Astrophysics

Abstract: Besides providing a possible explanation to the strong CP problem and dark matter, the QCD axion possesses a rich cosmology. For example, if PQ breaking occurs after inflation, then axion cosmic strings form. Near the QCD phase transition...

The Bahcall Lunch follows the astrophysics colloquium lecture. 

For the last half-century, relativistic outflows accompanying the final collapse of massive stars have predominantly been detected via high-energy emission, as long-duration gamma-ray bursts (GRBs). Yet, it has long been hypothesized that GRBs are...

This week we join with SFIR: Star Formation/ISM Rendezvous. Note the special time and place.

Abstract: We present an extensive study of the effects of neutrino transport in 3-dimensional general relativistic radiation hydrodynamics (GRHD) simulations of binary neutron star (BNS) mergers using our moment-based, energy-integrated  neutrino...

Cosmic ray (CR) feedback significantly influences galaxy evolution by shaping the dynamics of interstellar and intergalactic media. To comprehend the microphysics underlying CR feedback, kinetic numerical simulations are imperative. I employ...

The QCD axion represents a compelling extension to the Standard Model of particle physics, being both a leading dark matter candidate and a potential solution to the Strong CP problem. In this talk, I describe our efforts toward experimental axion...