Astrophysics Seminars

Connecting planetary systems at different stages of stellar evolution helps us understand their formation, evolution and fate, and provides us with exclusive and crucial insights about their dynamics and chemistry. Post-main-sequence stars -- white...

Many aspects of the early universe are currently probed through the cosmic microwave background. Due to theoretical developments and an increase in survey sensitivity, these measurements can now be complemented by large-scale structure observations...

Accretion onto black holes probably powers bright astrophysical sources such as active galactic nuclei, some stellar-mass x-ray sources, gamma-ray bursts, and relativistic radio jets. I will survey developments in the theory of black hole accretion...

Halometry---mapping out the spectrum, location, and kinematics of nonluminous structures inside the Galactic halo---can be realized via effects that variable weak gravitational lensing induces on the proper motions of stars and other luminous...

The properties of supersonic isothermal turbulence influence a variety of astrophysical phenomena, including the structure and evolution of star-forming clouds. I will present a simple model for the structure of dense regions in turbulence in which...

The general Newtonian three-body problem is notoriously resistant to analytic solution. Various implementations of perturbation theory provide analytic solutions in portions of parameter space, but only where hierarchies of masses or separations...

The small bodies of the Solar System are a valuable tracer of its present-day structure, its evolution, and ultimately provide clues into the early times of its formation. In the next 5 years, the known sample of all small body populations will grow...