Astrophysics Seminars

Recent cosmological data hint at a neutrino mass sum below the minimum value physically allowed by neutrino oscillations, with a preference for the opposite of massive neutrinos. Within ΛCDM, Planck CMB, ACT+Planck+SPT CMB lensing and DESI DR2 BAO...

Dark matter is one of the central open problems in fundamental physics. Many well-motivated candidates interact with the Standard Model through portals beyond gravity, yet to date the most robust evidence for dark matter remains purely gravitational...

I will discuss a recent proof-of-concept waveform model (arxiv.org/abs/2511.10522) that augments post-Newtonian quations using ideas from physics-informed neural networks and universal differential equations. I will then discuss ongoing efforts to...

Planets are built from small dust grains embedded in gaseous protoplanetary disks. As such, the associated gas dynamics and dust-gas interactions play key roles in modern theories of planet formation and evolution. In particular, several...

Abstract: Feedback from massive stars shapes the formation and evolution of galaxies, and is essential for reproducing their observed properties. The vast majority of these massive stars are formed in binaries, yet many parameters within binary...

Magnetospheric accretion is a universal process occurring in magnetized astronomical objects, ranging from neutron stars and white dwarfs to young stars (YSOs) and planets. In the context of neutron stars, this process is linked with phenomena such...

Astrophysical jets driven by black holes are thought to undergo kink instabilities due to the large current carried by such jets. Dissipation of magnetic energy through kink instabilities has been suggested to account for the high-energy radiation...

Gravitational microlensing is sensitive to planetary systems that cannot be probed by other techniques, in particular cold, low-mass planets beyond the snow line. Ground-based microlensing surveys have discovered over 250 planets, including roughly...

I will use a real-time general relativistic Black Hole Flight Simulator to show what really happens inside astronomically realistic black holes. The inner horizon of a rotating black hole is the most violent place in the Universe, easily reaching...