Joint IAS Princeton University Astrophysics Colloquium

Since the revolutionary discovery of gravitational wave (GW) emission from a binary black hole merger in 2015, the remarkable GW detectors LIGO, Virgo and KAGRA have detected at least ninety compact object mergers. These events are transforming...

Quasars at cosmic dawn are powerful probes to the formation and growth of early supermassive black holes in the universe, their connections to high-redshift galaxy and structure formation, and the evolution of the intergalactic medium at the epoch...

Supernovae, tidal disruption events and merging neutron stars can provide a wealth of physical insights from nuclear physics to cosmology; they can teach us about the creation of the elements, the formation of compact objects, accretion processes...

Over a five-year period, the Dark Energy Spectroscopic Instrument (DESI) will spectroscopically classify nearly 40 million galaxies and quasars over 1/3 of the sky and to redshifts z 3.5. The DESI collaboration has completed measurements of the...

The possibility that some of the black holes in the universe have a non-stellar origin and that they play a significant role in cosmology - including being some or all of the dark matter - is both timely and intriguing. I will review the status of...

Stellar streams form as dwarf galaxies and globular clusters tidally disrupt around their host galaxy. To date, more than 100 streams have been detected around our Galaxy. In this talk, I will begin with an overview of how streams form, how they can...

The last decade of ALMA has transformed our view of planet-forming environments in all respects. High resolution images have revealed a diverse array of structured belts of millimeter-sized dust and a variety of distinct molecular compositions both...

Abstract: Planetary systems are shaped as much by destructive processes --- N-body instabilities, catastrophic impacts, and atmospheric loss --- as by accretionary ones. We examine the histories of violence written in: (a) the orbital architectures...

Neutrinos are the second most abundant particle in the known Universe yet they remain mysterious. While they played an important role in the early Universe, today they contribute at most 1-2% of the energy budget and leave only faint signatures. A...