SCHEDULE: NOV 16-22, 2013
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Parallel Computing In High Energy Astrophysics: Combining Microlensing and Black Hole Ray-Tracing
SESSION: Research Poster Reception
EVENT TYPE: Posters, Electronic Posters, and Education Posters
TIME: 5:15PM - 7:00PM
AUTHOR(S):Bin Chen, Xinyu Dai, Eddie Baron, Ronald Kantowski
ROOM:Mile High Pre-Function
ABSTRACT:
Gravitational lensing is an important probe in astrophysics. In particular, quasar microlensing strongly constrains the geometry of the high-energy X-ray emitting regions of active galactic nuclei (AGNs). The X-ray emission of a microlensed quasar is lensed by both the background supermassive black hole powering the AGN and the thousands (to millions) of random stars in the foreground lens galaxy.
Ray-tracing and parallel computing are needed to compute the image of the accretion disk lensed by a Kerr black hole and the microlensing magnification pattern caused by foreground random stars. We present two parallel ray-tracing codes recently developed by our group to study strong lensing of AGN X-ray emission by Kerr black holes and microlensing by foreground lens galaxies, and a numerical scheme to combine microlensing with Kerr black hole lensing.
We discuss the unique constraints on AGN X-ray emission sizes obtained by our computer programs.
Chair/Author Details:
Bin Chen - University of Oklahoma
Xinyu Dai - University of Oklahoma
Eddie Baron - University of Oklahoma
Ronald Kantowski - University of Oklahoma
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