Astrophysics

Extracting information from stochastic fields is a ubiquitous task in science. However, from cosmology to biology, it tends to be done either through a power spectrum analysis, which is often too limited, or the use of convolutional neural networks...

Large galaxy surveys like the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) are changing how we do cosmology – the study of the evolution of our universe. Focusing on probes of Dark Energy, I will discuss some of the new...

Abstract: The mass of the W boson, a mediator of the weak force between elementary particles, is tightly constrained by the symmetries of the standard model of particle physics. The Higgs boson was the last missing component of the model. After...

The Bahcall Lunch follows the astrophysics colloquium lecture. 

Turbulence is a near ubiquitous feature of fluids and plasmas in geospace, the heliosphere and in astrophysics and well as in laboratory plasma and in the terrestrial environment. Turbulence links large scale energy reservoirs with small scale...

Abstract: Most cosmological data analysis today relies on the Friedmann-Lemaitre-Robertson-Walker (FLRW) metric, which provides the basis of the current standard cosmological model. Within this framework, interesting tensions between our...

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: At the center of our Milky Way Galaxy lives a compact massive object called Sagittarius A* (Sgr A*) which is believed to be a black hole. Its mass, as inferred from the orbits of gravitationally bond stars as well as from direct images...