Astrophysics

Each week, we hold a relatively informal seminar/discussion series with an emphasis on extra-galactic and large-scale structure astrophysics.

During Galread a leader/visitor presents a recent paper to the discussion group. The PDF of the paper is...

This will be a journey of connecting Blackfoot language to gravitational wave astronomy. The LIGO/Virgo/KAGRA collaboration includes many people from around the world and all with our own stories. This story will include a behind the scenes look at...

The formation, assembly, and evolution of galaxies is still an open area of active research   Galactic archaeology attempts to answer the questions of galaxy formation and evolution using our Galaxy as a laboratory. In this talk, I will discuss some...

In this talk I will describe recent progress in applying tools from collider physics to problems in classical general relativity. This program has produced state-of-the-art calculations of the conservative two-body Hamiltonian at the fourth order in...

Observations of redshifted 21-cm emission of neutral hydrogen over a wide range of radio frequencies allow us to access redshifts that encompass a vast comoving volume, including the era of dark energy. In this talk, I will present the Hydrogen...

There is a running perception among nuclear experts and physicists that nuclear fusion is 20 years away; always has been, and always will be. Greg Piefer understands the challenge of mastering nuclear fusion as a sustainable, clean energy source...

Cosmological simulations of galaxy formation have evolved significantly over the last decade. In my talk I will describe recent efforts to model the large-scale distribution of galaxies with cosmological hydrodynamical simulations. The focus of the...

Dwarf galaxies (Mstar 1e8 Msun) are increasingly becoming an area of interest, not only for Local Group studies and for dark matter profiles but also as contributors to reionization and the chemical enrichment of the inter-galactic medium (IGM)...