Astrophysics Seminars

ABSTRACT: Motivated by astronomical accretion disks in which magnetorotational instability (MRI) may be locally or episodically suppressed, such as protostellar disks, recent laboratory experiments have studied hydrodynamic turbulence in rotating...

ABSTRACT: Star-forming galaxies represent a valuable tracer of cosmic history. Recent observational progress with the Hubble Space Telescope has led to the discovery and study of the earliest-known galaxies at a time when the universe was only ~800...

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...