Joint IAS Princeton University Astrophysics Colloquium

Our understanding of the dynamics of our Local Group of galaxies has changed dramatically over the past few years owing to significant advancements in astrometry and our theoretical understanding of galaxy structure. I will provide an overview of...

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

Since Parker's 1958 paper predicting a supersonic outflow from the Sun, spacecraft measurements and theoretical investigations have led to considerable progress in our understanding of the solar wind. In this talk, I will review one of the leading...

The NASA New Horizons spacecraft provided the first close look at Pluto, its moons, and environment during its close flyby in 2015. Pluto was shown to be a complex active planet with a variegated surface exhibiting heterogeneous geological processes...

In the course of structure formation, only a small fraction of the baryons turned into stars - most remain in a diffuse hot intergalactic medium. The growth and evolution of galaxies is controlled by feedback processes, such as energy and metal...

Fast Radio Bursts (FRBs) are a newly discovered astrophysical phenomenon consisting of short (few ms) bursts of radio waves. FRBs occur roughly 1000 times per sky per day. From their dispersion measures, these events are clearly extragalactic and...

With the discovery of a binary neutron star coalescence in gravitational waves, and the discovery of an associated short gamma-ray burst, and the discovery of an associated optical afterglow, we have finally entered the era of gravitational-wave...

Massive black holes, weighing millions to billions of solar masses, inhabit the centers of today's galaxies. Black hole masses typically scale with properties of their hosts, such as bulge mass and velocity dispersion. The progenitors of these black...

Gaia is a perfect halo explorer. It makes up for a relatively shallow depth with an array of features not available to other surveys/telescopes. These include stable photometry, impeccable star/galaxy separation and resilience to artefacts, not to...

Although it is a crucial pat of our cosmic timeline, Cosmic Dawn—when the first stars and galaxies formed and systematically reionized the intergalactic medium—remains relatively unexplored. By tracing the distribution and state of neutral hydrogen...