Astrophysics

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...

The Bahcall Lunch follow the astrophysics colloquium lecture. Registration is required by 3pm the previous Friday so a meal can be provided. Please contact Amanda Cenker with questions.

We recently detected an isolated stellar-mass black hole (BH) unambiguously for the first time, and measured its mass, distance and velocity. We used HST to carry out precise astrometry of the source star of the long-duration, high-magnification...

At the Center for Laboratory Astrophysics at the University of Michigan, we specialize in laboratory experiments scaled to be relevant to astrophysics. How do we design laboratory experiments to answer questions about astrophysics? And what do we...