Astrophysics

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

With the advent of JWST, interpreting unprecedented observations of diverse exoplanet atmospheres requires a fundamental understanding of photochemistry, atmospheric dynamics, and aerosol microphysics. In this talk, I will demonstrate how modeling...

Abstract: In this talk, I will survey key geometric and analytic aspects of black hole perturbations, focusing on recent advances in understanding their dynamical stability, with a particular emphasis on the recent proof of the full nonlinear...

Abstract: Numerical simulations of galaxies and the interstellar medium are now reaching resolutions where small-scale physical processes can be resolved directly. This raises a natural question: which pieces of microphysics must be modeled...

Abstract - The presence of light axions in the infrared is a generic feature of many ultraviolet (UV) scenarios, including string theory, with the number of such axions N naturally O(10-100). Even when these axions interact very weakly with the...