2025-07-24 –, Cathedral Room G24 - If Room
The images of the shadows of M87 and SgrA* have produced an increased interest in the study of electromagnetic signatures around black holes. These images probe the near horizon region of black holes with unprecedented fidelity. I will present an gpu compatible raytracing code that can be used to model the emission from accretion flows around Kerr black holes.
Krang is a Julia package that implements efficient algorithms for
raytracing emission geometries in the Kerr black hole space time. It is GPU compatible and is
specialized for studies of sub-image contributions from gravitationally lensed sources. Such algorithms are of interest for modeling the sources seen by Very Long
Baseline Interferometry (VLBI) observations of Low Luminosity Active Galactic Nuclei (LLAGN)
such as those imaged by the Event Horizon Telescope Collaboration (EHTC).
I am currently a PhD candidate in physics at Harvard University working under Michael Johnson with the local Event Horizon Telescope (EHT) group. I currently research black hole phenomenology. Some topics and techniques I routinely use include strong field gravitational lensing, the phenomenology of exotic black hole space times, Newman-Penrose formalism and Bayesian inference.