Resolving the Inner Jet Structure of 1924-292 with the Event Horizon Telescope

We present the first 1.3 mm (230 GHz) very long baseline interferometry model image of an AGN jet using closure phase techniques with a four-element array. The model image of the quasar 1924-292 was obtained with four telescopes at three observatories: the James Clerk Maxwell Telescope (JCMT) on Mauna Kea in Hawaii, the Arizona Radio Observatory’s Submillimeter Telescope (SMT) in Arizona, and 1Massachusetts Institute of Technology, Haystack Observatory, Route 40, Westford, MA 01886, USA 2Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138, USA 3University of California Berkeley, Dept. of Astronomy, Radio Astronomy Laboratory, 601 Campbell Hall, Berkeley, CA 94720-3411, USA 4Arizona Radio Observatory, Steward Observatory, University of Arizona, 933 North Cherry Ave., Tucson, AZ 85721-0065, USA 5James Clerk Maxwell Telescope, Joint Astronomy Centre, 660 North A’ohoku Place, University Park, Hilo, HI 96720, USA 6Institute of Astronomy and Astrophysics, Academia Sinica, P.O. Box 23-141, Taipei 10617, Taiwan 7National Astronomical Observatory of Japan, Osawa 2-21-1, Mitaka, Tokyo 181-8588, Japan 8The Graduate University for Advanced Studies, Osawa 2-21-1, Mitaka, Tokyo, 181-8588, Japan 9Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany 10Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Rd, Shanghai 200030, China 11Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, China 12Netherlands Organization for Scientific Research, Laan van Nieuw Oost-Indie 300, NL2509 AC The Hague, The Netherlands