Lu, Ru-SenFish, Vincent L.Weintroub, JonathanDoeleman, Sheperd S.Bower, Geoffrey C.Freund, RobertFriberg, PerHo, Paul T. P.Honma, MarekiInoue, MakotoKrichbaum, Thomas P.Marrone, Daniel P.Moran, JamesOyama, TomoakiPlambeck, RichardPrimiani, RurikShen, Zhi-QiangTilanus, Remo P. J.Wright, MelvynYoung, Ken H.Ziurys, Lucy M.Zensus, J. Anton2014-03-172012Lu, Ru-Sen, Vincent L. Fish, Jonathan Weintroub, Sheperd S. Doeleman, Geoffrey C. Bower, Robert Freund, Per Friberg, et al. 2012. “Resolving the Inner Jet Structure of 1924-292 with the Event Horizon Telescope.” The Astrophysical Journal 757 (1) (September 20): L14.0004-637Xhttp://nrs.harvard.edu/urn-3:HUL.InstRepos:11913976We present the first 1.3 mm (230 GHz) very long baseline interferometry model image of an active galactic nucleus (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 on Mauna Kea in Hawaii, the Arizona Radio Observatory's Submillimeter Telescope in Arizona, and two telescopes of the Combined Array for Research in Millimeter-wave Astronomy in California in 2009 April. With the greatly improved resolution compared with previous observations and robust closure phase measurement, the inner jet structure of 1924-292 was spatially resolved. The inner jet extends to the northwest along a position angle of -53° at a distance of 0.38 mas from the tentatively identified core, in agreement with the inner jet structure inferred from lower frequencies, and making a position angle difference of ~80° with respect to the centimeter jet. The size of the compact core is 0.15 pc with a brightness temperature of 1.2 × 1011 K. Compared with those measured at lower frequencies, the low brightness temperature may argue in favor of the decelerating jet model or particle-cascade models. The successful measurement of closure phase paves the way for imaging and time resolving Sgr A* and nearby AGNs with the Event Horizon Telescope.en-USgalaxies: active, galaxies: jets, quasars: individual: 1924-292, radio continuum: general, techniques: high angular resolution, techniques: interferometricJournal Article2014-03-13James Moran2014-03-1710.1088/2041-8205/757/1/l14