Astrophysics

Gravity-only simulations have been crucial for predicting the matter power spectrum, but they assume baryons have little influence on large-scale structure formation—a notion that has been proven incorrect. With upcoming surveys like LSST and the...

Abstract: We use asymptotic symmetry arguments to show that the only physical states in QED scattering theory are maximally entangled states, in which electron (or positron) momenta at timelike infinity are entangled with soft radiation with memory...

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 timing array experiments around the world have reported evidence of a stochastic gravitational wave background (GWB) at nanohertz frequencies. This background is thought to be sourced by a cosmic population of supermassive black hole binaries...

Pulsar timing array (PTA) experiments aim to detect nHz-frequency gravitational waves using high-precision timing of millisecond pulsars. Multiple PTA collaborations have recently reported evidence for a stochastic gravitational wave background...

Machine learning (ML) techniques are revolutionizing our ability to study galaxy evolution and large-scale structure. Convolutional neural networks (CNNs) can now reliably predict galaxies' physical properties, including cold gas content and...

In this talk we will discuss results regarding the gas phase structure and [C II] 158 μm emission in sub-pc resolution simulations of a self-regulated ISM. We explore the metallicity dependence of the relation between [C II] luminosity and star...

Abstract: I will present several results on linear and nonlinear models, relating to the problem of stability/instability of the exterior region (up to and including the event horizon) of extremal Reissner-Nordstrom black hole spacetimes.

We present the first comprehensive classification framework for the architectures of planetary systems based on a complete survey of the confirmed exoplanet population. With nearly 6000 confirmed exoplanets discovered, including more than 300...