Astrophysics

The Bahcall Lunch follows the astrophysics colloquium lecture. 

Asteroseismology uses the natural oscillation modes of stars to study their interiors. The wonderfully precise measurements by NASA's Kepler and TESS missions are ideal data sources for the technique. These space telescopes have been monitoring the...

Abstract:  Although solutions to Teukolsky’s radial equation play a key role in black hole perturbation theory, there are limitations in our understanding that obscure our practical use of e.g. quasi-normal mode overtone solutions. Towards...

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: An underappreciated aspect of quantum mechanics is that large, relatively imperfect systems can show behavior that is as precise and reproducible as anything in nature. The first example was the observation of superconductivity in 1911...

Pardo: Gravitational waves have offered us a whole new way of looking at our Universe. So far, we have seen them in the ~10-100 Hz range, and, most recently, in the nanohertz regime. However, there are parts of the frequency space that are currently...

I will discuss a new method for analyzing the morphology of supernova remnants (SNRs) by using power specula analysis to diagnose the drivers responsible for structure at different angular scales. Using a suite of hydrodynamic models of the Rayleigh...

The James Webb Space Telescope (JWST) is a large, infrared space telescope designed to transform space science by observing targets from within our own Solar System to the first light in the Universe (and basically everything in between). The...