Astrophysics Seminars

Black hole feedback -- the strong interaction between the energy output of supermassive black holes and their surrounding environments -- is routinely invoked to explain the absence of overly luminous galaxies, the observed high temperatures of...

ABSTRACT: The theoretical community is beginning to appreciate (and predict) the potential diversity of explosive outcomes from stellar evolution while the supernovae surveys are finding new kinds of supernovae. I will speak about two such new...

ABSTRACT: A decade since the realization that our universe's expansion is accelerating, the ball remains in the observationalists' court -- as the theorists look for more constraints on the parameter space.I will discuss some of the progress that...

ABSTRACT: Many galaxies exhibit the need for a continual source of star formation fuel. Halo gas is a common feature of these galaxies, though utilizing this gas as fuel may require the gas to go through multiple phases. I will discuss new...

ABSTRACT: With the imminent start of Advanced LIGO/VIRGO observations, and the less imminent but much hoped-for advent of LISA, gravitational wave science will transition from a specialty of theoretical astrophysics and experimental interferometry...

ABSTRACT: I will review our present understanding of super-Eddington atmospheres, as borne from theory and observations. In particular, I will show how atmospheres can sustain super-Eddington fluxes, while accelerating only ``moderate'' mass loss...