Astrophysics

Data from the Gaia satellite are revolutionizing many fields of astronomy. I will present two discoveries about white dwarfs: one is an extreme cooling anomaly that produces a mysterious branch on the HR diagram, and the other is the existence of...

Core-collapse supernovae (CCSN) are efficient laboratories to explore physics beyond the standard model (SM). In particular, they have been used to put strong constraints on axion and axion like particles, and on many other motivated extensions of...

New technology and a lack of regulation are allowing massive swarms, or "constellations", of low-Earth communications satellites such as SpaceX's Starlinks to be launched at relatively low cost, leading to a dramatic rise in the number of satellites...

Coronal mass ejections (CMEs) and solar flares are arguably the two most energetic phenomena in the solar system. Large gradual solar energetic particle (SEP) events are primarily associated with coronal mass ejections (CME) driven shocks. The...

Abstract: With the advent of gravitational wave astronomy we are now in a perfect position to confront the multitude of beyond-GR theories, typically invoked to connect to quantum gravity paradigms, with observations in the strong-field regime of...

Over the course of several years the Kepler mission continuously collected photometric data from a single patch of the sky, providing a homogenous set of transiting exoplanet detections. This catalog remains the gold standard for transiting...

Abstract: Twist-angle engineering of 2D materials has led to the recent discoveries of novel many-body ground states in moiré systems such as correlated insulators, unconventional superconductivity, strange metals, orbital magnetism and...

Binary neutron star mergers are great multi-messenger sources. These mergers generate gravitational waves (GWs) detectable with ground-based interferometers and can be accompanied by luminous electromagnetic (EM) radiation. The combined detection of...