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DTSTAMP:20250822T115807Z
LOCATION:Room 5.2A17
DTSTART;TZID=Europe/Stockholm:20250618T140000
DTEND;TZID=Europe/Stockholm:20250618T143000
UID:submissions.pasc-conference.org_PASC25_sess117_msa118@linklings.com
SUMMARY:Ray Tracing Applications in Imaging of Astrophysical Black Holes
DESCRIPTION:Monika Moscibrodzka (Radboud University)\n\nI will discuss ray
  tracing for astrophysics applications, with a focus on black hole imaging
 . Astrophysical black holes, i.e., those which astronomers do observe in a
  near and far Universe, are not always surrounded by vacuum but are often 
 embedded in extremely hot swirl of plasma rotating almost at the speed of 
 light. The physical conditions in such environment are not achievable in o
 ur Earth laboratories hence observations of plasma in a close vicinity of 
 black holes enable studies of plethora of exotic phenomena such as particl
 e acceleration to extreme energies, light bending in strong gravity, or gr
 avitational energy conversion to other forms of energy.  Ray tracing is us
 ed to simulate emission intensity in black hole accretion flows, creating 
 high-resolution synthetic images. Parameter estimation of black holes base
 d on experimental data requires comparison against a large number of these
  synthetic images, which is computationally intensive. By adapting a gener
 al relativistic ray-tracing code for GPU execution, significant speedups a
 re obtained relative to CPU execution. Though high resolution images are n
 ecessary to observe fine features in the system, such as photon rings, fea
 tures in black holes range over a wide range of scale, requiring a multisc
 ale approach to generating images.\n\nDomain: Engineering, Life Sciences, 
 Physics\n\nSession Chair: Elliott Biondo (Oak Ridge National Laboratory)\n
 \n
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