Astrophysics Seminars

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...

The Lyman alpha forest, DLAs and metal absorbers are tracers of the large-scale structure with different linear bias factors, which can be measured and compared to model predictions. The large number of quasar spectra in the BOSS survey allowed for...

As clusters of stars orbit our own Milky Way, a gravitational tidal interaction unfolds and the clusters tear apart into distinct morphological and kinematic structures. From our understanding of gravity, the distribution and motion of these...

Galaxy clusters as astronomical tools generally offer two advantages: to boost the brightnesses of objects in the background, and to study the dark matter in the lens. We can now introduce a third use: to unveil properties of the underlying dark...

Since the first discoveries of gravitational waves and the data release from the first observing run of Advanced LIGO, the astrophysics community has a growing interest to understand gravitational-wave data. In this talk, I will give an overview on...