• 2020 Mar 03

# BHI Colloquium

1:30pm to 2:30pm

## Location:

BHI Meeting Room

Mu-Tao Wang (Columbia University)

Title: On an invariant notion of angular momentum at null infinity

Abstract: We extend the earlier work of Chen-Wang-Yau and Keller-Wang-Yau to define total angular momentum of an asymptotically flat null hypersurface. This induces an angular momentum definition at any section of null infinity. We prove that this definition satisfies several invariant properties that include the BMS invariance.

Jose L....

• 2020 Mar 10

# BHI Colloquium

1:30pm to 2:30pm

## Location:

BHI Meeting Room

Katie Bouman (Caltech)

Title: TBD

Abstract: TBD

Chi-kwan Chan (University of Arizona)

Title: TBD

Abstract: TBD