Joint IAS Princeton University Astrophysics Colloquium

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...

The observed structure in the universe is a treasure-trove of information but accessing it is complicated by non-linear evolution, bias, and systematics. I will discuss novel approaches to access the abundant fluctuations modes beyond the linear...

NASA's Juno mission to Jupiter launched in 2011 and arrived at Jupiter on July 4, 2016. Juno's scientific objectives include the study of Jupiter's interior, atmosphere and magnetosphere with the goal of understanding Jupiter's origin, formation and...

Accreting black holes are observed in a large variety of systems in astronomy: active galactic nuclei, X-ray binaries, tidal disruption events, gamma-ray bursts. While analytical one-dimensional models have been enormously useful for understanding...

Magnetars produce beautiful fireworks in x-rays and gamma-rays: small, large, and stupendous flares, fast quasi-periodic oscillations (QPOs), as well as transient increases of their luminosities on timescales of months to years. How the release of...

The distribution of planetary companion masses, as well as the integrated surface density of companions over fixed mass ranges provide a wealth of information concerning planet formation processes and subsequent dynamical evolution of planetary...

The first three gravitational-wave detection by the Advanced LIGO team have been attributed to the coalescence of two black holes with masses more than double that of most known stellar black holes. This dichotomy, their nearly equal mass ratios...

Feedback from a central supermassive black hole is an essential component of galaxy evolution models. Without it, those models cannot produce realistic massive galaxies and galaxy clusters. However, the black-hole feedback mechanism remains...