PATOKA: Simulating Electromagnetic Observables of Black Hole Accretion

George N. Wong, Ben S. Prather, Vedant Dhruv, Benjamin R. Ryan, Monika Mościbrodzka, Chi Kwan Chan, Abhishek V. Joshi, Ricardo Yarza, Angelo Ricarte, Hotaka Shiokawa, Joshua C. Dolence, Scott C. Noble, Jonathan C. Mckinney, Charles F. Gammie

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


The Event Horizon Telescope (EHT) has released analyses of reconstructed images of horizon-scale millimeter emission near the supermassive black hole at the center of the M87 galaxy. Parts of the analyses made use of a large library of synthetic black hole images and spectra, which were produced using numerical general relativistic magnetohydrodynamics fluid simulations and polarized ray tracing. In this article, we describe the PATOKA pipeline, which was used to generate the Illinois contribution to the EHT simulation library. We begin by describing the relevant accretion systems and radiative processes. We then describe the details of the three numerical codes we use, iharm, ipole, and igrmonty, paying particular attention to differences between the current generation of the codes and the originally published versions. Finally, we provide a brief overview of simulated data as produced by PATOKA and conclude with a discussion of limitations and future directions.

Original languageEnglish (US)
Article number64
JournalAstrophysical Journal, Supplement Series
Issue number2
StatePublished - Apr 1 2022

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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