Astrophysics

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

At the center of nearly every galaxy in the Universe resides a supermassive black hole. When galaxies collide, their supermassive black holes sink to the center of the newly forming galaxy. There in this nascent galactic nucleus a supermassive black...

Abstract: We construct a family of asymptotically flat Cauchy data for the Einstein vacuum equations that contain no trapped surfaces, yet whose future development gives rise to multiple strongly causal independent trapped surfaces. In particular...

Recent results from KiDS-Legacy cosmic shear analyses show that refined modelling of systematic effects can reconcile previously low estimates of the structure growth parameter with Planck CMB predictions. This underscores the importance of accurate...

After ten years of gravitational-wave observations with the LIGO–Virgo–KAGRA interferometers, over 200 signals from merging black hole binaries have been detected, bringing us closer to understanding how these systems form. Addressing this question...

The structure of dark halos carries signatures of their mass, dynamical state, and the nature of dark matter itself. Some of the most constraining signals can be found in the outskirts of galaxy clusters, which have recently become observationally...

Abstract: The structure of dark halos carries signatures of their mass, dynamical state, and the nature of dark matter itself. Some of the most constraining signals can be found in the outskirts of galaxy clusters, which have recently become...