Astrophysics

Each week, we hold a relatively informal seminar/discussion series with an emphasis on extra-galactic and large-scale structure astrophysics.

During Galread a leader/visitor presents a recent paper to the discussion group. The PDF of the paper is...

Abstract 1: The Simons Observatory Small Aperture Telescopes (SATs) employ a continuously rotating broadband half-wave plate (HWP) to access the primordial gravitational wave generated B-mode polarization signal at degree scales. I will provide a...

Cosmic ray (CR) protons with energy between 1-300GeV, which dominate the CR population, are believed to be self-confined, i.e. the CRs are scattered by the waves they generate. The end result is that they travel along the magnetic field lines at the...

Current observations in black-hole astronomy could offer new pathways to constrain deviations from General Relativity. This includes tests of black-hole uniqueness, black-hole stability, and corrections at strong curvature.

• The uniqueness...

Abstract: Motivated from the Swampland program and combined with observational data, we argue that our universe enjoys one mesoscopic dimension of micron scale. We explain why the KK excitation of graviton in this extra dimension is a good candidate...