Astrophysics

How did we get here? Are we alone? A fundamental milestone in answering these questions is the origin of Earth, an event that we are just now contextualizing, thanks to the discovery of thousands of exoplanets. Using telescopes, my group is...

Many modern techniques to analyze global planetary signals, from satellite gravity and the geoid, to magnetic fields, to the making of seismological models, heavily rely on a global function basis - the spherical harmonics. When the available data...

This presentation will overview initiatives created to overcome inequity in physics. We will discuss grassroots efforts like Black in Physics, institution-adjacent efforts like Change-Now at Fermilab, and APS-funded efforts like APS-IDEA, and...

The Bahcall Lunch follows the astrophysics colloquium lecture. 

The standard model of cosmology has passed every test over the last twenty years. Yet it remains unsatisfactory, with 95% of the universe being dark components, whose nature we did not understand. Now, there are possible ‘cracks’ in the model, as...

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...

Pulsar halos are extended gamma-ray structures formed by electrons and positrons that have escaped from the central pulsar wind nebulae (PWNe), interacting with photons of the interstellar radiation fields. Pulsar halos serve as unique probes for...

Recent advancements in cosmological observations have provided an unprecedented opportunity to investigate the distribution of baryons relative to the underlying matter. In this talk, I will present pioneering work that uses a photometric survey...