Astrophysics

The Bahcall Lunch follow the astrophysics colloquium lecture. Registration is required by noon the previous Thursday so a meal can be provided.

The recent launch of the XRISM observatory has opened a new era in high-energy astrophysics, providing high-resolution X-ray spectra of various X-ray sources, including the long-awaited spectra of extended X-ray sources like clusters of galaxies...

In astrophysics, we often aim to disentangle independent underlying source distributions from incomplete and noisy observations. Examples include deblending galaxies in a crowded field, disentangling the emissions of dark matter candidates from...

Abstract: With the advent of next-generation multi-messenger observatories, multi-messenger events will offer unprecedented opportunities to address profound questions in black hole physics, heavy element nucleosynthesis, jet dynamics, cosmic...

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: The James Webb Space Telescope was called the "First Light Machine" when it was being studied as a potential NASA mission.  It quickly became obvious that it would be impossible to prove that the "first" galaxy had been seen, but much more...

The formation and evolution of brightest cluster galaxies (BCGs), the most massive galaxies in the universe, is not a well-understood issue in astrophysics.  Are BCGs special compared to other cluster member galaxies?  If so, were they born special...

Spatially resolved polarimetric images of black holes with the Event Horizon Telescope (EHT) favor models with strong magnetic fields, so-called Magnetically Arrested Disks or MAD models.  MADs can produce efficient jets via the Blandford-Znajek (BZ...