| Wednesday, February 7, 2024 |
| Understanding Fluid Processes in Astrophysics & Geophysics via Numerical Simulation | |
| Daniel Lecoanet, Northwestern University | |
 Event Type: Astro Seminar | |
| Time: 9:00 AM - 10:25 AM | |
| Location: 726 Broadway, 940, CCPP Seminar | |
| Abstract: What will the Earth’s atmosphere and oceans look like at the end of the century? What are the fates of the stars and planets observed in unprecedented detail with recent space missions? These questions are more closely related than they may seem. While there are very different physical conditions in each of these systems, their flows are determined by the same Navier–Stokes equations. In this talk, I will describe fluid processes in common across these astrophysical & geophysical systems that contribute to large uncertainties in their evolution. My group aims to understand these processes to develop robust models that can be extrapolated to nature systems. This has motivated the development of the open-source solver Dedalus, which can solve nearly arbitrary user-specified PDEs written in vector and tensor notation. I will also discuss new algorithms we have developed and implemented to solve general PDEs in cylindrical and spherical geometry, as well as open questions in how to accurately approximate PDEs with boundary conditions. Together, this work illustrates the tight connections between physics and numerical analysis, and the benefits to combining efforts in these fields. | |
| HEP/Pheno Journal Club | |
| Event Type: ArXiv Discussion | |
| Time: 12:30 PM - 1:30 PM | |
| Location: 726 Broadway, 940, CCPP Seminar | |
| Daniel Lecoanet | |
| Event Type: GS Pizza Lunch | |
| Time: 12:30 PM - 1:30 PM | |
| Location: 726 Broadway, 902, Lg Conf | |
| The X(3872) oddities and exotic hadrons. | |
| Antonio Davide Polosa, Rome University | |
| Event Type: HEP Seminar | |
| Time: 2:00 PM - 3:15 PM | |
| Location: 726 Broadway, 940, CCPP Seminar | |
| Abstract: The X(3872) is a neutral axial vector particle with charm-anticharm quark content that cannot be classified as a standard meson. It is widely accepted that X(3872) is the first heavy tetraquark ever observed, but how charm and light quarks are distributed in it, is still rather controversial. For some authors the X is a large size shallow bound state of open charm mesons, for others it results from four valence quarks held together by color forces in a compact particle. I will report some arguments on this discussion which benefits from continuous inputs from experimental physics. | |
| The Life and Death of Stars | |
| Marcus DuPont | |
| Event Type: Cosmic Happy Hour | |
| Time: 8:00 PM - 9:30 PM | |
| Location: 197 East 3rd Street (b/w Aves A & B) | |
| Abstract: An introduction to the lifecycle of the stars, the fundamental building blocks of life as we know it. Time: Intro & Talk - 8-9pm; Social - 9-9:30pm Address: 197 E 3rd St, Book Club Bar Cost: $15 (incl. $8 towards a drink) Tickets: https://www.eventbrite.com/e/780741407567?aff=oddtdtcreator | |