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

Vincent L. Fish; Kazunori Akiyama; Katherine L. Bouman; Andrew A. Chael; Michael D. Johnson; Sheperd S. Doeleman; Lindy Blackburn; John F. C. Wardle; William T. Freeman; the Event Horizon Telescope Collaboration

doi:10.3390/galaxies4040054

Galaxies (Oct 2016)

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

Vincent L. Fish,
Kazunori Akiyama,
Katherine L. Bouman,
Andrew A. Chael,
Michael D. Johnson,
Sheperd S. Doeleman,
Lindy Blackburn,
John F. C. Wardle,
William T. Freeman,
the Event Horizon Telescope Collaboration

Affiliations

Vincent L. Fish: Massachusetts Institute of Technology, Haystack Observatory, Westford, MA 01886, USA
Kazunori Akiyama: Massachusetts Institute of Technology, Haystack Observatory, Westford, MA 01886, USA
Katherine L. Bouman: Massachusetts Institute of Technology, Computer Science and Artificial Intelligence Laboratory, Cambridge, MA 02139, USA
Andrew A. Chael: Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA
Michael D. Johnson: Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA
Sheperd S. Doeleman: Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA
Lindy Blackburn: Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA
John F. C. Wardle: Physics Department, Brandeis University, Waltham, MA 02453, USA
William T. Freeman: Massachusetts Institute of Technology, Computer Science and Artificial Intelligence Laboratory, Cambridge, MA 02139, USA
the Event Horizon Telescope Collaboration: Massachusetts Institute of Technology, Haystack Observatory, Westford, MA 01886, USA

DOI: https://doi.org/10.3390/galaxies4040054
Journal volume & issue: Vol. 4, no. 4
p. 54

Abstract

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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 active galactic nucleus (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.

Published in Galaxies

ISSN: 2075-4434 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Astronomy
Website: http://www.mdpi.com/journal/galaxies

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