Astrophysics

Abstract: Historically, the synergy between physics and geometry, from the time of Archimedes and Newton to the era of Einstein, has repeatedly catalyzed breakthroughs in physics and mathematics. In this presentation, we will explore a new narrative...

Deep generative models offer powerful tools for solving astrophysical inference problems by enabling flexible representations of prior knowledge and likelihood functions. 

In the first part of the talk, I will discuss how generative models can be...

Massive neutrinos suppress the growth of cosmic structure on small, non-linear scales, making it crucial to go beyond a traditional power spectrum analysis to tighten constraints on their mass. By jointly analyzing data from multiple surveys and...

The identity of dark matter is one of the biggest outstanding questions in astrophysics today. The smallest galaxies in the universe, dwarf galaxies, are powerful probes of its identity, as they are composed predominantly of dark matter.  However...

Clusters of galaxies are pervaded by plasma which is hot, tenuous, magnetized, and host to a population of relativistic cosmic rays. The cooling time of this gas can be estimated from its observed radiative output, and found to be much shorter than...

The Bahcall Lunch follow the astrophysics colloquium lecture. Registration is required by noon the previous Thursday so a meal can be provided.

The high and dry desert of the Chilean Andes is a magnificent site from which to observe the universe.  The Atacama Cosmology Telescope (ACT) made measurements of the cosmic microwave background (CMB) from there for fifteen years, with a series of...

The fundamental natures of dark energy and dark matter remain two of the biggest mysteries in modern cosmology. We show that a simple coupling between dark energy and dark matter can simultaneously address two distinct hints at new physics coming...