Research Seminars @ Illinois

View Full Calendar

Tailored for undergraduate researchers, this calendar is a curated list of research seminars at the University of Illinois. Explore the diverse world of research and expand your knowledge through engaging sessions designed to inspire and enlighten.

To have your events added or removed from this calendar, please contact OUR at ugresearch@illinois.edu

Astrophysics, Gravitation and Cosmology Seminar - Leo Stein (University of Mississippi) "Resolving memory in NR, and importance of BMS frames for modeling"

Event Type: Seminar/Symposium
Sponsor: Department of Physics
Location: Loomis 464
Virtual
Date: Dec 6, 2023 12:00 pm
Speaker: Leo Stein
Contact: Deanna Frye
E-Mail: ddebord@illinois.edu
Views: 103
Originating Calendar: Physics - Astrophysics, Relativity, and Cosmology Seminar; Numerical relativity waveforms serve as ground truth for detection and parameter estimation of binary black hole mergers. Most NR waveforms to date were extracted with an approximation that misses memory effects. I will report on the SXS collaboration's capacity to resolve memory effects in production NR simulations using Cauchy-characteristic evolution (CCE). I will further report on how BH perturbation and post-Newtonian theory furnish natural "BMS frames". With these BMS frames, we can perform precision ringdown modeling, extract well-defined remnant quantities, and build complete surrogate waveform models that capture memory effects.

link for robots only