Publications

You can find my papers in this ADS library or on ArXiv.

Dissertation

Here is a link to my thesis, “Simulating and Imaging Supermassive Black Hole Accretion Flows”.

EHT Collaboration Papers

• The Event Horizon Telescope Collaboration et al.
  “First Sagittarius A* Event Horizon Telescope Results. I–VI”. ApJL 875, 2019, 2021.
  ApJL (open access)

• The Event Horizon Telescope Collaboration et al.
  “First M87 Event Horizon Telescope Results. I–VIII”. ApJL 875, 2019,2021.
  ApJL (open access)

First Author and Primary Collaboration Papers

• A Chael, A Lupsasca, GN Wong, E Quataert.
  “Black Hole Polarimetry I: A Signature of Electromagnetic Energy Extraction”. Accepted to ApJ.
  arXiv

• A Chael, S Issaoun, D Pesce, M Johnson, A Ricarte, C Fromm, Y Mizuno.
  “Multifrequency imaging for the next-generation Event Horizon Telescope”. ApJ 945, 2023. ApJ | arXiv

• The Event Horizon Telescope Collaboration et al. (paper writing team).
  “First Sagittarius A* Event Horizon Telescope Results III: imaging of the Galactic Center supermassive black hole”. ApJL 930, 2022.
  ApJL

• A Chael, M Johnson, A Lupsasca.
  “Observing the inner shadow of a black hole: a direct view of the event horizon”. ApJ 918, 2021.
  MNRAS | arXiv

• The Event Horizon Telescope Collaboration et al. (paper coordinator).
  “First Event Horizon Telescope Results VIII: magnetic field structure near the event horizon”. ApJL 910, 2021.
  ApJL

• The Event Horizon Telescope Collaboration et al. (paper writing team).
  “First Event Horizon Telescope Results VII: polarization of the ring”. ApJL 910, 2021.
  ApJL

• A Chael, R Narayan, M Johnson.
  “Two-temperature, Magnetically Arrested Disc simulations of the supermassive black hole in M87”. MNRAS 486, 2019.
  MNRAS | arXiv

• The Event Horizon Telescope Collaboration et al. (paper writing team).
  “First Event Horizon Telescope Results IV: imaging the central supermassive black hole”. ApJL 875, 2019.
  ApJL

• A Chael, M Rowan, R Narayan, MD Johnson, L Sironi.
  “The role of electron heating physics in images and variability of the Galactic Center black hole Sagittarius A*’’. MNRAS 478, 2018.
  MNRAS | arXiv

• A Chael, MD Johnson, KL Bouman, L Blackburn, K Akiyama, R Narayan.
  “Interferometric imaging directly with closure phases and closure amplitudes”. ApJ 857, 2018.
  ApJ | arXiv

• A Chael, R Narayan, A Sadowski.
  “Evolving non-thermal electrons in simulations of black hole accretion”. MNRAS 470, 2017.
  MNRAS | arXiv

• A Chael, MD Johnson, R Narayan, SS Doeleman, J Wardle, KL Bouman.
  “High-resolution linear polarimetric imaging for the Event Horizon Telescope”. ApJ 829, 2016.
  ApJ | arXiv

Other Selected Papers

• DCM Palumbo, GN Wong, A Chael, MD Johnson.
  “Demonstrating photon ring existence with single-baseline polarimetry”. ApJL 952, 2023.
  ApJL | arXiV

• MD Johnson et al.
  “Key science goals for the next-generation Event Horizon Telescope”. Galaxies 11, 2023.
  Galaxies

• S Issaoun et al.
  “Enabling transformational ngEHT science via the inclusion of 86 GHz capabilities”. Galaxies 11, 2023.
  Galaxies

• S Issaoun et al.
  “Resolving the inner parsec of the blazar J1924-2914 with the Event Horizon Telescope.” ApJ 934, 2022.
  ApJ | arXiv

• A Levis, P Srinivasan, A Chael, R Ng, KL Bouman.
  “Gravitationally lensed black hole emission tomography.” IEEE Proceedings of the CVPR, 2022.
  CVF | ArXiv

• R Narayan, A Chael, K Chatterjee, A Ricarte, B Curd.
  “Jets in magnetically arrested accretion flows: geometry, power and black hole spindown”. ApJ 915, 2021.
  ApJ | ArXiv

• M Janssen et al.
  “Event Horizon Telescope observations of the jet launching and collimation in Centaurus A”. Nature Astronomy 2021.
  Nature Astronomy

• M Wielgus et al.
  “Monitoring the morphology of M87* in 2009-2017 with the Event Horizon Telescope”. ApJ 901, 2020.
  ApJ

• M Johnson et al.
  “Universal interferometric signatures of a black hole’s photon ring”. Science Advances 6, 2020.
  Science Advances

• S Issaoun, MD Johnson, L Blackburn, M Moscibrodzka, A Chael, H Falcke. “VLBI imaging of black holes via second moment regularization”. A&A 629, 2019.
  A&A | arXiv

• S Issaoun et al. “The size, shape, and scattering of Sagittarius A* at 86 GHz: first VLBI with ALMA”. ApJ 871, 2019.
  ApJ | arXiv

• W Lu, C Dvorkin, A Chael. “Probing sub-GeV dark matter-baryon scattering with cosmological observables”. Phys. Rev. D 97, 2018.
  Phys. Rev. D | arXiv

• KL Bouman, MD Johnson, A Dalca, A Chael, F Roelofs, SS Doeleman, W Freeman. “Reconstructing video from interferometric measurements of time-varying sources”. IEEE Transactions on Computational Imaging, 2018.
  IEEE | arXiv

• MD Johnson, KL Bouman, L Blackburn, A Chael, J Rosen, H Shiokawa, F Roelofs, K Akiyama, V Fish, SS Doeleman. “Dynamical imaging with interferometry”. ApJ 850, 2018.
  ApJ | arXiv

• A Sadowski, M Wielgus, R Narayan, D Abarca, J McKinney, A Chael. “Radiative, two-temperature simulations of low-luminosity black hole accretion flows in general relativity”. MNRAS 466, 2018.
  MNRAS | arXiv

• K Akiyama, K Kuramochi, S Ikeda, V Fish, F Tazaki, M Honma, SS Doeleman, A Broderick, J Dexter, M Moscibrodzka, KL Bouman, A Chael, A Zaizen. “Imaging the Schwarzschild-radius-scale structure of M87 with the Event Horizon Telescope using sparse modeling”. ApJ 838, 2017.
  ApJ | arXiv

• G Ortiz-Leon et al.
  “The intrinsic shape of Sagittarius A* at 3.5-mm wavelength”. ApJ 824, 2016.
  ApJ | arXiv

• V Fish et al. “Persistent asymmetric structure of Sagittarius A* on event horizon scales”. ApJ 820, 2016.
  ApJ | arXiv

• MD Johnson et al.
  “Resolved magnetic field structure and variability near the event horizon of Sagittarius A*”. Science 350, 2015.
  Science | arXiv

• MD Johnson, A Loeb, H Shiokawa, A Chael, SS Doeleman. “Measuring the direction and angular velocity of a black hole accretion disk via lagged interferometric covariance”. ApJ 813, 2015.
  ApJ | arXiv

• P Verbiest, J Weisberg, A Chael, K Lee, D Lorimer. “On pulsar distance measures and their uncertainties”. ApJ 775, 2012.
  ApJ | arXiv