Astrophysics

The Bahcall Lunch follows the astrophysics colloquium lecture. 

JWST has enabled high-fidelity infrared spectroscopy for a wide range of transiting planets, directly imaged planets, and brown dwarfs.  In the past year, for transiting planets, observers have detected several molecules for the first time in an...

We present a novel combination of the excursion-set approach with the peak theory formalism in Lagrangian space and provide accurate predictions for halo and void statistics over a wide range of scales. The set-up is based on an effective moving...

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...

Accretion-powered X-ray pulsars are neutron stars that accrete matter from a companion star in a binary system, which exhibit fascinating dynamics. The strong magnetic field of the neutron star guides material onto the magnetic poles, which are...

I will present surprising observational results on the 3D geometry of high-redshift star-forming galaxies based on Early Release Science data from the James Webb Space Telescope. Using a differentiable Bayesian model with Hamiltonian Monte Carlo, I...

Tidal disruption events are luminous, transient flares that occur when a star strays past the tidal radius of a supermassive black hole (SMBH) and is torn apart by the SMBH's gravitational field. These transients, predicted in the 70s, are now...