Hyperion resonance. Recently, Lainey et al.(2012)...

ABSTRACT: Magnetic forces in the diffuse interstellar medium are much greater than the forces due to self-gravitation, thereby precluding star formation there. Historically, it has been conjectured that ambipolar diffusion, in which neutral...

ABSTRACT: Eclipsing systems are famous for providing abundant opportunities to study the basic properties of stars and planets --- but eclipsing systems with more than two bodies present truly extraordinary opportunities. This is because non...