Date: Wednesday 30-Apr-2025
Time: 11:30-12:30 pm
Location: PSC 1136
Speaker: Mark Avara (Georgia Institute of Technology)
Title: A ‘Leave No Trace’ Approach to Simulations of Black Hole Accretion
Abstract: GRMHD simulations of accretion disks provide the bedrock for interpreting many modern observations of black hole accretion, especially direct radio imaging, which relies on large simulations libraries. Unfortunately, even with the most careful choices for initial conditions, simulations can retain an imprint of those biasing choices even at late times. Reconciling this intrinsic bias, which may not well represent actual astrophysical behavior, remains an outstanding and, I will argue, under-addressed theoretical problem. By making new, but not radically different choices in these initial conditions, I will demonstrate accretion disk simulations we have performed that represent a cost-saving approach to reaching long evolution timescales, and which demonstrate significant differences in comparison to the traditional approach. I will explain the fundamentals of our approach, a suite of new simulations of hot accretion flows in full 3D-GRMHD, and how these simulations may shift our interpretation of observations.
Guidelines and format for the CTC Lunch seminars.
Past CTC Lunch seminars.
For other questions, contact the CTC Lunch host: Ankita Bera
SPECIAL ACCOMMODATIONS:
Special accommodations for individuals with disabilities can be made by calling (301) 405-3001. It would be appreciated if we are notified at least one week in advance.
