Astrophysics

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

The origins of the millisecond-duration, energetic (>10^39 erg) fast radio bursts (FRBs) at extragalactic distances remain shrouded in mystery. Although FRBs are likely associated with neutron stars, they appear to occur in a remarkable diversity of...

The galaxies are biased tracers of large-scale structure, which usually form around the peaks of the density field. To probe the baryon in less dense regions, we deploy density mapping techniques combining different tracers. In this talk, I will...

Abstract: Be it numerical, formal, or rigorous, the typical setup for the evolution of spacetimes describing, for instance, the merger of two black holes is to make an ad hoc assumption on the initial data to have compactly supported gravitational...

The so-called galaxy--halo connection is a vast topic concerning how galaxies populate their host dark matter halos.  I will present some works we have made under this grand theme, including (1) the detection of assembly bias signal with the help of...