Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Observing---and Imaging---Active Galactic Nuclei with the Event Horizon Telescope

Version 1 : Received: 11 July 2016 / Approved: 12 July 2016 / Online: 12 July 2016 (09:41:39 CEST)

A peer-reviewed article of this Preprint also exists.

Fish, V.L.; Akiyama, K.; Bouman, K.L.; Chael, A.A.; Johnson, M.D.; Doeleman, S.S.; Blackburn, L.; Wardle, J.F.C.; Freeman, W.T.; the Event Horizon Telescope Collaboration. Observing—and Imaging—Active Galactic Nuclei with the Event Horizon Telescope. Galaxies 2016, 4, 54. Fish, V.L.; Akiyama, K.; Bouman, K.L.; Chael, A.A.; Johnson, M.D.; Doeleman, S.S.; Blackburn, L.; Wardle, J.F.C.; Freeman, W.T.; the Event Horizon Telescope Collaboration. Observing—and Imaging—Active Galactic Nuclei with the Event Horizon Telescope. Galaxies 2016, 4, 54.

Abstract

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 angular resolution data on other AGN sources too. The challenges of working with EHT data have spurred the development of new image reconstruction algorithms. This work briefly reviews the status of the EHT and its utility for observing AGN sources, with emphasis on novel imaging techniques that offer the promise of better reconstructions at 1.3 mm and other wavelengths.

Keywords

galaxies: jets---Galaxy: center---techniques: high angular resolution---techniques: image processing---techniques: interferometric

Subject

Physical Sciences, Astronomy and Astrophysics

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