Astrophysics

We will present SLOW, the simulated cosmic volume (500 Mpc/h) that features the most extensive collection of Local Universe Galaxy Clusters ever replicated, accurately set within the appropriate large-scale framework. We will show current...

Abstract: The gravitational perturbations of a rotating Kerr black hole are notoriously complicated, even at the linear level. In 1973, Teukolsky showed that their physical degrees of freedom are encoded in two gauge-invariant Weyl curvature scalars...

Planets and satellites in mean-motion resonance offer a unique opportunity to probe complex effects of planet-disk interaction and tidal dissipation. I will first discuss how the orbit of Hyperion, a small satellite of Saturn, is inextricably...

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...

The habitability potential of planets in the circumstellar habitable zone (CHZ) of M-dwarf stars are of great interest because M-dwarf stars make up 75% of the population of stars in the galaxy, and >40% of M-dwarfs stars are expected to harbor exo...

Fast Radio Bursts (FRBs) are the milliseconds-duration radio bursts mainly originating from cosmological distances. The high brightness temperatures (~10^{36} K) implies the intrinsic emission mechanisms must be coherent. Observations show that most...

The LIGO-Virgo-KAGRA detector network has observed over 70 gravitational-wave sources to date, including mergers between black holes, neutron stars, and mixed neutron star-black holes. Focusing on the black hole mergers, I will describe some recent...

The Bahcall Lunch follows the astrophysics colloquium lecture.