Astrophysics

Abstract: In gravity, spacelike separated regions can be dependent on each other due to the constraint equations. I my talk, I will propose a natural definition of subsystem independence in classical gravity.  Next, I show that extremal surfaces...

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...

Accretion-powered X-ray Pulsars (XRPs) are strongly magnetized neutron stars (NSs), that accrete matter from a donor companion star, often exhibiting a cyclotron resonant scattering feature (CRSF) in their X-ray spectra. Accretion onto their...

Circumbinary discs around young stars have been observed to be misaligned to the binary orbital plane. A misaligned circumbinary gas disc evolves towards one of two states: alignment with the binary orbital plane or polar alignment where the disc is...

In this presentation, we will explore how laboratory magnetized plasma can help us uncover key questions of space physics and space exploration, including spacecraft heat shield performance, energetic electron transport during geomagnetic storms...

The Bahcall Lunch follows the astrophysics colloquium lecture. 

JWST has enabled high-fidelity infrared spectroscopy for a wide range of transiting planets, directly imaged planets, and brown dwarfs.  In the past year, for transiting planets, observers have detected several molecules for the first time in an...