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Stochastic Optics: A Scattering Mitigation Framework for Radio Interferometric Imaging
Michael D. Johnson
Just as turbulence in the Earth's atmosphere can severely limit the angular resolution of optical telescopes, turbulence in the ionized interstellar medium fundamentally limits the…
Observing---and Imaging---Active Galactic Nuclei with the Event Horizon Telescope
Vincent L. Fish, Kazunori Akiyama, Katherine L. Bouman +7
Originally developed to image the shadow region of the central black hole in Sagittarius A* and in the nearby galaxy M87, the Event Horizon Telescope (EHT) provides deep, very high…
The Optics of Refractive Substructure
Michael D. Johnson, Ramesh Narayan
Newly recognized effects of refractive scattering in the ionized interstellar medium have broad implications for very long baseline interferometry (VLBI) at extreme angular resolut…
High Resolution Linear Polarimetric Imaging for the Event Horizon Telescope
Andrew A. Chael, Michael D. Johnson, Ramesh Narayan +3
Images of the linear polarization of synchrotron radiation around Active Galactic Nuclei (AGN) identify their projected magnetic field lines and provide key data for understanding…