Astrophysics

Abstract: Event Horizon Telescope studies prefer Magnetically Arrested Disk (MAD) accretion flows over their more weakly magnetized Standard and Normal Evolution (SANE) counterparts.  These models produce efficient jets via the Blandford-Znajek (BZ)...

Various cosmological parameters such as H0 and S8 measured using Type Ia Supernovae (SNe Ia) have been shown to be in tension with measurements from the early universe. Additionally, the recent DESI analysis made it clear that, depending on the...

In this two-part talk we consider planetary systems on > 50 au and 1 au scales. Far-out, the hunt is on for the protoplanets suspected to carve the gaps imaged in circumstellar disks. How bright these planets are, and what they will grow to become...

The propagation of a radiation mediated shock (RMS) in the ejecta of BNS merger is likely to affect the composition of r-process elements and, potentially, the early kilonova signal. The reason is that the merger ejecta contains a large number of r...

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...

Abstract: Radio pulses from rotating neutron stars provide us with spectacularly accurate measurements of their spin frequencies. Surprisingly, young and middle-aged pulsars frequently exhibit irregular evolution of their spin frequencies, with long...

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...

Galaxies are at the core of nearly all modern astrophysical studies. They serve as essential cosmological probes, tracing the structure of the universe, while also providing the stage on which stars form and black holes grow. Despite their...

By analyzing the gravitational lensing effects of stars and planets in our galaxy, and other massive distant galaxies, microlensing provides unique insights into phenomena that are otherwise difficult to observe. In the era of large surveys like the...