Astrophysics

Abstract: Arising in hidden sector models of dark matter, millicharged particles could be produced copiously at facilities such as the LHC. However, due to their very small energy depositions, large detectors like CMS or ATLAS are blind to such...

Magnetic dynamos are a ubiquitous way of growing, maintaining and structuring magnetic fields across many scales in the Universe. Turbulent, or small-scale dynamos, which power the turbulent components of the magnetic field, provide the reservoir of...

The Bahcall Lunch follows the astrophysics colloquium lecture. Registration is required by 4pm the previous Thursday so a meal can be provided. Email Amanda at cenker@ias.edu with questions.

The possibility that some of the black holes in the universe have a non-stellar origin and that they play a significant role in cosmology - including being some or all of the dark matter - is both timely and intriguing. I will review the status of...

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...